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MDI Child Forms Fighting For Control

Posted on 1998-11-25
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Last Modified: 2012-05-04
I have an MDI applications that has several MDIChild Forms, about 25. On occasion, if one of the MDIchild forms is currently active and another is called, it seems they fight for control.  At this point my user has to CTRL-ALT-DELETE.
This seems to be a problem that should never happen.  Any help out there.  This application is currently in VB4.
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Question by:bnields
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idcanada earned 200 total points
ID: 1446736


Ok,
you simply have too many controls on each of the forms.
The GDI resources left must be close to 0.

Here are a few tips on how to solve your problem.

1. If they use toolbars, create 1 on the MDI and work with it
upon the load event of your other forms.
You can easily add and remove the buttons needed.

2. 1 CommonDialog box will do for 1 application.
Call it from your form, you can easily change the behavior
during runtime.

3. 1 ImageList for your whole application is enough.
Print it if you have too... but as long as you know the number
of the image and where it is located, you should be fine.

Good Luck.

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Author Comment

by:bnields
ID: 1446737
Thanks....how can I tell the GDI resources left?  But I will try your solutions.  
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