How to copy all the pixels in a circle in a BITMAP image and paste it to another location in the image?

Question

I am trying to copy an area (circle) onto an image in another part of the image. (As shown below)

Something like CopyRect . The only difference is the form.

Answer 1

• Create a clipping region (CreateEllipticRgn here, CombineRgn for more complex shapes)
• Select it ( SelectClipRgn ) in the context of the target device (Canvas.handle).
• Copy the rectangle containing the desired fragment. Parts outside the clip area remain unchanged.
• Delete clipping area