AutoHotkey volume by Window key

Volume.ahk

#Requires AutoHotkey v2.0-
#SingleInstance Force

DEFAULT_VOLUME := 30

; Single press - mute, unmute. Double press - unmute and default volume.
#F1:: {
    static winf1_presses := 0
    if winf1_presses > 0 { ; Timer already started.
        winf1_presses += 1
    } else { ; Timer not started.
        winf1_presses := 1
        SetTimer AfterTimout, -300 ; Wait for more presses within a 400 millisecond window.
    }

    AfterTimout() {
        if winf1_presses = 1 { ; Single press
            SoundSetMute -1
        } else if winf1_presses >= 2 { ; Double or more presses
            SoundSetMute 0
            SoundSetVolume DEFAULT_VOLUME
        }
        winf1_presses := 0 ; Reset the count to prepare for the next series of presses
    }
}

; Decrease volume
#F2:: SoundSetVolume "-5"
; Increase volume
#F3:: SoundSetVolume "+5"