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Abortable Thread Pool
The Analytic Hierarchy Process
API Test Automation in .NET
Asynchronous HttpWebRequests, Interface Implementation, and More
Bad Code? FxCop to the Rescue
Basics of .NET Internationalization
Behind the Scenes: Discover the Design Patterns You're Already Using in the .NET Framework
BigInteger, GetFiles, and More
Binary Serialization of DataSets
Building Voice User Interfaces
Can't Commit?: Volatile Resource Managers in .NET Bring Transactions to the Common Type
CLR Inside Out: Base Class Library Performance Tips and Tricks
CLR Inside Out: Ensuring .NET Framework 2.0 Compatibility
CLR Inside Out: Extending System.Diagnostics
CLR Profiler: No Code Can Hide from the Profiling API in the .NET Framework 2.0
Concurrent Affairs: Build a Richer Thread Synchronization Lock
Custom Cultures: Extend Your Code's Global Reach With New Features In The .NET Framework 2.0
Cutting Edge: Collections and Data Binding
Const in C#, Exception Filters, IWin32Window, and More
Creating a Custom Metrics Tool
DataGridView
DataSets vs. Collections
Determining .NET Assembly and Method References
Experimenting with F#
File Copy Progress, Custom Thread Pools
Finalizers, Assembly Names, MethodInfo, and More
Got Directory Services?: New Ways to Manage Active Directory using the .NET Framework 2.0
High Availability: Keep Your Code Running with the Reliability Features of the .NET Framework
How Microsoft Uses Reflection
ICustomTypeDescriptor, Part 2
ICustomTypeDescriptor, Part 1
Iterating NTFS Streams
JIT and Run: Drill Into .NET Framework Internals to See How the CLR Creates Runtime Objects
Lightweight UI Test Automation with .NET
Low-Level UI Test Automation
Make Your Apps Fly with the New Enterprise Performance Tool
Managed Spy: Deliver The Power Of Spy++ To Windows Forms With Our New Tool
Memory Models: Understand the Impact of Low-Lock Techniques in Multithreaded Apps
Microsoft Java Virtual Machine Update
Microsoft .NET Framework Delivers the Platform for an Integrated, Service-Oriented Web, Part 2
Mini Dump Snapshots and the New SOS
Mutant Power: Create A Simple Mutation Testing System With The .NET Framework
NamedGZipStream, Covariance and Contravariance
.NET Internationalization Utilities
.NET Profiling: Write Profilers With Ease Using High-Level Wrapper Classes
No More Hangs: Advanced Techniques To Avoid And Detect Deadlocks In .NET Apps
The Perfect Host: Create and Host Custom Designers with the .NET Framework 2.0
Phoenix Rising
Scheme Is Love
Security Enhancements in the .NET Framework 2.0
Sepia Tone, StringLogicalComparer, and More
Software Testing Paradoxes
Stay Alert: Use Managed Code To Generate A Secure Audit Trail
Stream Decorator, Single-Instance Apps
StringStream, Methods with Timeouts
SUPERASSERT Goes .NET
Tailor Your Application by Building a Custom Forms Designer with .NET
Test Harness Design Patterns
ThreadPoolPriority, and MethodImplAttribute
ThreadPoolWait and HandleLeakTracker
Three Vital FXCop Rules
A Tidal Wave of Change
To Confirm is Useless, to Undo Divine
Touch All the Bases: Give Your .NET App Brains and Brawn with the Intelligence of Neural Networks
Transactions for Memory
Trustworthy Software
Tune in to Channel 9
UDP Delivers: Take Total Control Of Your Networking With .NET and UDP
UI on the Fly: Use the .NET Framework to Generate and Execute Custom Controls at Run Time
Unexpected Errors in Managed Applications
Unhandled Exceptions and Tracing in the .NET Framework 2.0
Using Combinations to Improve Your Software Test Case Generation
Wandering Code: Write Mobile Agents In .NET To Roam And Interact On Your Network
What Makes Good Code Good?
XML Comments, Late-bound COM, and More
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Microsoft Win32 to Microsoft .NET Framework API Map

 

Microsoft .NET Framework and Microsoft Visual Studio User Education Teams
Microsoft Corporation

January 2004

Applies to:
    Microsoft® .NET Framework version 1.0 or 1.1
    Microsoft Visual Studio® .NET
    Microsoft Win32® functions

Summary: This article identifies the Microsoft .NET Framework version 1.0 or 1.1 APIs that provide similar functionality to Microsoft Win32 functions. One or more relevant .NET Framework APIs are shown for each Win32 function listed. The intended audience for this article is experienced Win32 developers who are creating applications or libraries based on the Microsoft .NET Framework, but anyone looking for a managed counterpart for a Win32 function could find this document useful. (85 printed pages)

In this article, the Microsoft® Win32® functions are organized by category. Each Win32 function that is listed belongs to only one category, and each category is presented in its own table. An alphabetical list of the Win32 categories is provided, as well as a hierarchical list. To locate a Win32 function, select the appropriate category from one of the category lists or search the article for the name of the function. If you do not find the Win32 function that you are seeking, it means that no equivalent .NET Framework API exists in the .NET Framework version 1.0 or 1.1 or that the Win32 function and the relevant .NET Framework API were inadvertently omitted from the list.

If you believe that a Win32 function and the relevant .NET Framework API have been omitted from this article, please let us know by using the feedback link. For more information on the APIs listed in this article, see the Platform SDK documentation or the .NET Framework SDK documentation in the MSDN® library.

Alphabetical Win32 Category List

A-C

D-I

J-N

O-R

S-T

U-Z

Hierarchical Win32 Category List

Base Services

Graphics Device Interface

User Interface

Atom Functions

Win32 function Description .NET Framework API
AddAtom Adds a character string to the local atom table. System.String.Intern

Note   String is not exactly an atom.

FindAtom Searches the local atom table for the specified character string. System.String.IsInterned

Note   String is not exactly an atom.

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Bitmap Functions

Win32 function Description .NET Framework API
AlphaBlend Displays a bitmap with transparent or semitransparent pixels. System.Drawing.Graphics.DrawImage
BitBlt Performs a bit-block transfer. System.Drawing.Graphics.DrawImage
CreateBitmap Creates a bitmap. System.Drawing.Bitmap constructor

Note   Creates a DIB, not a DDB.

GetBitmapDimensionEx Gets the dimensions of a bitmap. System.Drawing.Bitmap.Size
GetDIBColorTable Retrieves RGB color values from a DIB section bitmap. System.Drawing.Bitmap.Palette
GetDIBits Copies a bitmap into a buffer. System.Drawing.Bitmap.LockBits
GetPixel Gets the RGB color value of the pixel at a given coordinate. System.Drawing.Bitmap.GetPixel
GradientFill Fills rectangle and triangle structures. System.Drawing.Graphics.FillRectangle(Drawing2D.LinearGradiantBrush, Rectangle)
LoadBitmap Loads a bitmap from a module's executable file. System.Drawing.Bitmap.Bitmap(Type, String)
SetPixel Sets the color for a pixel. System.Drawing.Bitmap.SetPixel
SetPixelV Sets a pixel to the best approximation of a color. System.Drawing.Bitmap.SetPixel(, Graphics.GetNearestColor(Color))
StretchBlt Copies a bitmap and stretches or compresses it. System.Drawing.Graphics.DrawImage

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Brush Functions

Win32 function Description .NET Framework API
CreateBrushIndirect Creates a brush with a specified style, color, and pattern. Any of the following:
System.Drawing.Brushes
System.Drawing.SolidBrush
System.Drawing.TextureBrush
System.Drawing.Drawing2D.HatchBrush
System.Drawing.Drawing2D.LinearGradientBrush
System.Drawing.Drawing2D.PathGradientBrush
CreateHatchBrush Creates a brush with a hatch pattern and color. System.Drawing.Drawing2D.HatchBrush constructor
CreatePatternBrush Creates a brush with a bitmap pattern. System.Drawing.TextureBrush constructor
CreateSolidBrush Creates a brush with a solid color. System.Drawing.SolidBrush constructor
GetSysColorBrush Gets a handle for a brush that corresponds to a color index. System.Drawing.Brushes class

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Button Functions

Win32 function Description .NET Framework API
CheckDlgButton Changes the check state of a button control. System.Windows.Forms.CheckBox.Checked
CheckRadioButton Adds a check mark to a specified radio button in a group and removes a check mark from all other radio buttons in the group. System.Windows.Forms.RadioButton.Checked
IsDlgButtonChecked Determines whether a button control has a check mark next to it or whether a three-state button control is grayed, checked, or neither. System.Windows.Forms.CheckBox.CheckState

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Clipboard Functions

Win32 function Description .NET Framework API
CountClipboardFormats Retrieves the number of different data formats currently on the clipboard. System.Windows.Forms.DataObject.GetFormats
EnumClipboardFormats Enumerates the data formats currently available on the clipboard. System.Windows.Forms.DataObject.GetFormats
GetClipboardData Retrieves data from the clipboard in a specified format. System.Windows.Forms.ClipBoard.GetDataObject
IsClipboardFormatAvailable Determines whether the clipboard contains data in the specified format. System.Windows.Forms.DataObject.GetDataPresent
RegisterClipboardFormat Registers a new clipboard format. System.Windows.Forms.DataFormats.GetFormat
SetClipboardData Places data on the clipboard in a specified clipboard format. System.Windows.Forms.ClipBoard.SetDataObject

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Clipping Functions

Win32 function Description .NET Framework API
ExcludeClipRect Creates a new clipping region that consists of the existing clipping region minus the specified rectangle. System.Drawing.Graphics.ExcludeClip
ExtSelectClipRgn Combines the specified region with the current clipping region using the specified mode. System.Drawing.Graphics.SetClip
GetClipBox Retrieves the dimensions of the tightest bounding rectangle that can be drawn around the current visible area on the device. System.Drawing.Graphics.VisibleClipBounds
GetClipRgn Retrieves a handle identifying the current application-defined clipping region for the specified device context. System.Drawing.Graphics.Clip
IntersectClipRect Creates a new clipping region from the intersection of the current clipping region and the specified rectangle. System.Drawing.Graphics.IntersectClip
OffsetClipRgn Moves the clipping region of a device context by the specified offsets. System.Drawing.Graphics.TranslateClip
PtVisible Determines whether the specified point is within the clipping region of a device context. System.Drawing.Graphics.IsVisible
RectVisible Determines whether any part of the specified rectangle lies within the clipping region of a device context. System.Drawing.Graphics.IsVisible
SelectClipPath Selects the current path as a clipping region for a device context, combining the new region with any existing clipping region by using the specified mode. System.Drawing.Graphics.SetClip
SelectClipRgn Selects a region as the current clipping region for the specified device context. System.Drawing.Graphics.Clip

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Color Functions

Win32 function Description .NET Framework API
CreateHalftonePalette Creates a halftone palette for the specified device context. System.Drawing.Graphics.GetHalftonePalette
CreatePalette Creates a logical palette. System.Drawing.Image.Palette
GetNearestColor Retrieves a color value identifying a color from the system palette that will be displayed when the specified color value is used. System.Drawing.Graphics.GetNearestColor
GetPaletteEntries Retrieves a specified range of palette entries from the given logical palette. System.Drawing.Image.Palette.Entries

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Combo Box Functions

Win32 function Description .NET Framework API
DlgDirListComboBox Replaces the contents of a combo box with the names of specified subdirectories and files. System.Windows.Forms.ComboBox.Items.AddRange(System.IO.Directory.GetFileSystemEntries)
DlgDirSelectComboBoxEx Retrieves the current selection from a combo box filled by using DlgDirListComboBox. System.Windows.Forms.ComboBox.SelectedItem
GetComboBoxInfo Retrieves information about a specified combo box. System.Windows.Forms.ComboBox properties

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Common Dialog Box Functions

Win32 function Description .NET Framework API
ChooseColor Creates a Color dialog box that enables the user to select a color. System.Windows.Forms.ColorDialog constructor

Note   Dialog cannot be modified through a hook.

ChooseFont Creates a Font dialog box that enables the user to choose attributes for a logical font. System.Windows.Forms.FontDialog constructor

Note   Dialog cannot be modified through a hook.

GetFileTitle Retrieves the name of the specified file. System.IO.FileInfo.Name

Note   Does not take user preferences into account.

GetOpenFileName Creates an Open dialog box that lets the user specify the drive, directory, and name of a file or set of files to open. System.Windows.Forms.OpenFileDialog.ShowDialog

Note   Dialog cannot be modified through a hook.

GetSaveFileName Creates a Save dialog box that lets the user specify the drive, directory, and name of a file to save. System.Windows.Forms.SaveFileDialog.ShowDialog

Note   Dialog cannot be modified through a hook.

PageSetupDlg Creates a Page Setup dialog box that enables the user to specify the attributes of a printed page. System.Windows.Forms.PageSetupDialog.ShowDialog

Note   Dialog cannot be modified through a hook.

PrintDlg Displays a Print dialog box. System.Windows.Forms.PrintDialog.ShowDialog

Note   Dialog cannot be modified through a hook.

