CWnd Members

Article
11/16/2012

Base Class Members

Data Members

Indicates the HWND attached to this CWnd.

Construction/Destruction

CWnd	Constructs a CWnd object.
DestroyWindow	Destroys the attached Windows window.

Initialization

Attach	Attaches a Windows handle to a CWnd object.
CalcWindowRect	Called to calculate the window rectangle from the client rectangle.
Create	Creates and initializes the child window associated with the CWnd object.
CreateControl	Create an ActiveX control that will be represented in an MFC program by a CWnd object.
CreateEx	Creates a Windows overlapped, pop-up, or child window and attaches it to a CWnd object.
DeleteTempMap	Called automatically by the CWinApp idle-time handler and deletes any temporary CWnd objects created by FromHandle.
Detach	Detaches a Windows handle from a CWnd object and returns the handle.
FromHandle	Returns a pointer to a CWnd object when given a handle to a window. If a CWnd object is not attached to the handle, a temporary CWnd object is created and attached.
FromHandlePermanent	Returns a pointer to a CWnd object when given a handle to a window. If a CWnd object is not attached to the handle, NULL is returned.
GetExStyle	Returns the window's extended style.
GetSafeHwnd	Returns m_hWnd, or NULL if the this pointer is NULL.
GetStyle	Returns the current window style.
PreCreateWindow	Called before the creation of the Windows window attached to this CWnd object.
PreSubclassWindow	Allows other necessary subclassing to occur before SubclassWindow is called.
SubclassWindow	Attaches a window to a CWnd object and makes it route messages through the CWnd's message map.
UnsubclassWindow	Detaches a window from a CWnd object

Window State Functions

BeginModalState	Call this member function to make a frame window modal.
EnableWindow	Enables or disables mouse and keyboard input.
EndModalState	Call this member function to change a frame window from modal to modeless.
GetActiveWindow	Retrieves the active window.
GetCapture	Retrieves the CWnd that has the mouse capture.
GetDesktopWindow	Retrieves the Windows desktop window.
GetFocus	Retrieves the CWnd that currently has the input focus.
GetForegroundWindow	Returns a pointer to the foreground window (the top-level window with which the user is currently working).
GetIcon	Retrieves the handle to an icon.
GetWindowContextHelpId	Retrieves the help context identifier.
IsWindowEnabled	Determines whether the window is enabled for mouse and keyboard input.
ModifyStyle	Modifies the current window style.
ModifyStyleEx	Modifies the window's extended style.
SetActiveWindow	Activates the window.
SetCapture	Causes all subsequent mouse input to be sent to the CWnd.
SetFocus	Claims the input focus.
SetForegroundWindow	Puts the thread that created the window into the foreground and activates the window.
SetIcon	Sets the handle to a specific icon.
SetWindowContextHelpId	Sets the help context identifier.

Window Size and Position

ArrangeIconicWindows	Arranges all the minimized (iconic) child windows.
BringWindowToTop	Brings CWnd to the top of a stack of overlapping windows.
CloseWindow	Minimizes the window.
GetClientRect	Gets the dimensions of the CWnd client area.
GetWindowPlacement	Retrieves the show state and the normal (restored), minimized, and maximized positions of a window.
GetWindowRect	Gets the screen coordinates of CWnd.
GetWindowRgn	Retrieves a copy of the window region of a window.
IsIconic	Determines whether CWnd is minimized (iconic).
IsZoomed	Determines whether CWnd is maximized.
MoveWindow	Changes the position and dimensions of CWnd.
SetWindowPlacement	Sets the show state and the normal (restored), minimized, and maximized positions for a window.
SetWindowPos	Changes the size, position, and ordering of child, pop-up, and top-level windows.
SetWindowRgn	Sets the region of a window.

