Graphics::CopyFromScreen Method (Int32, Int32, Int32, Int32, Size, CopyPixelOperation)
Performs a bit-block transfer of the color data, corresponding to a rectangle of pixels, from the screen to the drawing surface of the Graphics.
Assembly: System.Drawing (in System.Drawing.dll)
public: void CopyFromScreen( int sourceX, int sourceY, int destinationX, int destinationY, Size blockRegionSize, CopyPixelOperation copyPixelOperation )
Parameters
- sourceX
- Type: System::Int32
The x-coordinate of the point at the upper-left corner of the source rectangle.
- sourceY
- Type: System::Int32
The y-coordinate of the point at the upper-left corner of the source rectangle
- destinationX
- Type: System::Int32
The x-coordinate of the point at the upper-left corner of the destination rectangle.
- destinationY
- Type: System::Int32
The y-coordinate of the point at the upper-left corner of the destination rectangle.
- blockRegionSize
- Type: System.Drawing::Size
The size of the area to be transferred.
- copyPixelOperation
- Type: System.Drawing::CopyPixelOperation
One of the CopyPixelOperation values.
| Exception | Condition |
|---|---|
| InvalidEnumArgumentException | copyPixelOperation is not a member of CopyPixelOperation. |
| Win32Exception | The operation failed. |
The CopyFromScreen methods are useful for layering one image on top of another. The copyPixelOperation parameter allows you to specify if and how the source colors should be blended with the colors in the destination area.
The following example demonstrates how to use the CopyFromScreen method. To run this example, paste it into a Windows Form. Handle the form’s Paint event and call the CopyPixels4 method from the Paint event-handling method, passing e as PaintEventArgs.
- UIPermission
for access to all windows. Related enumeration: AllWindows.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.