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Console Functions

Win32 function Description .NET Framework API
GetStdHandle Retrieves a handle for the standard input, standard output, or standard error device. System.Console.OpenStandardIn
System.Console.OpenStandardOut
System.Console.OpenStandardError
ReadConsole Reads character input from the console input buffer and removes it from the buffer. System.Console.Read
SetStdHandle Sets the handle for the standard input, standard output, or standard error device. System.Console.SetIn
System.Console.SetOut
System.Console.SetError
WriteConsole Writes a character string to a console screen buffer beginning at the current cursor location. System.Console.Write

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Coordinate Functions

Win32 function Description .NET Framework API
ClientToScreen Converts the client-area coordinates of a specified point to screen coordinates. System.Windows.Forms.Form.PointToScreen
CombineTransform Concatenates two world-space to page-space transformations. System.Drawing.Drawing2D.Matrix.Multiply
DPtoLP Converts device coordinates into logical coordinates. System.Drawing.Graphics.TransformPoints
GetMapMode Retrieves the current mapping mode. System.Drawing.Graphics.PageUnit
GetWindowExtEx Retrieves the x-extent and y-extent of the window for the specified device context. System.Drawing.Graphics.PageScale
GetWindowOrgEx Retrieves the x-coordinates and y-coordinates of the window origin for the specified device context. System.Drawing.Graphics.Transform.OffsetX
System.Drawing.Graphics.Transform.OffsetY
GetWorldTransform Retrieves the current world-space to page-space transformation. System.Drawing.Graphics.Transform
LPtoDP Converts logical coordinates into device coordinates. System.Drawing.Graphics.TransformPoints
ModifyWorldTransform Changes the world transformation for a device context using the specified mode. System.Drawing.Graphics.Transform
OffsetViewportOrgEx Modifies the viewport origin for a device context using the specified horizontal and vertical offsets. System.Drawing.Graphics.TranslateTransform
OffsetWindowOrgEx Modifies the window origin for a device context using the specified horizontal and vertical offsets. System.Drawing.Graphics.TranslateTransform
ScreenToClient Converts the screen coordinates of a specified point on the screen-to-client coordinates. System.Windows.Forms.Form.PointToClient
SetMapMode Sets the mapping mode of the specified device context. System.Drawing.Graphics.PageUnit
SetWindowExtEx Sets the horizontal and vertical extents of the window for a device context by using the specified values. System.Drawing.Graphics.PageScale
Drawing.Graphics.ScaleTransform
SetWindowOrgEx Specifies which window point maps to the viewport origin (0,0). System.Drawing.Graphics.TranslateTransform
SetWorldTransform Sets a two-dimensional linear transformation between world space and page space for the specified device context. System.Drawing.Graphics.Transform

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Cursor Functions

Win32 function Description .NET Framework API
ClipCursor Confines the cursor to a rectangular area on the screen. System.Windows.Forms.Cursor.Clip
CopyCursor Copies the specified cursor. System.Windows.Forms.Cursor.CopyHandle
CreateCursor Creates a cursor having the specified size, bit patterns, and hot spot. System.Windows.Forms.Cursor constructor
System.Windows.Forms.Cursor.Size
System.Windows.Forms.Cursor.Position
DestroyCursor Destroys a cursor. System.Windows.Forms.Cursor.Dispose
GetClipCursor Retrieves the screen coordinates of the rectangular area to which the cursor is confined. System.Windows.Forms.Cursor.Clip
GetCursor Retrieves a handle to the current cursor. System.Windows.Forms.Cursor.Handle
GetCursorInfo Retrieves information about the global cursor. System.Windows.Forms.Cursor.Position
System.Windows.Forms.SystemInformation.CursorSize
GetCursorPos Retrieves the cursor's position. System.Windows.Forms.Control.MousePosition
System.Windows.Forms.Cursor.Position
LoadCursor Loads a cursor resource from an executable file. System.Windows.Forms.Cursor constructor
LoadCursorFromFile Creates a cursor based on data contained in a file. System.Windows.Forms.Cursor constructor
SetCursor Sets the cursor shape. System.Windows.Forms.Cursor.Current
SetCursorPos Moves the cursor to the specified screen coordinates. System.Windows.Forms.Cursor.Position
ShowCursor Displays or hides the cursor. System.Windows.Forms.Cursor.Show
Windows.Forms.Cursor.Hide

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Debugging Functions

Win32 function Description .NET Framework API
DebugActiveProcess Enables a debugger to attach to an active process and debug it. System.Diagnostics.Debugger.Launch
DebugBreak Causes a breakpoint exception to occur in the current process. System.Diagnostics.Debugger.Break
IsDebuggerPresent Determines whether the calling process is running under the context of a debugger. System.Diagnostics.Debugger.IsAttached
OutputDebugString Sends a string to the debugger for display. System.Diagnostics.Debugger.Log

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Device Context Functions

Win32 function Description .NET Framework API
ChangeDisplaySettings Changes the settings of the default display device to the specified graphics mode. System.Management.ManagementClass("Win32_VideoController")
ChangeDisplaySettingsEx Changes the settings of the specified display device to the specified graphics mode. System.Management.ManagementClass("Win32_VideoController")
DeviceCapabilities Retrieves the capabilities of a printer device driver. System.Drawing.Printing.PageSettings
System.Drawing.Printing.PrinterSettings
EnumDisplayDevices Retrieves information about the display devices in a system. System.Management.ManagementClass("Win32_DesktopMonitor")
EnumDisplaySettings Retrieves information about one of the graphics modes for a display device. System.Management.ManagementClass("CIM_VideoControllerResolution")
GetDC Retrieves a handle to a display device context for the client area of a specified window or for the entire screen. To retrieve a Graphics object, use any of the following:
System.Drawing.Graphics.FromHwnd(Windows.Forms.Control.Handle)
System.Drawing.Printing.PrintPageEventArgs.Graphics
System.Windows.Forms.PaintEventArgs.Graphics

To explicitly retrieve a handle, use the following:
System.Drawing.Graphics.GetHdc

GetDCEx Retrieves a handle to a display device context for the client area of a specified window or for the entire screen. To retrieve a Graphics object, use any of the following:
System.Drawing.Graphics.FromHwnd(Windows.Forms.Control.Handle)
System.Drawing.Printing.PrintPageEventArgs.Graphics
System.Windows.Forms.PaintEventArgs.Graphics

To explicitly retrieve a handle, use the following:
System.Drawing.Graphics.GetHdc

GetDeviceCaps Retrieves device-specific information for the specified device. System.Drawing.Graphics properties
System.Drawing.Printing.PrinterSettings
System.Management
classes
GetLayout Retrieves the layout of a device context. System.Windows.Forms.Control.RightToLeft
GetObject Retrieves information for the specified graphics object. System.Drawing.Bitmap properties
System.Drawing.Brush
properties
System.Drawing.Font
properties
System.Drawing.Pen
properties
GetObjectType Retrieves the type of the specified object. System.Object.GetType
GetStockObject Retrieves a handle to one of the stock pens, brushes, fonts, or palettes. System.Drawing.Brushes
System.Drawing.Pens
ReleaseDC Releases a device context, freeing it for use by other applications. System.Drawing.Graphics.ReleaseHdc
SetLayout Sets the layout for a device context. System.Windows.Forms.Control.RightToLeft = System.Windows.Forms.RightToLeft.Yes

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Dialog Box Functions

Win32 function Description .NET Framework API
CreateDialog Creates a modeless dialog box from a dialog box template resource. System.Windows.Forms.Form constructor
System.Windows.Forms.Form
properties
CreateDialogIndirect Creates a modeless dialog box from a dialog box template in memory. System.Windows.Forms.Form constructor
System.Windows.Forms.Form
properties
DefDlgProc Calls the default dialog box window procedure to provide default processing for any window messages that a dialog box with a private window class does not process. System.Windows.Forms.Form.DefWndProc
DialogBox Creates a modal dialog box from a dialog box template resource. System.Windows.Forms.Form constructor
System.Windows.Forms.Form.ShowDialog
DialogBoxIndirect Creates a modal dialog box from a dialog box template in memory. System.Windows.Forms.Form constructor
System.Windows.Forms.Form.ShowDialog
DialogProc An application-defined callback function used with the CreateDialog and DialogBox families of functions. System.Windows.Forms.Form.WndProc
EndDialog Destroys a modal dialog box. System.Windows.Forms.Form.Close
GetDlgCtrlID Retrieves the identifier of the specified control. System.Windows.Forms.Form.Controls.IndexOf
GetDlgItem Retrieves a handle to a control in the specified dialog box. System.Windows.Forms.Form.Controls.Item
GetDlgItemInt Translates the text of a specified control in a dialog box into an integer value. System.Int32.Parse(Form.Text)
System.UInt32.Parse(Form.Text)
GetDlgItemText Retrieves the title or text associated with a control in a dialog box. System.Windows.Forms.Form.Controls.Item[].Text
GetNextDlgGroupItem Retrieves a handle to the first control in a group of controls that precedes (or follows) the specified control. Iterate through the controls:
System.Windows.Forms.Form.Controls.Item

Remember to determine whether the control is active by referencing the Enabled and Visible properties of the control.

Note   The order that the controls are presented in might not be the same order in which GetNextDlgGroupItem presents the controls.

GetNextDlgTabItem Retrieves a handle to the first control that has the WS_TABSTOP style that precedes (or follows) the specified control. Iterate through the controls:
System.Windows.Forms.Form.Controls.Item

Remember to determine whether the control is active by referencing the Enabled, Visible, and TabStop properties of the control.

Note   The order that the controls are presented in might not be the same order in which GetNextDlgGroupItem presents the controls.

MessageBox Creates, displays, and operates a message box. System.Windows.Forms.MessageBox.Show
MessageBoxEx Creates, displays, and operates a message box. System.Windows.Forms.MessageBox.Show
MessageBoxIndirect Creates, displays, and operates a message box. System.Windows.Forms.MessageBox.Show
SendDlgItemMessage Sends a message to the specified control in a dialog box. System.Windows.Forms.Form.WndProc(System.Windows.Forms.Message)
SetDlgItemInt Sets the text of a control in a dialog box to the string representation of a specified integer value. System.Windows.Forms.Control.Text = System.Int32.ToString
SetDlgItemText Sets the title or text of a control in a dialog box. System.Windows.Forms.Control.Text

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Dynamic-Link Library Functions

Win32 function Description .NET Framework API
GetModuleFileName Retrieves the full path and file name for the file containing the specified module. System.Reflection.Module.FullyQualifiedName
GetModuleHandle Retrieves a module handle for the specified module. System.Runtime.InteropServices.Marshal.GetHINSTANCE
LoadLibrary Maps the specified executable module into the address space of the calling process. Any of the following:
System.Reflection.Assembly.Load
System.Reflection.Assembly.LoadFrom
System.Reflection.Assembly.LoadWithPartialName
LoadLibraryEx Maps the specified executable module into the address space of the calling process. Any of the following:
System.Reflection.Assembly.Load
System.Reflection.Assembly.LoadFrom
System.Reflection.Assembly.LoadWithPartialName

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Error Handling Functions

Win32 function Description .NET Framework API
FatalAppExit Displays a message box and terminates the application when the message box is closed. System.Windows.Forms.MessageBox.Show
System.Diagnostics.Process.Kill
GetLastError Retrieves the calling thread's last-error code value. System.Runtime.InteropServices.Marshall.GetLastWin32Error

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Event Logging Functions

Win32 function Description .NET Framework API
ClearEventLog Clears the specified event log, and optionally saves the current copy of the log file to a backup file. System.Diagnostics.EventLog.Clear
CloseEventLog Closes a read handle to the specified event log. System.Diagnostics.EventLog.Close
DeregisterEventSource Closes a write handle to the specified event log. System.Diagnostics.EventLog.DeleteEventSource
GetNumberOfEventLogRecords Retrieves the number of records in the specified event log. System.Diagnostics.EventLog.Entries.Count
GetOldestEventLogRecord Retrieves the absolute record number of the oldest record in the specified event log. System.Diagnostics.EventLogEntryCollection[0]
System.Diagnostics.EventLogEntry.TimeWritten
NotifyChangeEventLog Enables an application to receive notification when an event is written to the specified event log file. System.Diagnostics.EventLog.EnableRaisingEvents
OpenBackupEventLog Opens a handle to a backup event log. System.Diagnostics.EventLog constructor
OpenEventLog Opens a handle to an event log. System.Diagnostics.EventLog constructor
ReadEventLog Reads a whole number of entries from the specified event log. System.Diagnostics.EventLogEntryCollection.CopyTo
RegisterEventSource Retrieves a registered handle to an event log. System.Diagnostics.EventLog.CreateEventSource
ReportEvent Writes an entry at the end of the specified event log. System.Diagnostics.EventLog.WriteEntry

Alphabetical Win32 Category List
Hierarchical Win32 Category List

File I/O Functions

Win32 function Description .NET Framework API
CopyFile Copies an existing file to a new file. Either of the following:
System.IO.File.Copy
IO.FileInfo.CopyTo
CreateDirectory Creates a new directory. Any of the following:
System.IO.Directory.CreateDirectory
System.IO.Directory.CreateSubdirectory
System.IO.DirectoryInfo.Create
CreateFile Creates or opens a file object. System.IO.File class and System.IO.FileInfo class
DeleteFile Deletes an existing file. Any of the following:
System.IO.Directory.Delete
System.IO.DirectoryInfo.Delete
System.IO.File.Delete
System.IO.FileInfo.Delete
FileIOCompletionRoutine An application-defined callback function used with ReadFileEx and WriteFileEx. User defined.
FindClose Closes the specified search handle. See FindFirstFile and FindNextFile
FindCloseChangeNotification Stops change notification handle monitoring. System.IO.FileSystemWatcher.EnableRaisingEvents
FindFirstChangeNotification Creates a change notification handle. System.IO.FileSystemWatcher class
FindFirstFile Searches a directory for a file whose name matches the specified file name. Any of the following:
System.IO.Directory.Exists
System.IO.Directory.GetDirectories
System.IO.Directory.GetFileSystemEntries
System.IO.Directory.GetFiles
System.IO.DirectoryInfo.Exists
System.IO.DirectoryInfo.GetDirectories
System.IO.DirectoryInfo.GetFileSystemInfos
System.IO.DirectoryInfo.GetFiles
System.IO.File.Exists
System.IO.FileInfo.Exists
FindFirstFileEx Searches a directory for a file whose name and attributes match the specified file name. Same as FindFirstFile
FindNextChangeNotification Requests that the operating system signal a change notification handle the next time it detects an appropriate change. System.IO.FileSystemWatcher class
FindNextFile Continues a file search. Any of the following:
System.IO.Directory.GetDirectories
System.IO.Directory.GetFileSystemEntries
System.IO.Directory.GetFiles
System.IO.DirectoryInfo.GetDirectories
System.IO.DirectoryInfo.GetFileSystemInfos
System.IO.DirectoryInfo.GetFiles
FlushFileBuffers Clears the buffers for the specified file and causes all buffered data to be written to the file. System.IO.FileStream.Flush
GetBinaryType Determines whether a file is executable. System.IO.FileSystemInfo.Extension

Note   Only manipulates strings; does not do a file-system check.