Window Access Functions

CenterWindow	Centers a window relative to its parent.
ChildWindowFromPoint	Determines which, if any, of the child windows contains the specified point.
FindWindow	Returns the handle of the window, which is identified by its window name and window class.
FindWindowEx	Returns the handle of the window, which is identified by its window name and window class.
GetAncestor	Retrieves the ancestor window object of the specified window.
GetDescendantWindow	Searches all descendant windows and returns the window with the specified ID.
GetDlgCtrlID	If the CWnd is a child window, calling this function returns its ID value.
GetDlgItem	Retrieves the control with the specified ID from the specified dialog box.
GetLayeredWindowAttributes	Retrieves the opacity and transparency color key of a layered window.
GetLastActivePopup	Determines which pop-up window owned by CWnd was most recently active.
GetNextWindow	Returns the next (or previous) window in the window manager's list.
GetOwner	Retrieves a pointer to the owner of a CWnd.
GetParent	Retrieves the parent window of CWnd (if any).
GetParentFrame	Retrieves the CWnd object's parent frame window.
GetParentOwner	Returns a pointer to a child window's parent window.
GetSafeOwner	Retrieves the safe owner for the given window.
GetTopLevelFrame	Retrieves the window's top-level frame window.
GetTopLevelOwner	Retrieves the top-level window.
GetTopLevelParent	Retrieves the window's top-level parent.
GetTopWindow	Returns the first child window that belongs to the CWnd.
GetWindow	Returns the window with the specified relationship to this window.
GetWindowInfo	Returns information about the window.
GetWindowedChildCount	Returns the number of associated child windows.
GetWindowlessChildCount	Returns the number of associated windowless child windows.
IsChild	Indicates whether CWnd is a child window or other direct descendant of the specified window.
SendMessageToDescendants	Sends a message to all descendant windows of the window.
SetDlgCtrlID	Sets the window or control ID for the window (which can be any child window, not only a control in a dialog box).
SetOwner	Changes the owner of a CWnd.
SetParent	Changes the parent window.
UpdateData	Initializes or retrieves data from a dialog box.
UpdateDialogControls	Call to update the state of dialog buttons and other controls.
WindowFromPoint	Identifies the window that contains the given point.

Update/Painting Functions

AnimateWindow	Animates the associated window object.
BeginPaint	Prepares CWnd for painting.
DrawAnimatedRects	Draws a wire-frame rectangle and animates it to indicate the opening of an icon or the minimizing or maximizing of a window.
DrawCaption	Draws a caption.
EnableScrollBar	Enables or disables one or both arrows of a scroll bar.
EndPaint	Marks the end of painting.
GetDC	Retrieves a display context for the client area.
GetDCEx	Retrieves a display context for the client area, and enables clipping while drawing.
GetUpdateRect	Retrieves the coordinates of the smallest rectangle that completely encloses the CWnd update region.
GetUpdateRgn	Retrieves the CWnd update region.
GetWindowDC	Retrieves the display context for the whole window, including the caption bar, menus, and scroll bars.
Invalidate	Invalidates the entire client area.
InvalidateRect	Invalidates the client area within the given rectangle by adding that rectangle to the current update region.
InvalidateRgn	Invalidates the client area within the given region by adding that region to the current update region.
IsWindowVisible	Determines whether the window is visible.
LockWindowUpdate	Disables or reenables drawing in the given window.
Print	Draws the current window in the specified device context.
PrintWindow	Copies a visual window into the specified device context, typically a printer DC.
PrintClient	Draws any window in the specified device context (usually a printer device context).
RedrawWindow	Updates the specified rectangle or region in the client area.
ReleaseDC	Releases client and window device contexts, freeing them for use by other applications.
SetLayeredWindowAttributes	Sets the opacity and transparency color key of a layered window.
SetRedraw	Allows changes in CWnd to be redrawn or prevents changes from being redrawn.
ShowOwnedPopups	Shows or hides all pop-up windows owned by the window.
ShowWindow	Shows or hides the window.
UnlockWindowUpdate	Unlocks a window that was locked with CWnd::LockWindowUpdate.
UpdateLayeredWindow	Updates the position, size, shape, content, and translucency of a layered window.
UpdateWindow	Updates the client area.
ValidateRect	Validates the client area within the given rectangle by removing the rectangle from the current update region.
ValidateRgn	Validates the client area within the given region by removing the region from the current update region.

Coordinate Mapping Functions

ClientToScreen	Converts the client coordinates of a given point or rectangle on the display to screen coordinates.
MapWindowPoints	Converts (maps) a set of points from the coordinate space of the CWnd to the coordinate space of another window.
ScreenToClient	Converts the screen coordinates of a given point or rectangle on the display to client coordinates.

