Hi Sergey,

Thanks for the reply.
Your routine works proir to calling the form.
I was hoping to embed the check into a subclassed form so that, in the load event, it checks if another instance is running, and shuts itself down.
... or similar functionality, embedded in the form itself.

Regards

>>Hi,
>>
>>This is probably VFP 101...
>>I've been dealing with modal forms for the most part, avoiding the problem.
>>How do I prevent multiple instances of a modeless form?
>>
>>TIA
>
>See Prevent form re loading Message #618074.