GetCurrentDirectory Retrieves the current directory for the current process. System.IO.Directory.GetCurrentDirectory
GetDriveType Determines whether a disk drive is a removable, fixed, CD-ROM, RAM disk, or network drive. System.Management.ManagementObject("Win32_LogicalDisk.DeviceID=\"C:\"").Get
System.Management.ManagementObject.Properties
System.IO.DriveInfo.DriveType
GetFileAttributes Retrieves attributes for a specified file or directory. Any of the following:
System.IO.Directory.GetAttributes
System.IO.File.GetAttributes
System.IO.FileSystemInfo.Attributes
GetFileAttributesEx Retrieves attributes for a specified file or directory. Any of the following:
System.IO.Directory.GetAttributes
System.IO.File.GetAttributes
System.IO.FileSystemInfo.Attributes
GetFileInformationByHandle Retrieves file information for a specified file. System.IO.FileInfo properties
GetFileSize Retrieves the size of a specified file. Either of the following:
System.IO.FileInfo.Length
System.IO.FileStream.Length
GetFileSizeEx Retrieves the size of a specified file. Either of the following:
System.IO.FileInfo.Length
System.IO.FileStream.Length
GetFullPathName Retrieves the full path and file name of a specified file. Either of the following:
System.IO.FileSystemInfo.FullName
System.IO.Path.GetFullPath
GetTempFileName Creates a name for a temporary file. System.IO.Path.GetTempFileName
GetTempPath Retrieves the path of the directory designated for temporary files. System.IO.Path.GetTempPath
LockFile Locks a region in an open file. System.IO.FileStream.Lock
LockFileEx Locks a region in an open file for shared or exclusive access. System.IO.FileStream.Lock
MoveFile Moves an existing file or a directory. Any of the following:
System.IO.Directory.Move
System.IO.DirectoryInfo.MoveTo
System.IO.File.Move
System.IO.FileInfo.MoveTo
ReadDirectoryChangesW Retrieves information describing the changes occurring within a directory. System.IO.FileSystemWatcher class
ReadFile Reads data from a file, starting at the specified position. Any of the following:
System.IO.FileStream.BeginRead/EndRead
System.IO.FileStream.Read
System.IO.FileStream.ReadByte
ReadFileEx Reads data from a file asynchronously. System.IO.FileStream.BeginRead/EndRead
RemoveDirectory Deletes an existing empty directory. Either of the following:
System.IO.Directory.Delete
System.IO.DirectoryInfo.Delete
SearchPath Searches for the specified file. Any of the following:
System.IO.Directory.Exists
System.IO.Directory.GetDirectories
System.IO.Directory.GetFileSystemEntries
System.IO.Directory.GetFiles
System.IO.DirectoryInfo.Exists
System.IO.DirectoryInfo.GetDirectories
System.IO.DirectoryInfo.GetFileSystemInfos
System.IO.DirectoryInfo.GetFiles
System.IO.File.Exists
System.IO.FileInfo.Exists
SetCurrentDirectory Changes the current directory for the current process. System.IO.Directory.SetCurrentDirectory
SetEndOfFile Moves the end-of-file position for the specified file. System.IO.FileStream.SetLength
SetFileAttributes Sets the attributes for a file. System.IO.File.SetAttributes
SetFilePointer Moves the file pointer of an open file. Either of the following:
System.IO.FileStream.Position
System.IO.FileStream.Seek
SetFilePointerEx Moves the file pointer of an open file. Either of the following:
System.IO.FileStream.Position
System.IO.FileStream.Seek
UnlockFile Unlocks a previously locked region in an open file. System.IO.FileStream.Unlock
UnlockFileEx Unlocks a previously locked region in an open file. System.IO.FileStream.Unlock
WriteFile Writes data to a file. Any of the following:
System.IO.FileStream.BeginWrite
and EndWrite
System.IO.FileStream.Write
System.IO.FileStream.WriteByte
System.IO.BinaryWriter.Write
WriteFileEx Writes data to a file asynchronously. System.IO.FileStream.BeginWrite and EndWrite

Alphabetical Win32 Category List
Hierarchical Win32 Category List

File System Functions

Used with file systems:

Win32 function Description .NET Framework API
GetDiskFreeSpace Retrieves information about the specified disk, including the amount of free space on the disk. System.Management.ManagementObject("Win32_LogicalDisk.DeviceID=\"C:\"").Get
System.Management.ManagementObject.Properties
GetDiskFreeSpaceEx Retrieves information about the specified disk, including the amount of free space on the disk. System.Management.ManagementObject("Win32_LogicalDisk.DeviceID=\"C:\"").Get
System.Management.ManagementObject.Properties
GetLogicalDriveStrings Fills a buffer with strings that specify valid drives in the system. Either of the following:
System.Environment.GetLogicalDrives
System.IO.Directory.GetLogicalDrives

Used with an encrypted file system:

Win32 function Description .NET Framework API
DecryptFile Decrypts an encrypted file or directory. System.Security.Cryptography.CryptoStream.Read
EncryptFile Encrypts a file or directory. System.Security.Cryptography.CryptoStream.Write
FileEncryptionStatus Retrieves the encryption status of the specified file. System.IO.FileSystemInfo.Attributes

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Filled Shape Functions

Win32 function Description .NET Framework API
Chord Draws an area bounded by an ellipse and a line segment. System.Drawing.Graphics.DrawArc
System.Drawing.Graphics.DrawLine
Ellipse Draws an ellipse. System.Drawing.Graphics.DrawEllipse
System.Drawing.Graphics.FillEllipse
FillRect Fills a rectangle using a brush. System.Drawing.Graphics.FillRectangle
InvertRect Inverts the color values of the pixels in a rectangle. System.Windows.Forms.ControlPaint.DrawReversibleFrame
System.Windows.Forms.ControlPaint.DrawReversibleLine
Pie Draws a pie-shaped wedge bounded by an ellipse and two radials. System.Drawing.Graphics.DrawPie
System.Drawing.Graphics.FillPie
Polygon Draws a polygon. System.Drawing.Graphics.DrawPolygon
System.Drawing.Graphics.FillPolygon
Rectangle Draws a rectangle. System.Drawing.Graphics.DrawRectangle
System.Drawing.Graphics.FillRectangle
RoundRect Draws a rectangle with rounded corners. System.Drawing.Drawing2D.GraphicsPath.AddLines
System.Drawing.Pen.LineJoin = System.Drawing.Pen.LineJoin.Round
System.Drawing.Graphics.DrawPath
System.Drawing.Graphics.FillPath

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Font and Text Functions

Win32 function Description .NET Framework API
AddFontMemResourceEx Adds an embedded font to the system font table. System.Drawing.Text.PrivateFontCollection.AddMemoryFont
AddFontResourceEx Adds a private or non-enumerable font to the system font table. System.Drawing.Text.PrivateFontCollection.AddFontFile
CreateFont Creates a logical font. System.Drawing.Font constructor
DrawText Draws formatted text in a rectangle. System.Drawing.Graphics.DrawString
DrawTextEx Draws formatted text in a rectangle. System.Drawing.Graphics.DrawString
EnumFontFamExProc An application-defined callback function used with EnumFontFamiliesEx to process fonts. System.Drawing.Text.InstalledFontCollection.Families
EnumFontFamiliesEx Enumerates all fonts in the system with certain characteristics. System.Drawing.Text.InstalledFontCollection.Families
ExtTextOut Draws a character string. System.Drawing.Graphics.DrawString
GetCharABCWidths Gets the widths of consecutive characters from the TrueType font. Get a Region[] for the characters:
System.Drawing.Graphics.MeasureCharacterRanges;

Determine the width of each Region:
System.Drawing.Rectangle.Round(Region.GetBounds).Width

GetCharABCWidthsFloat Gets the widths of consecutive characters from the current font. Get a Region[] for the characters:
System.Drawing.Graphics.MeasureCharacterRanges;

Determine the width of each Region:
System.Drawing.Region.GetBounds.Width

GetCharWidth32 Gets the widths of consecutive characters from the current font. Get a Region[] for the characters:
System.Drawing.Graphics.MeasureCharacterRanges;

Determine the width of each Region:
System.Drawing.Rectangle.Round(Region.GetBounds).Width

GetCharWidthFloat Gets the fractional widths of consecutive characters from the current font. Get a Region[] for the characters:
System.Drawing.Graphics.MeasureCharacterRanges;

Determine the width of each Region:
System.Drawing.Region.GetBounds.Width

GetOutlineTextMetrics Gets text metrics for TrueType fonts. System.Drawing.Font properties
GetTabbedTextExtent Computes the width and height of a character string, including tabs. System.Drawing.Graphics.MeasureString
GetTextAlign Gets the text-alignment setting for a device context. System.Drawing.StringFormat.Alignment
System.Drawing.StringFormat.LineAlignment
GetTextColor Gets the text color for a device context. System.Drawing.SolidBrush.Color
GetTextExtentPoint32 Computes the width and height of a string of text. System.Drawing.Graphics.MeasureString
GetTextFace Gets the name of the font that is selected into a device context. System.Drawing.Font.Name
GetTextMetrics Fills a buffer with the metrics for a font. System.Drawing.Font properties
RemoveFontMemResourceEx Removes a font whose source was embedded in a document from the system font table. System.Drawing.Text.PrivateFontCollection.Dispose
RemoveFontResourceEx Removes a private or non-enumerable font from the system font table. System.Drawing.Text.PrivateFontCollection.Dispose
SetTextAlign Sets the text-alignment flags for a device context. System.Drawing.StringFormat.Alignment
System.Drawing.StringFormat.LineAlignment
SetTextColor Sets the text color for a device context. Either of the following:
System.Drawing.Brushes
System.Drawing.SolidBrush.SolidBrush(Color)
TabbedTextOut Writes a character string at a location, expanding tabs to specified values. System.Drawing.Graphics.DrawString using System.Drawing.StringFormat.SetTabStops
TextOut Writes a character string at a location. System.Drawing.Graphics.DrawString

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Icon Functions

Win32 function Description .NET Framework API
CopyIcon Copies an icon from another module. System.Drawing.Icon.FromHandle
CreateIcon Creates an icon with a specified size, color, and bit pattern. System.Drawing.Icon constructor
DestroyIcon Destroys an icon. System.Drawing.Icon.Dispose
DrawIcon Draws an icon. System.Drawing.Graphics.DrawIcon
DuplicateIcon Creates a duplicate of a specified icon. System.Drawing.Icon.Clone
LoadIcon Loads an icon from the executable file associated with an application. System.Drawing.Icon constructor

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Input Method Editor Functions

Win32 function Description .NET Framework API
ImmAssociateContext Associates the specified input context with the specified window. Either of the following:
System.Windows.Forms.Control.DefaultImeMode
System.Windows.Forms.Control.ImeMode
ImmAssociateContextEx Changes the association between the input method context and the specified window or its children. Any of the following:
System.Windows.Forms.Control.DefaultImeMode
System.Windows.Forms.Control.ImeMode
System.Windows.Forms.Control.ResetImeMode
ImmDisableIME Disables the Input Method Editor. System.Windows.Forms.Control.ImeMode = System.Windows.Forms.ImeMode.Disable
ImmGetContext Retrieves the input context associated with the specified window. System.Windows.Forms.Control.ImeMode

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Keyboard Accelerator Functions

Win32 function Description .NET Framework API
TranslateAccelerator Processes accelerator keys for menu commands. System.Windows.Forms.MenuItem.Shortcut

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Keyboard Input Functions

Win32 function Description .NET Framework API
ActivateKeyboardLayout Sets the input locale identifier for the calling thread or the current process. System.Windows.Forms.InputLanguage.CurrentInputLanguage
EnableWindow Enables or disables mouse and keyboard input to the specified window or control. System.Windows.Forms.Control.Enabled
GetActiveWindow Retrieves the window handle to the active window attached to the calling thread's message queue. System.Windows.Forms.Form.ActiveForm
GetFocus Retrieves the handle to the window that has the keyboard focus. System.Windows.Forms.Control.Controls[].Focused
GetKeyboardLayout Retrieves the active input locale identifier for the specified thread. System.Windows.Forms.InputLanguage.CurrentInputLanguage
GetKeyboardLayoutList Retrieves the input locale identifiers corresponding to the current set of input locales in the system. System.Windows.Forms.InputLanguage.InstalledInputLanguages
GetKeyboardLayoutName Retrieves the name of the active input locale identifier. System.Windows.Forms.InputLanguage.LayoutName
GetKeyNameText Retrieves a string that represents the name of a key. System.Windows.Forms.KeyEventArgs.KeyCode.ToString
IsWindowEnabled Determines whether the specified window is enabled for mouse and keyboard input. System.Windows.Forms.Form.Enabled
SetActiveWindow Activates a window. System.Windows.Forms.Activate
SetFocus Sets the keyboard focus to the specified window. System.Windows.Forms.Form.Focus
ToAscii Translates the specified virtual-key code and keyboard state to the corresponding character or characters. System.Windows.Forms.KeyPressEventArgs.KeyChar
ToUnicode Translates the specified virtual-key code and keyboard state to the corresponding Unicode character or characters. System.Windows.Forms.KeyPressEventArgs.KeyChar

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Line and Curve Functions

Win32 function Description .NET Framework API
AngleArc Draws a line segment and an arc. System.Drawing.Graphics.DrawLine
System.Drawing.Graphics.DrawArc
Arc Draws an elliptical arc. System.Drawing.Graphics.DrawArc
ArcTo Draws an elliptical arc. System.Drawing.Graphics.DrawArc
LineTo Draws a line from the current position up to, but not including, the specified point. System.Drawing.Graphics.DrawLine
PolyBezier Draws one or more B&x00E9;zier curves. System.Drawing.Graphics.DrawBeziers
Polyline Draws a series of line segments by connecting the points in the specified array. System.Drawing.Graphics.DrawLines

Alphabetical Win32 Category List
Hierarchical Win32 Category List

List Box Functions

Win32 function Description .NET Framework API
DlgDirList Replaces the contents of a list box with the names of the subdirectories and files in a specified directory. System.Windows.Forms.ListBox.Items.AddRange(System.IO.Directory.GetFileSystemEntries)
DlgDirSelectEx Retrieves the current selection from a single-selection list box. System.Windows.Forms.ListBox.SelectedItem
GetListBoxInfo Retrieves information about the specified list box. System.Windows.Forms.ListBox properties

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Memory Management Functions

Memory management functions:

Win32 function Description .NET Framework API
GlobalMemoryStatus Obtains information about the system's current usage of both physical and virtual memory. System.Management.ManagementClass("Win32_OperatingSystem")
System.Management.ManagementClass.GetInstances
System.Management.ManagementObject.Properties
GlobalMemoryStatusEx Obtains information about the system's current usage of both physical and virtual memory. System.Management.ManagementClass("Win32_OperatingSystem")
System.Management.ManagementClass.GetInstances
System.Management.ManagementObject.Properties