Window Text Functions

GetFont	Retrieves the current font.
GetWindowText	Returns the window text or caption title (if it has one).
GetWindowTextLength	Returns the length of the window's text or caption title.
SetFont	Sets the current font.
SetWindowText	Sets the window text or caption title (if it has one) to the specified text.

Scrolling Functions

EnableScrollBarCtrl	Enables or disables a sibling scroll-bar control.
GetScrollBarCtrl	Returns a sibling scroll-bar control.
GetScrollInfo	Retrieves the information that the SCROLLINFO structure maintains about a scroll bar.
GetScrollLimit	Retrieves the limit of the scroll bar.
GetScrollPos	Retrieves the current position of a scroll box.
GetScrollRange	Copies the current minimum and maximum scroll-bar positions for the given scroll bar.
RepositionBars	Repositions control bars in the client area.
ScrollWindow	Scrolls the contents of the client area.
ScrollWindowEx	Scrolls the contents of the client area. Similar to ScrollWindow, with additional features.
SetScrollInfo	Sets information about the scroll bar.
SetScrollPos	Sets the current position of a scroll box and, if specified, redraws the scroll bar to reflect the new position.
SetScrollRange	Sets minimum and maximum position values for the given scroll bar.
ShowScrollBar	Displays or hides a scroll bar.

Drag-Drop Functions

DragAcceptFiles

Indicates the window will accept dragged files.

Caret Functions

CreateCaret	Creates a new shape for the system caret and gets ownership of the caret.
CreateGrayCaret	Creates a gray block for the system caret and gets ownership of the caret.
CreateSolidCaret	Creates a solid block for the system caret and gets ownership of the caret.
GetCaretPos	Retrieves the client coordinates of the caret's current position.
HideCaret	Hides the caret by removing it from the display screen.
SetCaretPos	Moves the caret to a specified position.
ShowCaret	Shows the caret on the display at the caret's current position. Once shown, the caret begins flashing automatically.

Dialog-Box Item Functions

CheckDlgButton	Places a check mark next to or removes a check mark from a button control.
CheckRadioButton	Checks the specified radio button and removes the check mark from all other radio buttons in the specified group of buttons.
ContinueModal	Continues a window's modal status.
DlgDirList	Fills a list box with a file or directory listing.
DlgDirListComboBox	Fills the list box of a combo box with a file or directory listing.
DlgDirSelect	Retrieves the current selection from a list box.
DlgDirSelectComboBox	Retrieves the current selection from the list box of a combo box.
EndModalLoop	Ends a window's modal status.
ExecuteDlgInit	Initiates a dialog resource.
GetCheckedRadioButton	Returns the ID of the currently checked radio button in a group of buttons.
GetScrollBarInfo	Retrieves information about the specified scroll bar.
GetTitleBarInfo	Retrieves information about the specified title bar.
GetMenuBarInfo	Retrieves information about the specified menu bar.
GetDlgItemInt	Translates the text of a control in the given dialog box to an integer value.
GetDlgItemText	Retrieves the caption or text associated with a control.
GetNextDlgGroupItem	Searches for the next (or previous) control within a group of controls.
GetNextDlgTabItem	Retrieves the first control with the WS_TABSTOP style that follows (or precedes) the specified control.
IsDialogMessage	Determines whether the given message is intended for the modeless dialog box and, if so, processes it.
IsDlgButtonChecked	Determines whether a button control is checked.
RunModalLoop	Retrieves, translates, or dispatches messages for a window that is in modal status.
SendDlgItemMessage	Sends a message to the specified control.
SetDlgItemInt	Sets the text of a control to the string that represents an integer value.
SetDlgItemText	Sets the caption or text of a control in the specified dialog box.
SubclassDlgItem	Attaches a Windows control to a CWnd object and makes it route messages through the CWnd's message map.

Data-Binding Functions

BindDefaultProperty	Binds the calling object's default simple bound property, as marked in the type library, to a cursor associated with a data-source control.
BindProperty	Binds a cursor-bound property on a data-bound control to a data-source control and registers that relationship with the MFC binding manager.
GetDSCCursor	Retrieves a pointer to the underlying cursor that is defined by the DataSource, UserName, Password, and SQL properties of a data-source control.

