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>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)
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Jim & Walter,
You got my curiosity going...I found this in Hacker's Guide:
"Timers fire when the menu is dropped down. They didn't in VFP 3.0. Timers fire in toolbars. Timers fire when a form is being dragged around. Timers fire when another application window is resized, or when Fox's window is resized. Timers fire when your application displays a message box. Awesome!"
So, apparently this changed after VFP3.
Steve Gibson