Global and local functions:

Win32 function Description .NET Framework API
GlobalAlloc Allocates the specified number of bytes from the heap. System.Runtime.InteropServices.Marshall.AllocHGlobal
GlobalFree Frees the specified global memory object. System.Runtime.InteropServices.Marshall.FreeHGlobal
GlobalReAlloc Changes the size or attributes of a specified global memory object. System.Runtime.InteropServices.Marshall.ReAllocHGlobal
LocalAlloc Allocates the specified number of bytes from the heap. System.Runtime.InteropServices.Marshall.AllocHGlobal
LocalFree Frees the specified local memory object. System.Runtime.InteropServices.Marshall.FreeHGlobal
LocalReAlloc Changes the size or the attributes of a specified local memory object. System.Runtime.InteropServices.Marshall.ReAllocHGlobal

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Menu Functions

Win32 function Descriptions .NET Framework API
AppendMenu Appends an item to various menus and submenus. System.Windows.Forms.Menu.MenuItemCollection.Add
CheckMenuItem Checks or clears a menu item. System.Windows.Forms.MenuItem.Checked
CheckMenuRadioItem Checks a specified menu item and makes it a radio item. System.Windows.Forms.MenuItem.RadioCheck
CreateMenu Creates a menu. Any of the following:
System.Windows.Forms.ContextMenu
constructor
System.Windows.Forms.MainMenu
constructor
System.Windows.Forms.Menu.MenuItemCollection
constructor
CreatePopupMenu Creates a drop-down menu, submenu, or shortcut menu. Either of the following:
System.Windows.Forms.ContextMenu
constructor
System.Windows.Forms.Menu.MenuItemCollection
constructor
DeleteMenu Deletes a menu item. System.Windows.Forms.Menu.MenuItemCollection.Remove
DestroyMenu Deletes a menu. System.Windows.Forms.Menu.Dispose
EnableMenuItem Enables, disables, or grays a menu item. System.Windows.Forms.MenuItem.Enabled
GetMenu Gets a handle to the menu. System.Windows.Forms.Form.Menu.Handle
GetMenuBarInfo Gets information about a menu bar. System.Windows.Forms.Form.Menu
GetMenuCheckMarkDimensions Returns the dimensions of the default check-mark bitmap. System.Windows.Forms.SystemInformation.MenuCheckSize
GetMenuDefaultItem Gets the default menu item on a menu. System.Windows.Forms.MenuItem.DefaultItem
GetMenuInfo Gets information about a menu. System.Windows.Forms.MenuItem properties
GetMenuItemCount Gets the number of items in a menu. System.Windows.Forms.Menu.MenuItemCollection.Count
GetMenuItemID Gets the identifier of a menu item. System.Windows.Forms.MenuItem.MenuID
GetMenuItemInfo Gets information about a menu item. System.Windows.Forms.MenuItem properties
GetMenuItemRect Gets the bounding rectangle for a menu item. System.Windows.Forms.MenuItem.DrawItem
System.Windows.Forms.DrawItemEventArgs.Bounds
GetMenuState Gets the menu flags associated with a menu item. System.Windows.Forms.MenuItem.Break
System.Windows.Forms.MenuItem.BarBreak
System.Windows.Forms.MenuItem.Checked
System.Windows.Forms.MenuItem.Enabled
System.Windows.Forms.MenuItem.OwnerDraw
GetMenuString Copies the text string of a menu item into a buffer. System.Windows.Forms.MenuItem.Text
GetSubMenu Gets a handle to the drop-down menu or submenu activated by a menu item. System.Windows.Forms.Menu.MenuItems[].Handle
InsertMenu Inserts a new menu item into a menu. System.Windows.Forms.Menu.MenuItemCollection.Add
InsertMenuItem Inserts a new menu item in a menu. System.Windows.Forms.Menu.MenuItemCollection.Add
ModifyMenu Changes an existing menu item. System.Windows.Forms.MenuItem.Break
System.Windows.Forms.MenuItem.BarBreak
System.Windows.Forms.MenuItem.Checked
System.Windows.Forms.MenuItem.Enabled
System.Windows.Forms.MenuItem.OwnerDraw
System.Windows.Forms.MenuItem.Text
RemoveMenu Deletes a menu item or detaches a submenu from a menu. System.Windows.Forms.Menu.MenuItemCollection.Remove
SetMenu Assigns a new menu to a window. System.Windows.Forms.Form.Menu
SetMenuDefaultItem Sets the default menu item for a menu. System.Windows.Forms.MenuItem.DefaultItem
SetMenuInfo Sets information for a menu. System.Windows.Forms.MenuItem properties
SetMenuItemBitmaps Associates a bitmap with a menu item. System.Windows.Forms.MenuItem.DrawItem
SetMenuItemInfo Changes information about a menu item. System.Windows.Forms.MenuItem properties
TrackPopupMenu Displays a shortcut menu at a location and tracks item selection on a menu. System.Windows.Forms.ContextMenu.Show

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Message and Message Queue Functions

Win32 function Description .NET Framework API
GetMessagePos Retrieves the position of the cursor for the last message retrieved by GetMessage. Inside an event handler:
System.Windows.Forms.Windows.Forms.Control.MousePosition
PostQuitMessage Indicates to the system that a thread has made a request to terminate (quit). System.Windows.Forms.Application.ExitThread
SendMessage Sends the specified message to a window or windows. Any of the following:
System.Windows.Forms.Control.DefWndProc
System.Windows.Forms.Control.WndProc
System.Windows.Forms.Form.DefWndProc
System.Windows.Forms.Form.WndProc

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Metafile Functions

Win32 function Description .NET Framework API
CopyEnhMetaFile Copies the contents of an enhanced-format metafile to a specified file. System.Drawing.Imaging.Metafile.Save
CreateEnhMetaFile Creates a device context for an enhanced-format metafile. System.Drawing.Imaging.Metafile constructor
DeleteEnhMetaFile Deletes an enhanced-format metafile or an enhanced-format metafile handle. System.Drawing.Imaging.Metafile.Dispose
EnhMetaFileProc An application-defined callback function used with EnumEnhMetaFile. System.Drawing.Graphics.EnumerateMetafileProc
EnumEnhMetaFile Enumerates the records within an enhanced-format metafile. System.Drawing.Graphics.EnumerateMetafile
GdiComment Copies a comment from a buffer into a specified enhanced-format metafile. System.Drawing.Graphics.AddMetafileComment
GetEnhMetaFile Creates a handle that identifies the enhanced-format metafile stored in the specified file. System.Drawing.Imaging.Metafile constructor
GetEnhMetaFileBits Retrieves the contents of the specified enhanced-format metafile and copies it into a buffer. System.Drawing.Imaging.Metafile.Save
GetEnhMetaFileHeader Retrieves the record containing the header for the specified enhanced-format metafile. System.Drawing.Imaging.Metafile.GetMetafileHeader
GetEnhMetaFilePaletteEntries Retrieves optional palette entries from the specified enhanced metafile. System.Drawing.Imaging.Metafile.Palette.Entries
GetWinMetaFileBits Converts the enhanced-format records from a metafile into Windows-format records. System.Drawing.Imaging.Metafile.Save
PlayEnhMetaFile Displays the picture stored in the specified enhanced-format metafile. System.Drawing.Graphics.DrawImage
PlayEnhMetaFileRecord Plays an enhanced-metafile record by executing the graphics device interface functions identified by the record. System.Drawing.Imaging.Metafile.PlayRecord
System.Drawing.Imaging.PlayRecordCallback
SetEnhMetaFileBits Creates a memory-based enhanced-format metafile from the specified data. System.Drawing.Imaging.Metafile.Save
SetWinMetaFileBits Converts a metafile from the older Windows format to the new enhanced format. System.Drawing.Imaging.Metafile.Save

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Mouse Input Functions

Win32 function Description .NET Framework API
GetDoubleClickTime Gets the double-click time for the mouse. System.Windows.Forms.SystemInformation.DoubleClickTime
mouse_event Synthesizes mouse motion and button clicks. System.Windows.Forms.MouseEventArgs
ReleaseCapture Releases the mouse capture and restores mouse input processing. System.Windows.Forms.Control.Capture
SetCapture Sets the mouse capture to a window. System.Windows.Forms.Control.Capture
TrackMouseEvent
–or–
_TrackMouseEvent
Posts messages when a mouse leaves a window or hovers over a window. System.Windows.Forms.Control.OnMouseLeave
System.Windows.Forms.Control.OnMouseHover

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Multiple Display Monitor Functions

Win32 function Description .NET Framework API
GetMonitorInfo Retrieves information about a display monitor. System.Windows.Forms.Screen.Bounds
System.Windows.Forms.Screen.Primary
System.Windows.Forms.Screen.WorkingArea
MonitorFromPoint Retrieves a handle to the display monitor that contains a specified point. System.Windows.Forms.Screen.FromPoint
MonitorFromRect Retrieves a handle to the display monitor that has the largest area of intersection with a specified rectangle. System.Windows.Forms.Screen.FromRectangle
MonitorFromWindow Retrieves a handle to the display monitor that has the largest area of intersection with the bounding rectangle of a specified window. System.Windows.Forms.Screen.FromHandle

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Multiple-Document Interface Functions

Win32 function Description .NET Framework API
CreateMDIWindow Creates a multiple-document interface (MDI) child window. System.Windows.Forms.Form constructor
System.Windows.Forms.Form.AutoScroll
System.Windows.Forms.Form.DesktopBounds
System.Windows.Forms.Form.MdiParent
System.Windows.Forms.Form.WindowState
TranslateMDISysAccel Processes accelerator keystrokes for window menu commands of the MDI child windows associated with the specified MDI client window. Keyboard events for MDI children are automatically translated.

Alphabetical Win32 Category List
Hierarchical Win32 Category List

National Language Functions

Win32 function Description .NET Framework API
ConvertDefaultLocale Converts a default locale value to an actual locale identifier. System.Globalization.CultureInfo.CurrentCulture
System.Globalization.CultureInfo.InstalledUICulture
EnumCalendarInfo Enumerates calendar information for a specified locale. Access the System.Globalization.CultureInfo.DateTimeFormat property to get a System.Globalization.DateTimeFormatInfo object, and then access its properties:
System.Globalization.DateTimeFormatInfo.AbbreviatedDayNames
System.Globalization.DateTimeFormatInfo.AbbreviatedMonthNames
System.Globalization.DateTimeFormatInfo.DayNames
System.Globalization.DateTimeFormatInfo.LongDatePattern
System.Globalization.DateTimeFormatInfo.MonthNames
System.Globalization.DateTimeFormatInfo.ShortDatePattern
EnumCalendarInfoEx Enumerates calendar information for a specified locale. Iterate through the calendars:
System.Globalization.CultureInfo.DateTimeFormat.Calendar = System.Globalization.CultureInfo.OptionalCalendars[i]
EnumCalendarInfoProc An application-defined function used with EnumCalendarInfo. Same as EnumCalendarInfo
EnumCalendarInfoProcEx An application-defined function used with EnumCalendarInfoEx. Same as EnumCalendarInfoEx
EnumCodePagesProc An application-defined function used with EnumSystemCodePages. Same as EnumSystemCodePages
EnumDateFormats Enumerates the long or short date formats that are available for a specified locale. System.DateTime.GetDateTimeFormats(System.Globalization.CultureInfo)
EnumDateFormatsEx Enumerates the long or short date formats that are available for a specified locale, including date formats for any alternate calendars. Iterate through the calendars:
System.Globalization.CultureInfo.DateTimeFormat.Calendar = System.Globalization.CultureInfo.OptionalCalendars[i];
System.DateTime.GetDateTimeFormats(System.Globalization.CultureInfo)
EnumDateFormatsProc An application-defined function used with EnumDateFormats. Same as EnumDateFormats
EnumDateFormatsProcEx An application-defined function used with EnumDateFormatsEx. Same as EnumDateFormatsEx
EnumGeoInfoProc A callback function used with EnumSystemGeoID. Same as EnumSystemGeoID
EnumLocalesProc An application-defined function used with EnumSystemLocales. Same as EnumSystemLocales
EnumSystemCodePages Enumerates the code pages that are either installed on or supported by a system. System.Globalization.CultureInfo.GetCultures(System.Globalization.CultureTypes.AllCultures) returns an array of CultureInfo

The various code page properties of System.Globalization.CultureInfo.TextInfo

EnumSystemGeoID Enumerates all GeoIDs on the system. Retrieve an array of CultureInfo by calling System.Globalization.CultureInfo.GetCultures(System.Globalization.CultureTypes.AllCultures), and then access the following CultureInfo properties:
System.Globalization.CultureInfo.ThreeLetterISOLanguageName
System.Globalization.CultureInfo.ThreeLetterWindowsLanguageName
System.Globalization.CultureInfo.TwoLetterISOLanguageName
EnumSystemLocales Enumerates the locales that are either installed on or supported by a system. System.Globalization.CultureInfo.GetCultures(System.Globalization.CultureTypes.SpecificCultures)
System.Globalization.CultureInfo.GetCultures(System.Globalization.CultureTypes.InstalledWin32Cultures)
EnumTimeFormats Enumerates the time formats that are available for a specified locale. System.DateTime.GetDateTimeFormats
EnumTimeFormatsProc An application-defined function used with EnumTimeFormats. Same as EnumTimeFormats
GetACP Retrieves the current ANSI code-page identifier for the system. System.Globalization.CultureInfo.InstalledUICulture.TextInfo.ANSICodePage
GetCalendarInfo Retrieves information about a calendar. System.Globalization.CultureInfo.DateTimeFormat
GetCurrencyFormat Formats a number string as a currency string for a specified locale. Create a System.Globalization.CultureInfo object using the constructor, specifying either the culture name or identifier (or use the current culture of the application available on System.Threading.Thread.CurrentCulture);
call System.Convert.ToDouble(str) where str is the numeric string you want to format;
and then call System.Double.ToString("C", ci) (or System.Double.ToString("C") to use the current culture), where C is the standard currency format specifier and ci is the CultureInfo object you created

Note    For more information on the variety of formatting options available in the .NET Framework, see System.String.Format.

