General Discussion - ScrollWindowEx causes flickering!

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ScrollWindowEx causes flickering!

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Forum Name: General Discussion
Forum Description: Topics Related to Visual C++ MFC Development in General
URL: http://forum.codejock.com/forum_posts.asp?TID=15156
Printed Date: 09 June 2024 at 8:21am
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Topic: ScrollWindowEx causes flickering!

Posted By: znakeeye
Subject: ScrollWindowEx causes flickering!
Date Posted: 11 September 2009 at 4:32am

I've created a CWnd-derived window with scrollbars. In both OnVScroll and OnHScroll I call ScrollWindowEx(..., SW_INVALIDATE) to update my view.

The problem is that vertical scrolling causes extreme flickering (WS_CLIPCHILDREN and WS_CLIPSIBLINGS are set, CS_VREDRAW and CS_HREDRAW are not set). Using CXTMemDC and returning FALSE from OnEraseBkgnd (tried TRUE too).

SB_THUMTRACK causes the flickering... I have to somehow improve the redraw mechanism.

Please help.

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PokerMemento - http://www.pokermemento.com/

Replies:

Posted By: znakeeye
Date Posted: 11 September 2009 at 5:17am

Removing the call to ScrollWindow alltogether solves the problem. *stupid* :P

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PokerMemento - http://www.pokermemento.com/