You can open another file with low level function FOPEN({file},1). If the file is already opened by another app, then FOPEN() returns -1 and FERROR() returns 5 (Acces denied) .


>How can I know if a VFP exe is being used (run)?
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>I have an application that just watches for a certain file in a certain directory. I want to be darn sure it is not running more than once.
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>On my machine I can just look at the tray, but what if some one else is running it too???