GetDateFormat Formats a date as a date string for a specified locale. System.DateTime(, CultureInfo(LCID).Calendar).ToString
GetLocaleInfo Retrieves information about a locale. System.Globalization.CultureInfo.DateTimeFormat
System.Globalization.CultureInfo.NumberFormat
System.Globalization.CultureInfo.TextInfo
GetNumberFormat Formats a number string as a number string customized for a specified locale. Create a System.Globalization.CultureInfo object using the constructor, specifying either the culture name or identifier (or use the current culture of the application available on System.Threading.Thread.CurrentCulture);
call System.Convert.ToDouble(str). where str is the numeric string you want to format;
and then call System.Double.ToString("N", ci) (or System.Double.ToString("N") to use the current culture), where N is the standard number format specifier and ci is the CultureInfo object you created

Note    For more information on the variety of formatting options available in the .NET Framework, see System.String.Format.

GetOEMCP Retrieves the current original equipment manufacturer (OEM) code-page identifier for the system. System.Globalization.CultureInfo.InstalledUICulture.TextInfo.OEMCodePage
GetSystemDefaultLangID Retrieves the language identifier of the system locale. System.Globalization.CultureInfo.InstalledUICulture
GetSystemDefaultLCID Retrieves the system default locale identifier. System.Globalization.CultureInfo.InstalledUICulture
GetSystemDefaultUILanguage Retrieves the language identifier for the default language of the system. System.Globalization.CultureInfo.InstalledUICulture
GetThreadLocale Retrieves the current locale for the calling thread. Either of the following:
System.Globalization.CultureInfo.CurrentCulture
System.Threading.Thread.CurrentCulture
GetTimeFormat Formats time as a time string for a specified locale. System.DateTime(, CultureInfo(LCID).Calendar).ToString
GetUserDefaultLangID Retrieves the language identifier of the current user locale. System.Globalization.CultureInfo.CurrentCulture
GetUserDefaultLCID Retrieves the user default–locale identifier. System.Globalization.CultureInfo.CurrentCulture
GetUserDefaultUILanguage Retrieves the language identifier for the current user language. System.Globalization.CultureInfo.CurrentUICulture
GetUserGeoID Gets information about the user's location. System.Globalization.RegionInfo
IsValidCodePage Determines whether a specified code page is valid. Use an array of CultureInfo objects returned by:
System.Globalization.CultureInfo.GetCultures(System.Globalization.CultureTypes.AllCultures)

Compare to the code page properties of System.Globalization.CultureInfo.TextInfo

IsValidLocale Determines whether a specified locale identifier is valid. try{ System.Globalization.CultureInfo(LCID) }
LCMapString Maps one character string to another, performing a specified locale-dependent transformation. System.Globalization.SortKey
SetCalendarInfo Sets an item of locale information for a calendar. System.Globalization.CultureInfo.DateTimeFormat
SetLocaleInfo Sets an item of locale information. System.Globalization.CultureInfo.DateTimeFormat
System.Globalization.CultureInfo.NumberFormat
SetThreadLocale Sets the current locale for the calling thread. System.Threading.Thread.CurrentCulture

Note   Sets langid only.

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Painting and Drawing Functions

Win32 function Description .NET Framework API
BeginPaint Prepares a window for painting. System.Windows.Forms.Form.OnPaint
DrawFrameControl Draws a frame control. System.Window.Forms.ControlPaint
GetBkColor Returns the background color for a device context. System.Windows.Forms.Form.BackColor
GetBkMode Returns the background mix mode for a device context. System.Windows.Forms.Form.GetStyle(ControlStyles.Opaque)
GetUpdateRect Gets the coordinates of the smallest rectangle that encloses the update region of a window. System.Windows.Forms.PaintEventArgs.ClipRectangle
GetWindowDC Gets the device context for a window, including title bar, menus, and scroll bars. Any of the following:
System.Drawing.Graphics.FromHwnd(Windows.Forms.Control.Handle)
System.Windows.Forms.Control.CreateGraphics.GetHdc
System.Windows.Forms.PaintEventArgs.Graphics.GetHdc
GetWindowRgn Gets a copy of the window region of a window. System.Windows.Forms.Control.Region
GrayString Draws gray text at a location. System.Drawing.Graphics.DrawString(, Drawing.Brushes.Gray, )
InvalidateRect Adds a rectangle to the update region of a window. System.Windows.Forms.Control.Invalidate
InvalidateRgn Invalidates the client area within a region. System.Windows.Forms.Control.Invalidate(System.Windows.Forms.Form.ClientRectangle)
RedrawWindow Updates a region in the client area of a window. System.Windows.Forms.Control.Update
SetBkColor Sets the background to a color value. System.Windows.Forms.Form.BackColor
SetBkMode Sets the background mix mode of a device context. System.Windows.Forms.Form.SetStyle(System.Windows.Forms.ControlStyles.Opaque, System.Boolean)
SetWindowRgn Sets the window region of a window. System.Windows.Forms.Control.Region
UpdateWindow Updates the client area of a window. System.Windows.Forms.Control.Update

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Path Functions

Win32 function Description .NET Framework API
CloseFigure Closes an open figure in a path. System.Drawing.Drawing2D.GraphicsPath.CloseFigure
FillPath Closes any open figures in the current path and fills the interior of the path by using the current brush and polygon-filling mode. System.Drawing.Graphics.FillPath
System.Drawing.Drawing2D.GraphicsPath.CloseFigures
FlattenPath Transforms any curves in the path that is selected into the current device context, turning each curve into a sequence of lines. System.Drawing.Drawing2D.GraphicsPath.Flatten
GetMiterLimit Retrieves the miter limit for the specified device context. System.Drawing.Pen.MiterLimit
GetPath Retrieves the coordinates defining the endpoints of lines and the control points of curves found in the path that is selected into the specified device context. System.Drawing.Drawing2D.GraphicsPath.PathData
PathToRegion Creates a region from the path that is selected into the specified device context. System.Drawing.Region.Region(System.Drawing.Drawing2D.GraphicsPath)
SetMiterLimit Sets the limit for the length of miter joins for the specified device context. System.Drawing.Pen.MiterLimit
StrokeAndFillPath Closes any open figures in a path, strokes the outline of the path by using the current pen, and fills its interior by using the current brush. System.Drawing.Graphics.DrawPath
System.Drawing.Graphics.FillPath
System.Drawing.Drawing2D.GraphicsPath.CloseFigures
StrokePath Renders the specified path by using the current pen. System.Drawing.Graphics.DrawPath
WidenPath Redefines the current path as the area that would be painted if the path were stroked using the pen currently selected into the given device context. System.Drawing.Drawing2D.GraphicsPath.Widen

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Pen Functions

Win32 function Description .NET Framework API
CreatePen Creates a logical pen that has the specified style, width, and color. System.Drawing.Pen constructor
ExtCreatePen Creates a logical cosmetic or geometric pen that has the specified style, width, and brush attributes. System.Drawing.Pen constructor

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Performance Monitoring Functions

Win32 function Description .NET Framework API
PdhAddCounter Initializes a counter structure for the specified counter in the specified query. System.Diagnostics.PerformanceCounter constructor
PdhCalculateCounterFromRawValue Computes the current value of a counter using the raw counter data passed in the parameter list. System.Diagnostics.CounterSample.Calculate
PdhCloseLog Closes the specified log file. System.Diagnostics.EventLog.Close
PdhCloseQuery Closes all counters contained in the specified query, closes all handles related to the query, and frees all memory associated with the query. System.Diagnostics.PerformanceCounterCategory.Delete
PdhCollectQueryData Collects the current raw data value for all counters in the specified query and updates the status code of each counter. System.Diagnostics.PerformanceCounterCategory.ReadCategory
PdhEnumObjectItems Returns the available counters and instances provided by the specified object on the specified computer. System.Diagnostics.PerformanceCounterCategory.GetCounters
System.Diagnostics.PerformanceCounterCategory.GetInstanceNames
PdhEnumObjects Returns a list of objects available on the specified computer. System.Diagnostics.PerformanceCounterCategory.GetCategories
PdhFormatFromRawValue Converts one raw performance data value to the specified format or two raw performance data values if the format conversion is time-based. System.Diagnostics.CounterSample.Calculate
PdhGetCounterInfo Retrieves information about a counter, such as data size, counter type, path, and user-supplied data values. System.Diagnostics.PerformanceCounter properties
PdhGetCounterTimeBase Returns the time base of the specified counter. System.Diagnostics.CounterSample.CounterFrequency
PdhGetFormattedCounterValue Returns the current value of a specified counter in the format requested by the caller. System.Diagnostics.PerformanceCounter.NextValue
PdhGetRawCounterArray Returns an array of raw values from the specified counter. System.Diagnostics.PerformanceCounterCategory.ReadCategory
PdhGetRawCounterValue Returns the current raw value of the counter. System.Diagnostics.PerformanceCounter.NextSample

Note   System.Diagnostics.InstanceData holds the raw data.

PdhMakeCounterPath Creates a full counter path using the members specified in the structure passed in the parameter list. All of the following:

System.Diagnostics.PerformanceCounter.MachineName
System.Diagnostics.PerformanceCounter.CategoryName
System.Diagnostics.PerformanceCounter.InstanceName
System.Diagnostics.PerformanceCounter.CounterName

PdhOpenLog Opens the specified log file. System.Diagnotics.EventLog constructor

Note   Must explicitly handle writing to the log file.

PdhOpenQuery Creates and initializes a unique query structure that is used to manage the collection of performance data. System.Diagnostics.PerformanceCounterCategory constructor
PdhValidatePath Validates that the specified counter is present on the computer that is specified in the counter path. Either of the following:
System.Diagnostics.PerformanceCounterCategory.Exists
System.Diagnostics.PerformanceCounterCategory.InstanceExists

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Printing Functions

Functions used to print:

Win32 function Description .NET Framework API
AbortDoc Stops the current print job and erases everything drawn since the last call to StartDoc. System.Drawing.Printing.PrintPageEventArgs.Cancel
DeviceCapabilities Retrieves the capabilities of a printer device driver. System.Drawing.Printing.PrinterSettings.PrinterName
System.Drawing.Printing.PrinterSettings
properties
EndDoc Ends a print job. Either of the following:
System.Drawing.Printing.PrintDocument.OnEndPrint
System.Drawing.Printing.PrintController.OnEndPrint
EndPage Notifies the device that the application has finished writing to a page. System.Drawing.Printing.PrintController.OnEndPage
StartDoc Starts a print job. System.Drawing.Printing.PrintDocument.Print
System.Drawing.Printing.PrintDocument.OnBeginPrint
System.Drawing.Printing.PrintController.OnStartPrint
StartPage Prepares the printer driver to accept data. System.Drawing.Printing.PrintDocument.OnQueryPageSettings
System.Drawing.Printing.PrintController.OnStartPage
System.Drawing.Printing.PrintDocument.OnPrintPage

Functions used to access the print spooler:

Win32 function Description .NET Framework API
DocumentProperties Retrieves or modifies printer initialization information or displays a printer-configuration property sheet for the specified printer. System.Windows.Forms.PageSetupDialog
System.Windows.Forms.PrintDialog
EndPagePrinter Notifies the print spooler that the application is at the end of a page in a print job. System.Drawing.Printing.PrintPageEventArgs.HasMorePages
EnumForms Enumerates the forms supported by the specified printer. System.Drawing.Printing.PrinterSettings.PaperSizes
EnumPrinters Enumerates available printers, print servers, domains, or print providers. System.Drawing.Printing.PrinterSettings.InstalledPrinters
GetDefaultPrinter Retrieves the printer name of the default printer for the current user on the local computer. System.Drawing.Printing.PrinterSettings constructor
System.Drawing.Printing.PrinterSettings.PrinterName
GetForm Retrieves information about a specified form. System.Drawing.Printing.PrinterSettings.PaperSizes[]
GetPrinter Retrieves information about a specified printer. System.Drawing.Printing.PrinterSettings.PrinterName
System.Drawing.Printing.PrinterSettings
properties
PrinterProperties Displays a printer-properties property sheet for the specified printer. System.Windows.Forms.PageSetupDialog
System.Windows.Forms.PrintDialog
SetPrinter Sets the data for a specified printer or sets the state of the specified printer by pausing printing, resuming printing, or clearing all print jobs. System.Drawing.Printing.PrinterSettings.PrinterName
System.Drawing.Printing.PrinterSettings
properties

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Process and Thread Functions

Functions used with processes:

Win32 function Description .NET Framework API
CreateProcess Creates a new process and its primary thread. System.Diagnostics.Process constructor
System.Diagnostics.Process.Start
ExitProcess Ends a process and all its threads. System.Diagnostics.Process.CloseMainWindow
GetCommandLine Retrieves the command-line string for the current process. Either of the following:
System.Environment.CommandLine
System.Diagnostics.ProcessStartInfo.Arguments
GetCurrentProcess Retrieves a pseudo handle for the current process. System.Diagnostics.Process.Handle
GetCurrentProcessId Retrieves the process identifier of the calling process. System.Diagnostics.Process.Id
GetEnvironmentStrings Retrieves the environment block for the current process. System.Diagnostics.ProcessStartInfo.EnvironmentVariables
GetEnvironmentVariable Retrieves the value of the specified variable from the environment block of the calling process. System.Diagnostics.ProcessStartInfo.EnvironmentVariables[]
GetExitCodeProcess Retrieves the termination status of the specified process. System.Diagnostics.Process.ExitCode
GetPriorityClass Retrieves the priority class for the specified process. System.Diagnostics.Process.PriorityClass
GetProcessAffinityMask Retrieves a process affinity mask for the specified process and the system affinity mask for the system. System.Diagnostics.Process.ProcessorAffinity
GetProcessPriorityBoost Retrieves the priority boost control state of the specified process. System.Diagnostics.Process.PriorityBoostEnabled
GetProcessTimes Retrieves timing information for the specified process. System.Diagnostics.Process.ExitTime
System.Diagnostics.Process.PrivilegedProcessorTime
System.Diagnostics.Process.StartTime
System.Diagnostics.Process.TotalProcessorTime
System.Diagnostics.Process.UserProcessorTime
GetProcessWorkingSetSize Retrieves the minimum and maximum working set sizes of the specified process. System.Diagnostics.Process.MinWorkingSet
System.Diagnostics.Process.MaxWorkingSet
GetStartupInfo Retrieves the contents of the STARTUPINFO structure that was specified when the calling process was created. System.Diagnostics.Process.StandardError
System.Diagnostics.Process.StandardInput
System.Diagnostics.Process.StandardOutput
System.Diagnostics.Process.StartInfo.WindowStyle
OpenProcess Opens an existing process object. System.Diagnostics.Process.GetProcessById
SetEnvironmentVariable Sets the value of an environment variable for the current process. System.Diagnostics.ProcessStartInfo.EnvironmentVariables[]
SetPriorityClass Sets the priority class for the specified process. System.Diagnostics.Process.PriorityClass
SetProcessAffinityMask Sets a processor affinity mask for the threads of a specified process. System.Diagnostics.Process.ProcessorAffinity
SetProcessPriorityBoost Disables the ability of the system to temporarily boost the priority of the threads of the specified process. System.Diagnostics.Process.PriorityBoostEnabled
SetProcessWorkingSetSize Sets the minimum and maximum working set sizes for the specified process. System.Diagnostics.Process.MaxWorkingSet
System.Diagnostics.Process.MinWorkingSet
TerminateProcess Terminates the specified process and all of its threads. System.Diagnostics.Process.Kill

