>>>Hi,
>>>
>>> I had a vfp5.0 application when running, within it do while loop, I cannot control the menu. However, when looping is not done or done, I can still cancel the program by pressing Escape key, I had disable the SET Developement off and option like 'disable escape key' in the option. Still I can exit the program by pressing escape key, it will prompt of 'interrupt, program error' . My code is called by a timer event. What is the problem with my code or did I miss any thing. Any help or advise is appreciated. Thank you.
>>
>>Virusim,
>>
>>You need to SET ESCAPE OFF to disable the interruption of code by the escape key.
>
>Hi,
>
> Thank for your help. However, I still cannot access my menu hot key when my code is looping in a Do WHILE LOOP. My mouse also can't access the pull down menu at all. I can access the menu when the do while loop is completed. Any suggestion or advise.
>THank you.


This is expected behavior. VFP is single threaded, so you won't be able to access the menu or other controls from inside the loop.