Hi Geert,
 
 GB> Of course! Since the test is in the program itself (you're testing
 GB> argv[0]) the program is always running when it tries to open the .EXE,
 GB> so it will always fail and gives no information. Furthermore, the fact

I apologize for writing this bullshit (must have been very tired). But
the example using an event semaphores does work. BTW, is there any
difference in using a mutex semaphore for this purpose?

sorry/2 Roland

... I program like a MAN.  I use COPY CON PROGRAM.EXE  
--- Blue Wave/Max v2.12 OS/2 [NR]