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I was trying to look over the ZoomScrollBar sample and incorporated some of the stuff into a sample application I’m working on for testing purposes. I ran into an issue where if you use the scroll bard and the move the application off screen and then back the part that was not shown is now black. If you then hover over a location for the tool tip window to appear and give you more information when it disappears a black section is left behind. If the application is behind another app when launched the entire screen is drawn black.

It looks like my repaint is messed up when you move the scroll bar or have it hidden under another application on start up. I’m not exactly sure what is going on and I’ve looked over the ZoomScrollBar over and over and still can’t find anything wrong. Would you happen to know what I might be doing wrong or could point me in a direction to resolve this?

Thank you for your interest in Prof-UIS. Could you send your test application to us or provide the exact steps how to reproduce this problem using our sample applications?