single instance run

[Davider]

Probably it's the OnScreenDisplay problem in exe. Need to wait until OSD closed

Using the mes function still doesn't work 
 

Code:

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if(GetLastError=ERROR_ALREADY_EXISTS) ;;another instance of your exe is running
,;possibly execute some code here
,;sub.osdTip ;;no work
,mes "running!" ;;no work
,ret ;;exit exe

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I just want to make it so that when the EXE program is run again, a message pops up to inform the user that the program is already running.
For applications with a system tray icon, this feature is very useful.

If implementing this in QM is too complicated, please skip it. Maybe, at some point in the future, I'll find a solution.