Functions used with threads:

Win32 function Description .NET Framework API
CreateThread Creates a thread to execute within the virtual address space of the calling process. System.Threading.Thread constructor
System.Threading.Thread.Start
GetCurrentThread Retrieves a pseudo handle for the current thread. System.Threading.Thread.CurrentThread
GetCurrentThreadId Retrieves the thread identifier of the calling thread. Either of the following:
System.AppDomain.GetCurrentThreadId
System.Diagnostics.ProcessThread.Id
GetThreadPriority Retrieves the priority value for the specified thread. Either of the following:
System.Diagnostics.ProcessThread.PriorityLevel
System.Threading.Thread.Priority
GetThreadPriorityBoost Retrieves the priority boost control state of the specified thread. System.Diagnostics.ProcessThread.PriorityBoostEnabled
GetThreadTimes Retrieves timing information for the specified thread. System.Diagnostics.ProcessThread.PrivilegedProcessorTime
System.Diagnostics.ProcessThread.StartTime
System.Diagnostics.ProcessThread.TotalProcessorTime
System.Diagnostics.ProcessThread.UserProcessorTime
ResumeThread Decrements the suspend count for a thread. System.Threading.Thread.Resume
SetThreadAffinityMask Sets a processor affinity mask for the specified thread. System.Diagnostics.ProcessThread.ProcessorAffinity
SetThreadIdealProcessor Specifies a preferred processor for a thread. System.Diagnostics.ProcessThread.IdealProcessor
SetThreadPriority Sets the priority value for the specified thread. Either of the following:
System.Diagnostics.ProcessThread.PriorityLevel
System.Threading.Thread.Priority
SetThreadPriorityBoost Enables or disables the ability of the system to temporarily boost the priority of a thread. System.Diagnostics.ProcessThread.PriorityBoostEnabled
Sleep Suspends the execution of the current thread for a specified interval. System.Threading.Thread.Sleep
SuspendThread Suspends the specified thread. System.Threading.Thread.Suspend
SwitchToThread Causes the calling thread to yield execution to another thread that is ready to run on the current processor. System.Threading.Thread.Sleep(0)
TerminateThread Terminates a thread. System.Threading.Thread.Abort
ThreadProc An application-defined function that serves as the starting address for a thread. See System.Threading.ThreadStart delegate
TlsAlloc Allocates a thread local storage (TLS) index. System.Threading.Thread.AllocateNamedDataSlot
TlsFree Releases a TLS index. System.Threading.Thread.FreeNamedDataSlot
TlsGetValue Retrieves the value in the calling thread's TLS slot for a specified TLS index. System.Threading.Thread.GetData
TlsSetValue Stores a value in the calling thread's TLS slot for a specified TLS index. System.Threading.Thread.SetData
WaitForInputIdle Waits until the specified process is waiting for user input with no input pending or until the time-out interval has elapsed. System.Diagnostics.Process.WaitForInputIdle

Functions used in thread pooling:

Win32 function Description .NET Framework API
BindIoCompletionCallback Binds the specified file handle to the I/O completion port for the thread pool. System.Threading.ThreadPool.BindHandle
QueueUserWorkItem Queues a work item to a worker thread in the thread pool. System.Threading.ThreadPool.QueueUserWorkItem
System.Threading.ThreadPool.UnsafeQueueUserWorkItem

Alphabetical Win32 Category List
Hierarchical Win32 Category List

PSAPI Functions

Win32 function Description .NET Framework API
EnumProcesses Retrieves the process identifier for each process object in the system. System.Diagnostics.Process.GetProcesses
EnumProcessModules Retrieves a handle for each module in the specified process. System.Diagnostics.Process.Modules
GetModuleBaseName Retrieves the base name for the specified module. System.Diagnostics.ProcessModule.ModuleName
GetModuleFileNameEx Retrieves the fully qualified path for the specified module. Either of the following:
System.Diagnostics.ProcessModule.FileName
System.Reflection.Module.FullyQualifiedName
GetModuleInformation Retrieves information about the specified module. System.Diagnostics.ProcessModule
GetProcessMemoryInfo Retrieves information about the memory usage of the specified process. System.Diagnostics.Process.PagedMemorySize
System.Diagnostics.Process.PeakPagedMemorySize
System.Diagnostics.Process.PeakWorkingSet
System.Diagnostics.Process.WorkingSet

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Rectangle Functions

Win32 function Description .NET Framework API
EqualRect Determines whether the two specified rectangles are equal by comparing the coordinates of their upper-left and lower-right corners. System.Drawing.Rectangle.Equals
InflateRect Increases or decreases the width and height of the specified rectangle. System.Drawing.Rectangle.Inflate
IntersectRect Calculates the intersection of two source rectangles and places the coordinates of the intersection rectangle into the destination rectangle. System.Drawing.Rectangle.Intersect
IsRectEmpty Determines whether the specified rectangle is empty. System.Drawing.Rectangle.IsEmpty
OffsetRect Moves the specified rectangle by the specified offsets. System.Drawing.Rectangle.Offset
PtInRect Determines whether the specified point lies within the specified rectangle. System.Drawing.Rectangle.Contains
SetRect Sets the coordinates of the specified rectangle. System.Drawing.Rectangle.FromLTRB
SetRectEmpty Creates an empty rectangle in which all coordinates are set to zero. System.Drawing.Rectangle.FromLTRB
UnionRect Creates the union of two rectangles. System.Drawing.Rectangle.Union

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Region Functions

Win32 function Description .NET Framework API
CombineRgn Combines two regions and stores the result in a third region. System.Drawing.Region.Clone
System.Drawing.Region.Exclude
System.Drawing.Region.Intersect
System.Drawing.Region.Union
System.Drawing.Region.Xor
CreateEllipticRgn Creates an elliptical region. System.Drawing.Drawing2D.GraphicsPath constructor
System.Drawing.Drawing2D.GraphicsPath.AddEllipse
System.Drawing.Region.Region(System.Drawing.Drawing2D.GraphicsPath)
CreateEllipticRgnIndirect Creates an elliptical region. System.Drawing.Drawing2D.GraphicsPath constructor
System.Drawing.Drawing2D.GraphicsPath.AddEllipse
System.Drawing.Region.Region(System.Drawing.Drawing2D.GraphicsPath)
CreatePolygonRgn Creates a polygonal region. System.Drawing.Drawing2D.GraphicsPath constructor
System.Drawing.Drawing2D.GraphicsPath.AddPolygon
System.Drawing.Region.Region(System.Drawing.Drawing2D.GraphicsPath)
CreatePolyPolygonRgn Creates a region consisting of a series of polygons. System.Drawing.Drawing2D.GraphicsPath constructor
System.Drawing.Drawing2D.GraphicsPath.AddPolygon
System.Drawing.Region.Region(System.Drawing.Drawing2D.GraphicsPath)
CreateRectRgnIndirect Creates a rectangular region. System.Drawing.Region.Region(System.Drawing.Rectangle)
CreateRoundRectRgn Creates a rectangular region with rounded corners. System.Drawing.Drawing2D.GraphicsPath.AddLines
System.Drawing.Pen.LineJoin = System.Drawing.Drawing2D.LineJoin.Round
EqualRgn Checks the two specified regions to determine whether they are identical. System.Drawing.Region.Equals
ExtCreateRegion Creates a region from the specified region and transformation data. System.Drawing.Region.Transform
FillRgn Fills a region by using the specified brush. System.Drawing.Graphics.FillRegion
GetPolyFillMode Retrieves the current polygon fill mode. System.Drawing.Drawing2D.GraphicsPath.FillMode
GetRegionData Fills the specified buffer with data describing a region. System.Drawing.Region.GetRegionData
GetRgnBox Retrieves the bounding rectangle of the specified region. System.Drawing.Region.GetBounds
OffsetRgn Moves a region by the specified offsets. System.Drawing.Region.Translate
PtInRegion Determines whether the specified point is inside the specified region. System.Drawing.Region.IsVisible
RectInRegion Determines whether any part of the specified rectangle is within the boundaries of a region. System.Drawing.Region.IsVisible
SetPolyFillMode Sets the polygon fill mode for functions that fill polygons. System.Drawing.Drawing2D.GraphicsPath.FillMode

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Registry Functions

Win32 function Description .NET Framework API
RegCloseKey Releases a handle to the specified registry key. Microsoft.Win32.RegistryKey.Close
RegConnectRegistry Establishes a connection to a predefined registry handle on another computer. Microsoft.Win32.RegistryKey.OpenRemoteBaseKey
RegCreateKeyEx Creates the specified registry key. Microsoft.Win32.RegistryKey.CreateSubKey
RegDeleteKey Deletes a subkey. Microsoft.Win32.RegistryKey.DeleteSubKeyTree
RegDeleteValue Removes a named value from the specified registry key. Microsoft.Win32.RegistryKey.DeleteValue
RegEnumKeyEx Enumerates subkeys of the specified open registry key. Microsoft.Win32.RegistryKey.GetSubKeyNames
RegEnumValue Enumerates the values for the specified open registry key. Microsoft.Win32.RegistryKey.GetValueNames
Microsoft.Win32.RegistryKey.GetValue
RegFlushKey Writes all the attributes of the specified open registry key into the registry. Microsoft.Win32.RegistryKey.Flush
RegOpenCurrentUser Retrieves a handle to the HKEY_CURRENT_USER key for the user that the current thread is impersonating. Microsoft.Win32.Registry.CurrentUser
RegOpenKeyEx Opens the specified registry key. Microsoft.Win32.RegistryKey.OpenSubKey
RegOpenUserClassesRoot Retrieves a handle to the HKEY_CLASSES_ROOT key for the specified user. Microsoft.Win32.Registry.ClassesRoot
RegQueryInfoKey Retrieves information about the specified registry key. Microsoft.Win32.RegistryKey.SubKeyCount
Microsoft.Win32.RegistryKey.ValueCount
RegQueryValueEx Retrieves the type and data for a specified value name associated with an open registry key. Microsoft.Win32.RegistryKey.GetValue
RegSetValueEx Sets the data and type of a specified value under a registry key. Microsoft.Win32.RegistryKey.SetValue

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Resource Functions

Win32 function Description .NET Framework API
CopyImage Creates a new icon, cursor, or bitmap and copies the attributes of the old one to the new one. System.Drawing.Image.Clone
EnumResNameProc An application-defined callback function used with EnumResourceNames. System.Resources.ResourceReader.GetEnumerator
EnumResourceNames Searches for resources of a specified type and passes the name or the ID to a callback function. System.Resources.ResourceReader.GetEnumerator
LoadImage Loads an icon, cursor, or bitmap. System.Drawing.Bitmap.Bitmap(System.Type, System.String)
System.Drawing.Icon.Icon(System.Type, System.String)
System.Windows.Forms.Cursor.Cursor(System.Type, System.String)
System.Resources.ResourceManager.GetObject
System.Resources.ResourceSet.GetObject

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Rich Edit Control Functions

Win32 Funtion Description .NET Framework API
EditStreamCallback An application-defined callback function used with the EM_STREAMIN and EM_STREAMOUT messages. System.Windows.Forms.RichTextBox.LoadFile
System.Windows.Forms.RichTextBox.RichTextBox.SaveFile

Note   Not a callback function.

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Scroll Bar Functions

Win32 function Description .NET Framework API
EnableScrollBar Enables or disables one or both scroll bar arrows. System.Windows.Forms.ScrollBar.Enabled

Note   Cannot enable/disable built-in scrollbars (auto-scrolling).

