Hi,
I have a test loop in a form with a cancel button. I run the loop for 20 seconds and while it runs click on the Cancel button. But nothing happens (inside the Cancel button click I put the messagebox() for testing). Here is the code in my test loop:
nBegin = SECONDS()
DO WHILE .T.
nEnd = SECONDS()
IF nEnd - nBegin > 20
EXIT
ENDIF
toThisform.Draw
DOEVENTS
IF tothisform.lExit
MESSAGEBOX("Clicked on Cancel button")
ENDIF
ENDDO What am I missing? TIA
Update. It appears that the value in _vfp.AutoYield is the key. The default is .F. And if I set it to .T., the loop can be interrupted.
Question: should I set it back to .F. in the form Unload?
TIA
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