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OnIdle() doesn't work

Posted on 1998-02-20
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Last Modified: 2013-11-20
I've a problem with the CApp::OnIdle()-routine:

In my SDI-App I installed an OnIdle() that works perfectly. Now I want to show a fullscreen-animation after a button is pushed and I want to use the OnIdle -routine to check for updating the (full) screen (20Hz or so). Therefore I create a new Wnd (with WS_POPUP|WS_MAXIMIZE|WS_VISIBLE style and all the stuff) and draw a bitmap to it. That's ok. But from then on my OnIdle() won't be called unless I move the mouse or press a key. As far as I found out this behaviour depends on the size of the created Wnd. If the mouse isn't in the client-area of the new Wnd during the creation, OnIdle is called. But only as long as I don't move the mouse(!) (no matter if inside or outside the new Wnd). Keypressing is ok.

Has anyone an idea of how to work around that?

Thanks
Elrond
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Question by:elrond
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Accepted Solution

by:
Tommy Hui earned 400 total points
ID: 1316440
OnIdle will only be called while you return TRUE.

The other possibility would be to create a timer and use WM_TIMER to do your animation.


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Author Comment

by:elrond
ID: 1316441
Excellent! I returned CWinApp::OnIdle(lCount)
as suggested by the class-wizzard. (Another example of "You better don't rely on things like class-wizzard if you haven't coded the stuff by hand yet and know exactly what's going on".)

Thanks
elrond


0
 

Author Comment

by:elrond
ID: 1316442
Excellent! I returned CWinApp::OnIdle(lCount)
as suggested by the class-wizzard. (Another example of "You better don't rely on things like class-wizzard if you haven't coded the stuff by hand yet and know exactly what's going on".)
btw OnTimer is too slow for animations....

Thanks
elrond


0

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