Hi,
> This code will allow me to run only one version (which I want):
>
> s_hMutex := wapi_CreateMutex( NIL, NIL, "HBNetSvr" )
> IF ! Empty( s_hMutex ) .AND. wapi_GetLastError() == 0
> alert("=> Hello World! OK.")
> ELSE
> alert("=> Application is running. Error")
> return
> ENDIF
>
> This code allows me to run multiple versions, and is functionally no
> different to my eye:
>
> IF ! Empty( wapi_CreateMutex( NIL, NIL, "HBNetSvr" ) ) .AND.
> wapi_GetLastError() == 0
> alert("=> Hello World! OK.")
> ELSE
> alert("=> Application is running. Error")
> return
> ENDIF
>
> Can someone explain it to me?
In second version you don't assign the returned
mutex handle to a variable, therefore it's
instantly released by GC, along with the mutex.
Viktor
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