GetScrollBarInfo Retrieves information about the specified scroll bar. System.Windows.Forms.ScrollBar.Value
System.Windows.Forms.ScrollEventArgs.Type
GetScrollInfo Retrieves the parameters of a scroll bar. System.Windows.Forms.ScrollBar.Maximum
System.Windows.Forms.ScrollBar.Minimum
System.Windows.Forms.ScrollBar.Value
GetScrollPos Retrieves the current position of the scroll box. System.Windows.Forms.ScrollBar.Value
GetScrollRange Retrieves the current minimum and maximum scroll box positions. System.Windows.Forms.ScrollBar.Minimum
System.Windows.Forms.ScrollBar.Maximum
SetScrollInfo Sets the parameters of a scroll bar. System.Windows.Forms.ScrollBar.Maximum
System.Windows.Forms.ScrollBar.Minimum
System.Windows.Forms.ScrollBar.Value
SetScrollPos Sets the position of the scroll box. System.Windows.Forms.ScrollBar.Value
SetScrollRange Sets the minimum and maximum scroll box position. System.Windows.Forms.ScrollBar.Minimum
System.Windows.Forms.ScrollBar.Maximum
ShowScrollBar Shows or hides the specified scroll bar. Any of the following:
System.Windows.Forms.Form.AutoScroll
System.Windows.Forms.HScrollBar
constructor
System.Windows.Forms.ListBox.HorizontalScrollBar
System.Windows.Forms.ListBox.ScrollAlwaysVisible
System.Windows.Forms.RichTextBox.ScrollBars
System.Windows.Forms.ScrollableControl.HScroll
System.Windows.Forms.ScrollableControl.VScroll
System.Windows.Forms.TextBox.ScrollBars
System.Windows.Forms.VScrollBar
constructor

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Service Functions

Functions implemented by services:

Win32 function Description .NET Framework API
Handler An application-defined callback function used with RegisterServiceCtrlHandler. All of the following:
System.ServiceProcess.ServiceBase.OnContinue
System.ServiceProcess.ServiceBase.OnCustomCommand
ServiceProcess.ServiceBase.OnPause
System.ServiceProcess.ServiceBase.OnShutdown
System.ServiceProcess.ServiceBase.OnStop
HandlerEx An application-defined callback function used with RegisterServiceCtrlHandlerEx. All of the following:
System.ServiceProcess.ServiceBase.OnContinue
System.ServiceProcess.ServiceBase.OnCustomCommand
System.ServiceProcess.ServiceBase.OnPause
System.ServiceProcess.ServiceBase.OnPowerEvent
System.ServiceProcess.ServiceBase.OnShutdown
System.ServiceProcess.ServiceBase.OnStop
ServiceMain An application-defined function that serves as the entry point for a service. System.ServiceProcess.ServiceBase.Run

Functions used by programs that control or configure services:

Win32 function Description .NET Framework API
ChangeServiceConfig Changes the configuration parameters of a service. System.ServiceProcess.ServiceController.DisplayName
CloseServiceHandle Closes the specified handle to a service control manager object or a service object. System.ServiceProcess.ServiceController.Close
ControlService Sends a control code to a service. System.ServiceProcess.ServiceController.Continue
System.ServiceProcess.ServiceController.Pause
System.ServiceProcess.ServiceController.Stop
CreateService Creates a service object and adds it to the specified service control manager database. System.ServiceProcess.ServiceBase.ServiceName
System.ServiceProcess.ServiceInstaller.Install
DeleteService Marks the specified service for deletion from the service control manager database. System.ServiceProcess.ServiceInstaller.Uninstall
EnumDependentServices Retrieves the name and status of each service that depends on the specified service. System.ServiceProcess.ServiceController.DependentServices
EnumServicesStatus Enumerates services in the specified service control manager database. System.ServiceProcess.ServiceController.GetServices
GetServiceDisplayName Retrieves the display name of the specified service. System.ServiceProcess.ServiceController.DisplayName
GetServiceKeyName Retrieves the name of the specified service. System.ServiceProcess.ServiceBase.ServiceName
System.ServiceProcess.ServiceController.ServiceName
OpenService Opens an existing service. System.ServiceProcess.ServiceController constructor
QueryServiceConfig Retrieves the configuration parameters of the specified service. System.ServiceProcess.ServiceController.DisplayName
System.ServiceProcess.ServiceController.ServicesDependedOn
System.ServiceProcess.ServiceController.ServiceName
System.ServiceProcess.ServiceController.ServiceType
QueryServiceStatus Retrieves the current status of the specified service. System.ServiceProcess.ServiceController.Status
StartService Starts a service. System.ServiceProcess.ServiceController.Start

Alphabetical Win32 Category List
Hierarchical Win32 Category List

String Functions

Win32 function Description .NET Framework API
CharLower Converts a character string or a single character to lowercase. System.String.ToLower
CharNext Retrieves a pointer to the next character in a string. System.String.GetEnumerator.MoveNext
CharUpper Converts a character string or a single character to uppercase. System.String.ToUpper
CompareString Compares two character strings, using the specified locale. System.String.Compare
IsCharAlpha Determines whether a character is an alphabetical character. System.Char.IsLetter
IsCharAlphaNumeric Determines whether a character is either an alphabetical or a numeric character. System.Char.IsLetterOrDigit
IsCharLower Determines whether a character is lowercase. System.Char.IsLower
IsCharUpper Determines whether a character is uppercase. System.Char.IsUpper
LoadString Loads a string resource from the executable file associated with a specified module. System.Resources.ResourceManager.GetString
lstrcat Appends one string to another. System.String.Concat

Note   Strings are immutable in the .NET Framework. Methods that appear to modify a string actually return a new string.

lstrcmp Compares two character strings. System.String.Compare
lstrcmpi Compares two character strings. System.String.Compare
lstrcpy Copies a string to a buffer. System.String.ToCharArray
lstrcpyn Copies a specified number of characters from a source string into a buffer. System.String.CopyTo
System.String.ToCharArray
lstrlen Retrieves the length of the specified string (not including the terminating null character). System.String.Length
wsprintf Formats and stores a series of characters and values in a buffer. System.String.Format
wvsprintf Formats and stores a series of characters and values in a buffer. System.String.Format

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Structured Exception-Handling Functions

Win32 function Description .NET Framework API
GetExceptionCode Retrieves a code that identifies the type of exception that occurred. System.Exception.GetType
GetExceptionInformation Retrieves a machine-independent description of an exception and information about the machine state that existed for the thread when the exception occurred. System.Exception class
RaiseException Raises an exception in the calling thread. Throw an instance of a System.Exception

Alphabetical Win32 Category List
Hierarchical Win32 Category List

Synchronization Functions

CriticalSection functions:

Win32 function Description .NET Framework API
EnterCriticalSection Waits for ownership of the specified critical section object. System.Threading.Monitor.Enter
LeaveCriticalSection Releases ownership of the specified critical section object. System.Threading.Monitor.Exit
TryEnterCriticalSection Attempts to enter a critical section without blocking. System.Threading.Monitor.TryEnter

Event functions:

Win32 function Description .NET Framework API
CreateEvent Creates or opens a named or an unnamed event object. Either of the following:
System.Threading.AutoResetEvent
constructor
System.Threading.ManualResetEvent
constructor
ResetEvent Sets the specified event object to the nonsignaled state. Either of the following:
System.Threading.AutoResetEvent.Reset
System.Threading.ManualResetEvent.Reset
SetEvent Sets the specified event object to the signaled state. Either of the following:
System.Threading.AutoResetEvent.Set
System.Threading.ManualResetEvent.Set

Interlocked functions:

Win32 function Description .NET Framework API
InterlockedCompareExchange Performs an atomic comparison of the specified values and exchanges the values, based on the outcome of the comparison. System.Threading.Interlocked.CompareExchange
InterlockedCompareExchangePointer Performs an atomic comparison of the specified values and exchange of the values, based on the outcome of the comparison. System.Threading.Interlocked.CompareExchange
InterlockedDecrement Decrements (decreases by one) the value of the specified variable and checks the resulting value. System.Threading.Interlocked.Decrement
InterlockedExchange Atomically exchanges a pair of values. System.Threading.Interlocked.Exchange
InterlockedIncrement Increments (increases by one) the value of the specified variable and checks the resulting value. System.Threading.Interlocked.Increment

Mutex functions:

Win32 function Description .NET Framework API
CreateMutex Creates or opens a named or an unnamed mutex object. System.Threading.Mutex constructor
OpenMutex Opens an existing named mutex object. System.Threading.Mutex(false, string, name) constructor
ReleaseMutex Releases ownership of the specified mutex object. System.Threading.Mutex.ReleaseMutex

Wait functions:

Win32 function Description .NET Framework API
RegisterWaitForSingleObject Directs a wait thread in the thread pool to wait on the object. System.Threading.ThreadPool.RegisterWaitForSingleObject
System.Threading.ThreadPool.UnsafeRegisterWaitForSingleObject
UnregisterWait Cancels a registered wait operation. System.Threading.RegisteredWaitHandle.Unregister
WaitForMultipleObjects Returns when the specified criteria for the specified objects is met. Either of the following:
System.Threading.WaitHandle.WaitAll
System.Threading.WaitHandle.WaitAny
WaitForSingleObject Returns when the specified criteria for the specified object is met. System.Threading.WaitHandle.WaitOne
WaitOrTimerCallback Returns when the specified criteria is met. See System.Threading.WaitOrTimerCallback delegate

WaitableTimer functions:

Win32 function Description .NET Framework API
CancelWaitableTimer Sets the specified waitable timer to the inactive state. System.Threading.Timer.Change(System.Threading.Timeout.Infinite, System.Threading.Timeout.Infinite)
CreateWaitableTimer Creates or opens a waitable timer object. System.Threading.Timer constructor
SetWaitableTimer Activates the specified waitable timer. System.Threading.Timer constructor
TimerAPCProc Application-defined timer completion routine used with SetWaitableTimer. See System.Threading.TimerCallback delegate

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System Information Functions

Win32 function Description .NET Framework API
ExpandEnvironmentStrings Replaces environment-variable strings with their defined values. System.Environment.ExpandEnvironmentVariables
GetComputerName Retrieves the NetBIOS name of the local computer. System.Environment.MachineName
System.Windows.Forms.SystemInformation.ComputerName
GetCurrentHwProfile Retrieves the current hardware profile for the local computer. Use System.Management and Microsoft.Win32.RegistryKey
GetKeyboardType Retrieves information about the current keyboard. System.Management.ManagementClass("Win32_Keyboard")
System.Management.ManagementClass.GetInstances
System.Management.ManagementObject.Properties
GetNativeSystemInfo Retrieves information about the current system for an application running under WOW64. System.Management.ManagementClass("Win32_Processor")
System.Management.ManagementClass.GetInstances
System.Management.ManagementObject.Properties
GetSysColor Retrieves the current color of a display element. System.Drawing.SystemColors
GetSystemDirectory Retrieves the path of the system directory. System.Environment.SystemDirectory
GetSystemInfo Retrieves information about the current system. System.Management.ManagementClass("Win32_Processor")
System.Management.ManagementClass.GetInstances
System.Management.ManagementObject.Properties
GetSystemMetrics Retrieves system metrics and configuration settings. System.Windows.Forms.SystemInformation properties
GetUserName Retrieves the user name of the current thread. System.Environment.UserName
GetVersion Retrieves the version number of the operating system. System.Environment.OSVersion
GetVersionEx Retrieves the version number of the current operating system. System.Environment.OSVersion
GetWindowsDirectory Retrieves the path of the Windows directory. System.Management.ManagementClass("Win32_OperatingSystem")
System.Management.ManagementClass.GetInstances
System.Management.ManagementObject["WindowsDirectory"].ToString

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Tape Backup Functions

Win32 function Description .NET Framework API
GetTapeParameters Retrieves information that describes the tape or the tape drive. System.Management.ManagementClass("MSTapeMediaCapacity")
System.Management.ManagementClass("Win32_TapeDrive")
System.Management.ManagementClass.GetInstances
System.Management.ManagementObject.Properties

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Text Object Model Functions

Win32 function Description .NET Framework API
ITextDocument Retrieves the active selection and range objects for any story in the document. System.Windows.Forms.RichTextBox
ITextFont Encapsulates the functionality of the Microsoft Word Font dialog box. System.Windows.Forms.RichTextBox
ITextPara Encapsulates the functionality of the Microsoft Word Paragraph dialog box. System.Windows.Forms.RichTextBox
ITextRange Enables an application to select text in a story, and then examine or change that text. System.Windows.Forms.RichTextBox

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Time Functions

Win32 function Description .NET Framework API
GetSystemTime Retrieves the current system date and time in UTC format. System.DateTime.UtcNow
GetTimeFormat Formats a system time as a time string for a specified locale. System.DateTime.ToString
SystemTimeToFileTime Converts a system time to a file time. System.DateTime.ToFileTime
FileTimeToLocalFileTime Converts a UTC file time to a local file time. System.DateTime.ToFileTime
GetLocalTime Retrieves the current local date and time. System.DateTime.Now
GetTimeZoneInformation Retrieves the current time-zone parameters. System.TimeZone.CurrentTimeZone
CompareFileTime Compares two file times. System.DateTime.Compare
FileTimeToLocalFileTime Converts a UTC file time to a local file time. System.DateTime.ToLocalTime
FileTimeToSystemTime Converts a file time to system time format. System.DateTime.ToUniversalTime
GetFileTime Retrieves the date and time that a file was created, last accessed, and last modified. Any of the following:
System.IO.Directory.GetCreationTime
System.IO.Directory.GetLastAccessTime
System.IO.Directory.GetLastWriteTime
System.IO.DirectoryInfo.CreationTime
System.IO.DirectoryInfo.LastAccessTime
System.IO.DirectoryInfo.LastWriteTime
System.IO.File.GetCreationTime
System.IO.File.GetLastAccessTime
System.IO.File.GetLastWriteTime
System.IO.FileInfo.CreationTime
System.IO.FileInfo.LastAccessTime
System.IO.FileInfo.LastWriteTime
GetSystemTimeAsFileTime Retrieves the current system date and time in UTC format. System.DateTime.UtcNow.ToFileTimeUtc
LocalFileTimeToFileTime Converts a local file time to a file time based on UTC. System.DateTime.ToFileTimeUtc
SetFileTime Sets the date and time that a file was created, last accessed, or last modified. Any of the following:
System.IO.Directory.SetCreationTime
System.IO.Directory.SetLastAccessTime
System.IO.Directory.SetLastWriteTime
System.IO.DirectoryInfo.CreationTime
System.IO.DirectoryInfo.LastAccessTime
System.IO.DirectoryInfo.LastWriteTime
System.IO.File.SetCreationTime
System.IO.File.SetLastAccessTime
System.IO.File.SetLastWriteTime
System.IO.FileInfo.CreationTime
System.IO.FileInfo.LastAccessTime
System.IO.FileInfo.LastWriteTime
SystemTimeToFileTime Converts a system time to a file time. System.DateTime.ToFileTime
GetTickCount Retrieves the number of milliseconds that have elapsed since the system was started. System.Environment.TickCount

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Timer Functions

Win32 function Description .NET Framework API
KillTimer Destroys the specified timer. System.Threading.Timer.Dispose
System.Timers.Timer.Dispose
System.Windows.Forms.Timer.Dispose
QueryPerformanceCounter Retrieves the current value of the high-resolution performance counter. System.Diagnostics.PerformanceCounter.NextValue
System.Diagnostics.PerformanceCounter.RawValue
QueryPerformanceFrequency Retrieves the frequency of the high-resolution performance counter. System.Diagnostics.PerformanceCounter.CounterType
SetTimer Creates a timer with the specified time-out value. Any of the following:
System.Threading.Timer
constructor
System.Timers.Timer
constructor
System.Windows.Forms.Timer
constructor
System.Windows.Forms.Timer.Interval
TimerProc An application-defined callback function that processes WM_TIMER messages. Either of the following:
System.Threading.TimerCallback
delegate
System.Timers.ElapsedEventHandler
delegate

