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Use of SelectClipRgn

Posted on 2004-10-04
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Last Modified: 2012-08-13

Hello.  I'm trying to superimpose one figure on top of the other.  The figure below will scroll underneath the figure on the bottom.  My approach is this:

One picturebox (A) that contains two pictureboxes (B and C).  I draw my background on picturebox B, which I move in accordance to scrollbars (w/o having to re-draw).  That works great.  I want one static, irregularly-shaped picture (in picturebox C) to sit on top of the scrolling picture, though.  This I am trying to do by applying SelectClipRgn to the picturebox C so that you can see picturebox B scrolling behind it.  

The problem is the clipped region behind picture does not expose Picturebox B, but the *windows desktop*.  It allows the user to see all the way through the app.  How can I tell VB to not re-draw picturebox C, but to redraw the scrolled picturebox B, in the clipped non-rectangular region?

Thanks very much.
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Question by:riceman0
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Erick37 earned 800 total points
ID: 12220386
I think you want to call SetWindowRgn(PictureboxC.hWnd, hRgn, 1)
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by:riceman0
ID: 12220764

Wow, that was dumb.  I knew that.  Thanks, my cluelessness is your 200 points.


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