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VFP6: Timer interval limits
Message
From
28/08/2001 02:46:14
Walter Meester
HoogkarspelNetherlands
 
 
To
27/08/2001 16:12:18
General information
Forum:
Visual FoxPro
Category:
Other
Miscellaneous
Thread ID:
00548280
Message ID:
00549702
Views:
33
Jim,

>You are right. I am wrong.

Thanks, I was getting confused.

>In any case, looking further into this, it looks like it is VFP INTERNAL things that can interfere, NOT external processes. From "The Fundamentals..." by Whil Hentzen:
>"The timer does not process when a menu bar, pull-down menu or popup menu is open. For example, you can cause something to happen when the timer event is fired, such as a WAIT WINDOW command or a message dialog, and the Timer control keeps ticking." (by this I think he means it does not fire, even though the interval may lapse several times during the specific VFP process)

It seems that this also is not correct. In my framework I've got a timer to display statusbar messages in a custom activeX status bar. Since it perfectly displays messages of the open pulldown menu, this can't be the case. I believe this was changed from VFP 5 to VFP 6, but I'm not certain. Though not checked, I think that the only instance VFP is blocking timer events is by:

1. Program running. IOW no wait states to process the timer event, unless a DOEVENTS() is processed.
2. Explicit modal dialogs, like WAIT WINDOW, MESSAGEBOX and the ERROR dialog.

Cheers,

Walter,
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