|CanvasBitmapCopyPixelsFromBitmap Method (CanvasBitmap, Int32, Int32, Int32, Int32, Int32, Int32)|
public void CopyPixelsFromBitmap( CanvasBitmap otherBitmap, int destX, int destY, int sourceRectLeft, int sourceRectTop, int sourceRectWidth, int sourceRectHeight )
The region must be able to fit, and the pixel formats of the two bitmaps must match. The destination point and source region are specified in pixels (not DIPs).
It's an error to copy a bitmap onto itself.
This method is most efficient when both bitmaps were created from the same CanvasDevice, but is also able to copy between bitmaps of different devices.