Graphics.CopyFromScreen Method (Point, Point, Size, CopyPixelOperation)
Performs a bit-block transfer of 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( Point upperLeftSource, Point upperLeftDestination, Size blockRegionSize, CopyPixelOperation copyPixelOperation )
Parameters
- upperLeftSource
-
Type:
System.Drawing.Point
The point at the upper-left corner of the source rectangle.
- upperLeftDestination
-
Type:
System.Drawing.Point
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 CopyPixels2 method from the Paint event-handling method, passing e as PaintEventArgs.
for access to all windows. Related enumeration: AllWindows.
Available since 2.0