How can I toggle an application in Auto Hot Key?

Question

I want the app to open if not already open and minimize if it is already open with a single button. How can I do that?

Answer 1

Example:

F1::
    ; If !WinExist("WinTitle ahk_class WinClass", "WinText", "ExcludeTitlePart")
    If !WinExist("ahk_class Notepad") ; "!" means NOT in this case
        Run Notepad ; or Run Fullpath of your app
    else
        WinGet, WinState, MinMax, ahk_class Notepad
        {
            If WinState = -1 ; is minimized
                WinRestore
            else
                WinMinimize
        }
return

Use Window Spy to find the exact title, ahk_class, ahk_exe or text in the window of your app.

See WinExist, Run, WinGet etc. in the documentation.