DrawMenuBar	Redraws the menu bar.
GetMenu	Retrieves a pointer to the specified menu.
GetSystemMenu	Allows the application to access the Control menu for copying and modification.
HiliteMenuItem	Highlights or removes the highlighting from a top-level (menu-bar) menu item.
SetMenu	Sets the menu to the specified menu.

Tool Tip Functions

CancelToolTips	Disables the tooltip control.
EnableToolTips	Enables the tooltip control.
EnableTrackingToolTips	Enables the tooltip control in tracking mode.
FilterToolTipMessage	Retrieves the title or text associated with a control in a dialog box.
OnToolHitTest	Determines whether a point is in the bounding rectangle of the specified tool and retrieves information about the tool.

Timer Functions

KillTimer	Kills a system timer.
SetTimer	Installs a system timer that sends a WM_TIMER message when triggered.

Alert Functions

FlashWindow	Flashes the window once.
FlashWindowEx	Flashes the window with additional functionality.
MessageBox	Creates and displays a window that contains an application-supplied message and caption.

Window Message Functions

Default	Calls the default window procedure, which provides default processing for any window messages that an application does not process.
GetCurrentMessage	Returns a pointer to the message this window is currently processing. Should only be called when in an OnMessage message-handler member function.
PostMessage	Places a message in the application queue, then returns without waiting for the window to process the message.
PreTranslateMessage	Used by CWinApp to filter window messages before they are dispatched to the TranslateMessage and DispatchMessage Windows functions.
SendMessage	Sends a message to the CWnd object and does not return until it has processed the message.
SendNotifyMessage	Sends the specified message to the window and returns as soon as possible, depending on whether the calling thread created the window.

Clipboard Functions

ChangeClipboardChain	Removes CWnd from the chain of Clipboard viewers.
GetClipboardOwner	Retrieves a pointer to the current owner of the Clipboard.
GetClipboardViewer	Retrieves a pointer to the first window in the chain of Clipboard viewers.
GetOpenClipboardWindow	Retrieves a pointer to the window that currently has the Clipboard open.
OpenClipboard	Opens the Clipboard. Other applications will not be able to modify the Clipboard until the Windows CloseClipboard function is called.
SetClipboardViewer	Adds CWnd to the chain of windows that are notified whenever the contents of the Clipboard are changed.

ActiveX Controls

GetControlUnknown	Retrieves a pointer to an unknown ActiveX control.
GetOleControlSite	Retrieves the custom site for the specified ActiveX control.
GetProperty	Retrieves an ActiveX control property.
InvokeHelper	Invokes an ActiveX control method or property.
OnAmbientProperty	Implement ambient property values.
SetProperty	Sets an ActiveX control property.

Overridables

DefWindowProc	Calls the default window procedure, which provides default processing for any window messages that an application does not process.
DoDataExchange	For dialog data exchange and validation. Called by UpdateData.
OnChildNotify	Called by a parent window to give a notifying control a chance to respond to a control notification.
OnNotify	Called by the framework to inform a parent window an event has occurred in one of its controls or that the control needs information.
PostNcDestroy	This virtual function is called by the default OnNcDestroy function after the window has been destroyed.
WindowProc	Provides a window procedure for a CWnd. The default dispatches messages through the message map.

Help Command Handlers and Functions

HtmlHelp	Called to initiate the HTMLHelp application.
OnHelpFinder	Handles the ID_HELP_FINDER and ID_DEFAULT_HELP commands.
OnHelpIndex	Handles the ID_HELP_INDEX command and provides a default Help topic.
OnHelpUsing	Handles the ID_HELP_USING command.
OnHelp	Handles F1 Help within the application (using the current context).
WinHelp	Called to initiate the WinHelp application.

Initialization Message Handlers

OnInitMenu	Called when a menu is about to become active.
OnInitMenuPopup	Called when a pop-up menu is about to become active.

