At any rate, here's an AHK snippet demonstrating how to do it with process names.  This can be easily adapted to work with window titles instead.

Code: Autohotkey [Select]

1. #Persistent
2. DetectHiddenWindows, On
3.  
4. sProgram1 := "notepad.exe"
5. sProgram2 := "calc.exe"
6. nSeconds  := 1
7. SetTimer, Timer, % nSeconds * 1000
8. Return
9.  
10. Timer:
11. {
12.     Process, Exist, % sProgram1
13.     myProgram1PID := ErrorLevel
14.     Process, Exist, % sProgram2
15.     myProgram2PID := ErrorLevel
16.    
17.     If ( myProgram2PID )
18.     {
19.         Process, Close, % myProgram1PID
20.     }
21.     Else
22.     {
23.         If ( ! myProgram1PID )
24.         {
25.             Run, % sProgram1
26.         }
27.     }
28. }
29. Return

-skwire (August 02, 2017, 02:36 PM)

Could it be the tooltip? What game are you running?

:) Yes! It was the tooltip. Try the latest version.

-skrommel (July 25, 2017, 05:58 AM)