Hi, Eurico
Ages ago someone passed me the enclosed routine.
What you do is put it in your main prg and when you run it, it will allow only
one instance.
I needed it in the old days, when memory was scarce, and this girl was in the
habit of going back to her app by simply clicking on the app's desktop icon.
This happened every time she minimized the app window. So, every time she went
to the bathroom, or talked on the phone, she would come back and click on the
icon again, instead of looking down the bottom part of the screen and maximize
the window. It would slow down her computer and she would raise hell (she was
the company president's girlfriend), blaming it on the program (and me by
extension).
So, in desperation I asked for help and a kind soul sent me the enclosed
routine.
To test it, put it in a prg and name it justone.prg. Then go to the VFP options
and make this prg the startup program.
VFP will start once. The second time, it will simply quit. You can adapt it by
giving the lcSoleWindow property the name of your exe.
Please, do not ask me to explain how it works. I never understood why a call to
a line class is necessary but well, it works.
Regards
Rafael Copquin
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