Graphics::CopyFromScreen Method (Point, Point, Size)
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 )
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.
| Exception | Condition |
|---|---|
| Win32Exception | The operation failed. |
The CopyFromScreen methods are useful for layering one image on top of another. To specify how the source and destination colors are blended, use one of the CopyFromScreen methods that takes a CopyPixelOperation parameter.
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 CopyPixels1 method from the Paint event-handling method, passing e as PaintEventArgs.
for access to all windows. Related enumeration: AllWindows.
Available since 2.0