#IfWinActive ahk_exe Photoshop.exe
Shift::
    Send,{ShiftDown}
    While  (GetKeyState("Shift","P")) {
        sleep,100
        if (GetKeyState("Alt","P")) {
            Send,{ShiftUp}
            Sleep,100
            Send,{AltDown}
            Sleep,100
            Send,{ShiftDown}
;            tooltip, Send Shift & Alt Down

            KeyWait,Shift
;            tooltip, 
            break
        }
    }
return
Shift Up:: Send,{ShiftUp}

Alt::
    if (!GetKeyState("Shift")) {
        Send,{AltDown}
    }
return
Alt Up:: Send,{AltUp}
#IfWinActive