Go to the files area here (the yellow file cabinet) and the Classes/VCX section. Look for a file titled "Run only one instance" (or something like that).

>I have created an exe from project manager. Now I run it from the windows. I want to make a check when already my exe is executing in windows it prevent to execut it again in windows. If I again try to run it, it just select the already running exe file like other windows based programs.
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>Aftab Ahmad