When I get a DC handle of a window, say a button, I can obtain its image.
But when the button is obstructed by another window, say probably a form,
I'll get the partial form's image along with the button, too!
Which means to say, it's WYIWYG.
I want to get ONLY the image of the button, even when it's obstructed by
other objects.

Is there any solution here?

Thank you.