Re: Failure to repaint

"Scott McPhillips [MVP]" <org-dot-mvps-at-scottmcp>
Thu, 17 Aug 2006 08:27:45 -0400
rahulthathoo wrote:


I have a make an animation - looping a few thumbnails on a dialog. FOr
this i first bitblt
the thumbnails on a canvas and then bitblt this canvas onto the dialog.
BUt i also need to
have a combobox on the top above the canvas. But whenever I minimize
the dialog of move it,
the region above the canvas gets all blotted and doesnt repaint. I am
doing all the
animation in my OnPaint() and am also calling the Invalidate(). I
cannot call UpdateWindow()
as this slows down my whole app. I hope someone can help me with this.
Is there is way by
which i can throw the combobox on the canvas?

Anyhelp would be appreciated.


You have probably bypassed the dialog's built in repaint, which would
normally repaint the background after a minimize or move. The best
solution is to put a picture control (CStatic) on the dialog. Then do
your painting in OnPaint of a class you derive from CStatic. And remove
your dialog OnPaint so the default painting will take care of the dialog

Scott McPhillips [VC++ MVP]

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