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Tip of the Day
Language: VB4/32,VB5,VB6
Expertise: Intermediate
Apr 27, 1999

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Reduce the number of DoEvents

Don't fill your code with unnecessary DoEvents statements, especially within time-critical loops. If you can't avoid that, at least you can reduce the overhead by invoking DoEvents only every N iterations of the loop, using a statement like this:


If (loopNdx Mod 10) = 0 Then DoEvents
Alternatively, if you use DoEvents just to trap mouse and keyboard activity, you can call it only if there are pending items in the event queue; you can check this condition with the GetInputState API function:

Declare Function GetInputState Lib "user32" Alias "GetInputState" () As Long
' ...
If GetInputState() Then DoEvents
Francesco Balena
 
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