System Message Handlers

OnChangeUIState	Called when the user interface (UI) state should be changed.
OnQueryUIState	Called to retrieve the user interface (UI) state for a window.
OnUpdateUIState	Called to change the user interface (UI) state for the specified window and all its child windows.
OnCompacting	Called when Windows detects that system memory is low.
OnDevModeChange	Called for all top-level windows when the user changes device-mode settings.
OnDropFiles	Called when the user releases the left mouse button over a window that has registered itself as the recipient of dropped files.
OnFontChange	Called when the pool of font resources changes.
OnPaletteChanged	Called to allow windows that use a color palette to realize their logical palettes and update their client areas.
OnPaletteIsChanging	Informs other applications when an application is going to realize its logical palette.
OnSpoolerStatus	Called from Print Manager whenever a job is added to or removed from the Print Manager queue.
OnSysChar	Called when a keystroke translates to a system character.
OnSysColorChange	Called for all top-level windows when a change is made in the system color setting.
OnSysCommand	Called when the user selects a command from the Control menu, or when the user selects the Maximize or Minimize button.
OnSysDeadChar	Called when a keystroke translates to a system dead character (such as accent characters).
OnSysKeyDown	Called when the user holds down the ALT key and then presses another key.
OnSysKeyUp	Called when the user releases a key that was pressed while the ALT key was held down.
OnTimeChange	Called for all top-level windows after the system time changes.
OnWindowPosChanged	Called when the size, position, or Z-order has changed as a result of a call to SetWindowPos or another window-management function.
OnWindowPosChanging	Called when the size, position, or Z-order is about to change as a result of a call to SetWindowPos or another window-management function.
OnWinIniChange	Called for all top-level windows after the Windows initialization file, WIN.INI, is changed.

General Message Handlers

OnActivate	Called when CWnd is being activated or deactivated.
OnActivateApp	Called when the application is about to be activated or deactivated.
OnCancelMode	Called to allow CWnd to cancel any internal modes, such as mouse capture.
OnChildActivate	Called for multiple document interface (MDI) child windows whenever the size or position of CWnd changes or CWnd is activated.
OnClose	Called as a signal that CWnd should be closed.
OnCommand	Called when the user selects a command.
OnContextMenu	Called when the user clicks the right mouse button in the window.
OnCopyData	Copies data from one application to another.
OnCreate	Called as a part of window creation.
OnCtlColor	Called if CWnd is the parent of a control when the control is about to be drawn.
OnDestroy	Called when CWnd is being destroyed.
OnDeviceChange	Notifies an application or device driver of a change to the hardware configuration of a device or the computer.
OnEnable	Called when CWnd is enabled or disabled.
OnEndSession	Called when the session is ending.
OnEnterIdle	Called to inform an application's main window procedure that a modal dialog box or a menu is entering an idle state.
OnEraseBkgnd	Called when the window background needs erasing.
OnGetMinMaxInfo	Called whenever Windows needs to know the maximized position or dimensions, or the minimum or maximum tracking size.
OnIconEraseBkgnd	Called when CWnd is minimized (iconic) and the background of the icon must be filled before painting the icon.
OnKillFocus	Called immediately before CWnd loses the input focus.
OnMenuChar	Called when the user presses a menu mnemonic character that doesn't match any of the predefined mnemonics in the current menu.
OnMenuSelect	Called when the user selects a menu item.
OnMove	Called after the position of the CWnd has been changed.
OnMoving	Indicates that a user is moving a CWnd object.
OnPaint	Called to repaint a portion of the window.
OnParentNotify	Called when a child window is created or destroyed, or when the user clicks a mouse button while the cursor is over the child window.
OnQueryDragIcon	Called when a minimized (iconic) CWnd is about to be dragged by the user.
OnQueryEndSession	Called when the user chooses to end the Windows session.
OnQueryNewPalette	Informs CWnd that it is about to receive the input focus.
OnQueryOpen	Called when CWnd is an icon and the user requests that the icon be opened.
OnSetFocus	Called after CWnd gains the input focus.
OnShowWindow	Called when CWnd is to be hidden or shown.
OnSize	Called after the size of CWnd has changed.
OnSizing	Indicates that the user is resizing the rectangle.
OnStyleChanged	Indicates that the SetWindowLong Windows function has changed one or more of the window's styles.
OnStyleChanged	Indicates that one or more of the window's styles has changed.
OnStyleChanging	Indicates that the SetWindowLong Windows function is about to change one or more of the window's styles.
OnStyleChanging	Indicates that one or more of the window's styles is about to change.

