BitBlt help

You can only do it if the other window is completely visible. If it's not, then the contents of the window don't exist.

If it is visible, you can call GetDC() on both windows, then just BitBlt to blit from one window to another. But I suspect the other window isn't visible, is it?

EDIT: You may find This relevant.

Yes the other window is visible

Just thinking off the top of my head here (about to leave work) but I wonder if there's a way to send a redraw message to the other window and specify the DC to use for drawing. This might be possible as this could be the mechanism by which print screen works.

Skizz

Quote:

Original post by Skizz Just thinking off the top of my head here (about to leave work) but I wonder if there's a way to send a redraw message to the other window and specify the DC to use for drawing. This might be possible as this could be the mechanism by which print screen works.

Interesting idea. Although it depends if HDCs can be shared between processes (Which I doubt, unfortunately).

EDIT: Assuming the other window is in another process, of course.