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Main App Window flashing when graph starts/stops
Message by Norby Mahoney on Thursday, December 12, 2002 at 09:43  
Location: United States   Joined: Thursday, May 02, 2002   Posts: 2   Profile Search Quote

Using the Osprey-100, I've built a graph that has both capture and preview pins rendered.   The capturing is constantly starting/stopping.  Every time this occurs, the entire Main Window for my application flashes.  This only occurs if I have 'Use Direct Draw (fast)' selected under the 'Configuration' tab for the card.  If 'Use DibDraw (flexible)' selected, the problem goes away.  I want to use Direct Draw (for speed/look/minimal CPU usage). 

So any suggestions as to what I can do to prevent this flashing from occuring?  I control the capture stream for a certain number of seconds, then when EC_COMPLETE is trapped, I restart it the capture stream (I'm going in a pseudo-loop), over & over again. 

Any ideas would be much appreciated.


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