Control Message Handlers

OnCharToItem	Called by a child list box with the LBS_WANTKEYBOARDINPUT style in response to a WM_CHAR message.
OnCompareItem	Called to determine the relative position of a new item in a child sorted owner-draw combo box or list box.
OnDeleteItem	Called when an owner-draw child list box or combo box is destroyed or when items are removed from the control.
OnDrawItem	Called when a visual aspect of an owner-draw child button control, combo-box control, list-box control, or menu needs to be drawn.
OnGetDlgCode	Called for a control so the control can process arrow-key and TAB-key input itself.
OnMeasureItem	Called for an owner-draw child combo box, list box, or menu item when the control is created. CWnd informs Windows of the dimensions of the control.
OnVKeyToItem	Called by a list box owned by CWnd in response to a WM_KEYDOWN message.
OnWndMsg	Indicates if a windows message was handled.
ReflectChildNotify	Helper function which reflects a message to its source.
ReflectLastMsg	Reflects the last message to the child window.
SendChildNotifyLastMsg	Provides a notification message to a child window, from the parent window, so the child window can handle a task.

Input Message Handlers

OnCaptureChanged	Sends a message to the window that is losing the mouse capture.
OnChar	Called when a keystroke translates to a nonsystem character.
OnDeadChar	Called when a keystroke translates to a nonsystem dead character (such as accent characters).
OnHScroll	Called when the user clicks the horizontal scroll bar of CWnd.
OnKeyDown	Called when a nonsystem key is pressed.
OnKeyUp	Called when a nonsystem key is released.
OnLButtonDblClk	Called when the user double-clicks the left mouse button.
OnLButtonDown	Called when the user presses the left mouse button.
OnLButtonUp	Called when the user releases the left mouse button.
OnMButtonDblClk	Called when the user double-clicks the middle mouse button.
OnMButtonDown	Called when the user presses the middle mouse button.
OnMButtonUp	Called when the user releases the middle mouse button.
OnMouseActivate	Called when the cursor is in an inactive window and the user presses a mouse button.
OnMouseMove	Called when the mouse cursor moves.
OnMouseWheel	Called when a user rotates the mouse wheel. Uses Windows NT 4.0 message handling.
OnRButtonDblClk	Called when the user double-clicks the right mouse button.
OnRButtonDown	Called when the user presses the right mouse button.
OnRButtonUp	Called when the user releases the right mouse button.
OnRegisteredMouseWheel	Called when a user rotates the mouse wheel. Uses Windows 95/98 and Windows NT 3.51 message-handling.
OnSetCursor	Called if mouse input is not captured and the mouse causes cursor movement within a window.
OnTimer	Called after each interval specified in SetTimer.
OnVScroll	Called when the user clicks the window's vertical scroll bar.

Nonclient-Area Message Handlers

OnNcActivate	Called when the nonclient area needs to be changed to indicate an active or inactive state.
OnNcCalcSize	Called when the size and position of the client area need to be calculated.
OnNcCreate	Called prior to OnCreate when the nonclient area is being created.
OnNcDestroy	Called when the nonclient area is being destroyed.
OnNcHitTest	Called by Windows every time the mouse is moved if CWnd contains the cursor or has captured mouse input with SetCapture.
OnNcLButtonDblClk	Called when the user double-clicks the left mouse button while the cursor is within a nonclient area of CWnd.
OnNcLButtonDown	Called when the user presses the left mouse button while the cursor is within a nonclient area of CWnd.
OnNcLButtonUp	Called when the user releases the left mouse button while the cursor is within a nonclient area of CWnd.
OnNcMButtonDblClk	Called when the user double-clicks the middle mouse button while the cursor is within a nonclient area of CWnd.
OnNcMButtonDown	Called when the user presses the middle mouse button while the cursor is within a nonclient area of CWnd.
OnNcMButtonUp	Called when the user releases the middle mouse button while the cursor is within a nonclient area of CWnd.
OnNcMouseMove	Called when the cursor is moved within a nonclient area of CWnd.
OnNcPaint	Called when the nonclient area needs painting.
OnNcRButtonDblClk	Called when the user double-clicks the right mouse button while the cursor is within a nonclient area of CWnd.
OnNcRButtonDown	Called when the user presses the right mouse button while the cursor is within a nonclient area of CWnd.
OnNcRButtonUp	Called when the user releases the right mouse button while the cursor is within a nonclient area of CWnd.