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Tool Help Functions

Win32 function Description .NET Framework API
CreateToolhelp32Snapshot Takes a snapshot of the processes and heaps, modules, and threads used by the processes. System.Diagnostics.Process.GetProcesses
System.Diagnostics.Process.Modules
System.Diagnostics.Process.Threads
Module32First Retrieves information about the first module associated with a process. System.Diagnostics.Process.Modules
Module32Next Retrieves information about the next module associated with a process or thread. System.Diagnostics.Process.Modules
Process32First Retrieves information about the first process encountered in a system snapshot. System.Diagnostics.Process.GetProcesses
Process32Next Retrieves information about the next process recorded in a system snapshot. System.Diagnostics.Process.GetProcesses
Thread32First Retrieves information about the first thread of any process encountered in a system snapshot. System.Diagnostics.Process.Threads
Thread32Next Retrieves information about the next thread of any process encountered in the system memory snapshot. System.Diagnostics.Process.Threads

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Unicode and Character Set Functions

Win32 function Description .NET Framework API
GetTextCharset Retrieves a character-set identifier for the font that is currently selected into a specified device context. System.Drawing.Font.GdiCharSet

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User Profile Functions

Win32 function Description .NET Framework API
CreateEnvironmentBlock Retrieves the environment variables for the specified user. Microsoft.Win32.Registry class
Microsoft.Win32.RegistryKey.OpenSubKey(name).GetValue
DeleteProfile Deletes the user profile and all user-related settings from the specified computer. System.IO.Directory.Delete
Microsoft.Win32.Registry
Microsoft.Win32.RegistryKey.DeleteSubKey
ExpandEnvironmentStringsForUser Expands the source string by using the environment block established for the specified user. Microsoft.Win32.Registry class

Microsoft.Win32.RegistryKey.OpenSubKey(name).GetValueNames, and then call GetValue for each name

GetAllUsersProfileDirectory Retrieves the path to the root of the All Users profile. Microsoft.Win32.Registry class
Microsoft.Win32.RegistryKey.OpenSubKey(name).GetValue
GetDefaultUserProfileDirectory Retrieves the path to the root of the Default User profile. Microsoft.Win32.Registry class
Microsoft.Win32.RegistryKey.OpenSubKey(name).GetValue
GetProfilesDirectory Retrieves the path to the root directory where all of the user profiles are stored. Microsoft.Win32.Registry class
Microsoft.Win32.RegistryKey.OpenSubKey(name).GetValue
GetUserProfileDirectory Retrieves the path to the root directory of the profile for the specified user. Microsoft.Win32.Registry class
Microsoft.Win32.RegistryKey.OpenSubKey(name).GetValue

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Version Information Functions

Win32 function Description .NET Framework API
GetFileVersionInfo Retrieves version information for the specified file. System.Diagnostics.FileVersionInfo.GetVersionInfo
GetFileVersionInfoSize Determines whether the operating system can retrieve version information for a specified file. If version information is available, the function returns the size, in bytes, of that information. System.Diagnostics.FileVersionInfo.GetVersionInfo
VerLanguageName Retrieves a description string for the language associated with a specified binary Microsoft language identifier. System.Globalization.CultureInfo.Name
VerQueryValue Retrieves specified version information from the specified version-information resource. System.Diagnostics.FileVersionInfo properties

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Window Functions

Win32 function Description .NET Framework API
AdjustWindowRect Calculates the required size of the window rectangle, based on the desired client-rectangle size. System.Windows.Forms.Form.ClientSize
AdjustWindowRectEx Calculates the required size of the window rectangle, based on the desired client-rectangle size. System.Windows.Forms.Form.ClientSize
ArrangeIconicWindows Arranges all minimized (iconic) child windows of the specified parent window. System.Windows.Forms.Form.LayoutMdi(MdiLayout.ArrangeIcons)
BringWindowToTop Brings the specified window to the top of the Z order. System.Windows.Forms.Form.BringToFront
CascadeWindows Cascades the specified child windows of the specified parent window. System.Windows.Forms.Form.LayoutMdi(MdiLayout.Cascade)
ChildWindowFromPoint Determines which, if any, of the child windows belonging to a parent window contains the specified point. System.Windows.Forms.Form.GetChildAtPoint
CloseWindow Minimizes (but does not destroy) the specified window. System.Windows.Forms.Form.WindowState = System.Windows.Forms.FormWindowState.Minimized
CreateWindow Creates an overlapped, pop-up, or child window. System.Windows.Forms.Form constructor
CreateWindowEx Creates an overlapped, pop-up, or child window with an extended window style. System.Windows.Forms.Form constructor
DestroyWindow Destroys the specified window. System.Windows.Forms.Form.Close
EnumChildProc An application-defined callback function used with EnumChildWindows. Same as EnumChildWindows
EnumChildWindows Enumerates the child windows that belong to the specified parent window. System.Windows.Forms.Form.Controls
GetAncestor Retrieves the handle to the ancestor of the specified window. System.Windows.Forms.Form.FindForm
System.Windows.Forms.Form.Owner
System.Windows.Forms.Form.Parent
GetClientRect Retrieves the coordinates of the client area for a window. System.Windows.Forms.Form.ClientRectangle
GetForegroundWindow Returns a handle to the foreground window. System.Windows.Forms.Form.ActiveForm
GetLayeredWindowAttributes Retrieves the opacity and transparency color key of a layered window. System.Windows.Forms.Form.Opacity
System.Windows.Forms.Form.TransparencyKey
GetNextWindow Retrieves a handle to the next or previous window in Z order. System.Windows.Forms.Form.Controls[1 +/- Control.IndexOf]
GetParent Retrieves a handle to the parent window for the specified child window. System.Windows.Forms.Form.FindForm
System.Windows.Forms.Form.Parent
GetTitleBarInfo Retrieves information about the specified title bar. System.Windows.Forms.Form.SystemInformation.CaptionButtonSize
System.Windows.Forms.Form.SystemInformation.CaptionHeight
System.Windows.Forms.Form.HelpButton
System.Windows.Forms.Form.MaximizeBox
System.Windows.Forms.Form.MinimizeBox
GetTopWindow Retrieves a handle to the child window at the top of the Z order. System.Windows.Forms.Form.Controls[0]
GetWindow Retrieves a handle to a window that has the specified relationship to the specified window. System.Windows.Forms.Form.Controls
GetWindowInfo Retrieves information about the specified window. System.Windows.Forms.Form.ClientSize
System.Windows.Forms.Form.CreateParams.ExStyle
System.Windows.Forms.Form.CreateParams.Style
System.Windows.Forms.Form.Name
System.Windows.Forms.Form.ProductVersion
System.Windows.Forms.Form.Size
System.Windows.Forms.SystemInformation.BorderSize
GetWindowPlacement Retrieves the show state and the restored, minimized, and maximized positions of the specified window. System.Windows.Forms.Form.Bounds
System.Windows.Forms.Form.MaximizedBounds
System.Windows.Forms.Form.Visible
System.Windows.Forms.Form.WindowState
GetWindowRect Retrieves the dimensions of the bounding rectangle of the specified window. System.Windows.Forms.Form.Bounds
GetWindowText Copies the text of the title bar of the specified window. System.Windows.Forms.Form.Text
GetWindowTextLength Retrieves the length of the title bar text for the specified window. System.Windows.Forms.Form.Text.Length
IsChild Tests whether a window is a child window or descendant window of a specified parent window. System.Windows.Forms.Form.Contains
System.Windows.Forms.Form.IsMdiChild
IsIconic Determines whether the specified window is minimized (iconic). System.Windows.Forms.Form.WindowState
IsWindowVisible Retrieves the visibility state of the specified window. System.Windows.Forms.Form.Visible
IsZoomed Determines whether a window is maximized (zoomed). System.Windows.Forms.Form.WindowState
MoveWindow Changes the position and dimensions of the specified window. System.Windows.Forms.Form.SetBounds
OpenIcon Restores a minimized (iconic) window to its previous size and position. System.Windows.Forms.Form.WindowState = System.Windows.Forms.FormWindowState.Normal
SetForegroundWindow Puts the thread that created the specified window into the foreground and activates the window. System.Windows.Forms.Form.Activate
SetLayeredWindowAttributes Sets the opacity and transparency color key of a layered window. System.Windows.Forms.Form.Opacity
System.Windows.Forms.Form.TransparencyKey
SetParent Changes the parent window of the specified child window. System.Windows.Forms.Form.Parent
SetWindowPlacement Sets the show state and the restored, minimized, and maximized positions of the specified window. System.Windows.Forms.Form.Bounds
System.Windows.Forms.Form.MaximizedBounds
System.Windows.Forms.Form.SetBounds
System.Windows.Forms.Form.Visible
System.Windows.Forms.Form.WindowState
SetWindowPos Changes the size, position, and Z order of a window. System.Windows.Forms.Form.BringToFront
System.Windows.Forms.Form.Enabled
System.Windows.Forms.Form.SendToBack
System.Windows.Forms.Form.SetBounds
System.Windows.Forms.Form.TopMost
System.Windows.Forms.Form.Visible
SetWindowText Changes the text of the title bar for the specified window. System.Windows.Forms.Form.Text
ShowWindow Sets the show state of the specified window. System.Windows.Forms.Form.Show
System.Windows.Forms.Form.Visible
System.Windows.Forms.Form.WindowState
TileWindows Tiles the specified child windows of the specified parent window. System.Windows.Forms.Form.LayoutMdi(MdiLayout.TileHorizontal)
System.Windows.Forms.Form.LayoutMdi(MdiLayout.TileVertical)
WindowFromPoint Retrieves a handle to the window that contains the specified point. System.Windows.Forms.Form.GetChildAtPoint

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Window Class Functions

Win32 function Description .NET Framework API
GetClassInfo Retrieves information about a window class. System.ComponentModel.Component.Events
System.Windows.Forms.Control.Cursor
System.Windows.Forms.Control.Name
System.Windows.Forms.Form.BackColor
System.Windows.Forms.Form.Icon
System.Windows.Forms.Form.Menu
System.Windows.Forms.Form.CreateParams.ClassStyle
GetClassLong Retrieves the specified 32-bit value from the WNDCLASSEX structure associated with the specified window. System.ComponentModel.Component.Events
System.Windows.Forms.Control.Cursor
System.Windows.Forms.Control.Name
System.Windows.Forms.Form.BackColor
System.Windows.Forms.Form.Icon
System.Windows.Forms.Form.Menu
System.Windows.Forms.Form.CreateParams.ClassStyle
GetClassLongPtr Retrieves the specified value from the WNDCLASSEX structure associated with the specified window. System.ComponentModel.Component.Events
System.Windows.Forms.Control.Cursor
System.Windows.Forms.Control.Name
System.Windows.Forms.Form.BackColor
System.Windows.Forms.Form.Icon
System.Windows.Forms.Form.Menu
System.Windows.Forms.Form.CreateParams.ClassStyle
GetClassName Retrieves the name of the class to which the specified window belongs. System.Windows.Forms.Control.Name
GetWindowLong Retrieves information about the specified window. System.ComponentModel.Component.Events
System.Windows.Forms.Control.Parent
System.Windows.Forms.Form.CreateParams.ExStyle
System.Windows.Forms.Form.CreateParams.Style
System.Windows.Forms.Form
properties
GetWindowLongPtr Retrieves information about the specified window. System.ComponentModel.Component.Events
System.Windows.Forms.Control.Parent
System.Windows.Forms.Form.CreateParams.ExStyle
System.Windows.Forms.Form.CreateParams.Style
System.Windows.Forms.Form
properties
RegisterClass Registers a window class. System.Windows.Forms.Control.Cursor
System.Windows.Forms.Control.Name
System.Windows.Forms.Form.BackColor
System.Windows.Forms.Form.Icon
System.Windows.Forms.Form.Menu
System.Windows.Forms.Form.CreateParams.ClassStyle
System.Windows.Forms.Form
events
SetClassLong Replaces the specified 32-bit value at the specified offset into the extra class memory or the WNDCLASSEX structure. System.Windows.Forms.Control.Cursor
System.Windows.Forms.Control.Name
System.Windows.Forms.Form.BackColor
System.Windows.Forms.Form.Icon
System.Windows.Forms.Form.Menu
System.Windows.Forms.Form.CreateParams.ClassStyle
System.Windows.Forms.Form
events
SetClassLongPtr Replaces the specified value at the specified offset into the extra class memory or the WNDCLASSEX structure. System.Windows.Forms.Control.Cursor
System.Windows.Forms.Control.Name
System.Windows.Forms.Form.BackColor
System.Windows.Forms.Form.Icon
System.Windows.Forms.Form.Menu
System.Windows.Forms.Form.CreateParams.ClassStyle
System.Windows.Forms.Form
events
SetWindowLong Changes an attribute of the specified window. System.Windows.Forms.Control.Parent
System.Windows.Forms.Form.CreateParams.ExStyle
System.Windows.Forms.Form.CreateParams.Style
System.Windows.Forms.Form
properties
System.Windows.Forms.Form
events
SetWindowLongPtr Changes an attribute of the specified window. System.Windows.Forms.Control.Parent
System.Windows.Forms.Form.CreateParams.ExStyle
System.Windows.Forms.Form.CreateParams.Style
System.Windows.Forms.Form
properties
System.Windows.Forms.Form
events

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Window Procedure Functions

Win32 function Description .NET Framework API
DefWindowProc Calls the default window procedure to provide default processing for any window messages that an application does not process. Any of the following:
System.Windows.Forms.Form.DefWndProc
System.Windows.Forms.Control.DefWndProc
System.Windows.Forms.NativeWindow.DefWndProc
WindowProc An application-defined function that processes messages sent to a window. Any of the following:
System.Windows.Forms.Form.WndProc
System.Windows.Forms.Control.WndProc
System.Windows.Forms.NativeWindow.WndProc

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Window Property Functions

Win32 function Description .NET Framework API
GetProp Retrieves a data handle from the property list of the specified window. System.Windows.Forms.Control.Tag
RemoveProp Removes an entry from the property list of the specified window. System.Windows.Forms.Control.Tag
SetProp Adds a new entry or changes an existing entry in the property list of the specified window. System.Windows.Forms.Control.Tag

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