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Rah · 2000-02-22T15:08:15

Hi all, I realise this topic has come up numerous times before (I''ve searched..) but nothing quite fits my problem. At the moment, I''m listening out for a WM_ACTIATE msg in my callback procedure, and setting a boolean variable to indicate whether my app has focus or not. Then, I have a main() loop which I call if, and only if, my variable indicates we''re currently active. Ok... my problem is that this only works 1 in 10 times, if that. I''m guessing my problem is that my app is losing focus whilst within main() thus crashing out before realising it''s not active (when it gets to its callback func). Basically what I need is an elegant solution to fix this... asuming my guess is right. I''ve narrowed my flipping() function to be the one that crashes ddraw fully, with all prior blitting/locking functions simply returning DDERR_SURFACELOST. I tried calling my own RestoreAllSurfaces() function before calling flip() so I could see if we had focus (ie. checks if focus is lost, then checks to see if it can restore... if it can''t we must of lost focus). This works 9/10 times, but occasionly still hangs my system. Again, I''m guessing we lose focus inbetween this check, and the actual flip() call. Anyway, I''ve rambled enough and its probably all crap so I''ll stop Any general pointers etc. greatly appreciated, Thanks, -- Rah

Graphics and GPU Programming Programming

Started by Rah February 20, 2000 06:39 PM

9 comments, last by Rah 25 years ago

Rah

Author

122

February 22, 2000 03:08 PM

Hi all,

Ok, thanks for all your replies. Has been very helpful. I''ll definitely continure restoring/reloading all my surfaces... it''s just nice to know why that was happening.

Thanks again

--
Rah

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