MDI Message Handlers

OnMDIActivate

Called when an MDI child window is activated or deactivated.

Clipboard Message Handlers

OnAskCbFormatName	Called by a Clipboard viewer application when a Clipboard owner will display the Clipboard contents.
OnChangeCbChain	Notifies that a specified window is being removed from the chain.
OnDestroyClipboard	Called when the Clipboard is emptied through a call to the Windows EmptyClipboard function.
OnDrawClipboard	Called when the contents of the change.
OnHScrollClipboard	Called when a Clipboard owner should scroll the Clipboard image, invalidate the appropriate section, and update the scroll-bar values.
OnPaintClipboard	Called when the client area of the Clipboard viewer needs repainting.
OnRenderAllFormats	Called when the owner application is being destroyed and needs to render all its formats.
OnRenderFormat	Called for the Clipboard owner when a particular format with delayed rendering needs to be rendered.
OnSizeClipboard	Called when the size of the client area of the Clipboard-viewer window has changed.
OnVScrollClipboard	Called when the owner should scroll the Clipboard image, invalidate the appropriate section, and update the scroll-bar values.

OnEnterMenuLoop	Called when a menu modal loop has been entered.
OnExitMenuLoop	Called when a menu modal loop has been exited.

Operators

operator !=	Determines if a window is not the same as the window whose handle is m_hWnd.
operator ==	Determines if a window is the same as the window whose handle is m_hWnd.
operator HWND	Call to get a handle to a window.

Active Accessibility Functions

accDoDefaultAction	Called by the framework to perform the object's default action.
accHitTest	Called by the framework to retrieve the child element or child object at a given point on the screen.
accLocation	Called by the framework to retrieve the specified object's current screen location.
accNavigate	Called by the framework to traverse to another user interface element within a container and if possible, retrieve the object.
accSelect	Called by the framework to modify the selection or move the keyboard focus of the specified object.
CreateAccessibleProxy	Creates an Active Accessibility proxy for the specified object.
EnableActiveAccessibility	Enables user-defined Active Accessibility functions.
get_accChild	Called by the framework to retrieve the address of an IDispatch interface for the specified child.
get_accChildCount	Called by the framework to retrieve the number of children belonging to this object.
get_accDefaultAction	Called by the framework to retrieve a string that describes the object's default action.
get_accDescription	Called by framework to retrieve a string that describes the visual appearance of the specified object.
get_accFocus	Called by the framework to retrieve the object that has the keyboard focus.
get_accHelp	Called by the framework to retrieve an object's Help property string.
get_accHelpTopic	Called by the framework to retrieve the full path of the WinHelp file associated with the specified object and the identifier of the appropriate topic within that file.
get_accKeyboardShortcut	Called by the framework to retrieve the specified object's shortcut key or access key.
get_accName	Called by the framework to retrieve the name of the specified object.
get_accParent	Called by the framework to retrieve the IDispatch interface of the object's parent.
get_accRole	Called by the framework to retrieve information that describes the role of the specified object.
get_accSelection	Called by the framework to retrieve the selected children of this object.
get_accState	Called by the framework to retrieve the current state of the specified object.
NotifyWinEvent	Signals the system that a predefined event occurred.
get_accValue	Called by the framework to retrieve the value of the specified object.
PaintWindowlessControls	Draws windowless controls on the control container.

Change History

Date	History	Reason
February 2009	Fixed broken internal topic links in the category table, and updated formatting.	Customer feedback.

CWnd Members

Data Members

Construction/Destruction

Initialization

Window State Functions

Window Size and Position

Window Access Functions

Update/Painting Functions

Coordinate Mapping Functions

Window Text Functions

Scrolling Functions

Drag-Drop Functions

Caret Functions

Dialog-Box Item Functions

Data-Binding Functions

Menu Functions

Tool Tip Functions

Timer Functions

Alert Functions

Window Message Functions

Clipboard Functions

ActiveX Controls

Overridables

Help Command Handlers and Functions

Initialization Message Handlers

System Message Handlers

General Message Handlers

Control Message Handlers

Input Message Handlers

Nonclient-Area Message Handlers

MDI Message Handlers

Clipboard Message Handlers

Menu Loop Notification

Operators

Active Accessibility Functions

See Also

Reference

Change History

Additional resources