#MaxThreadsPerHotkey 2

Menu, Tray, Icon, c:\windows\syswow64\msctf.dll, 21,
Menu, Tray, Tip, AutoFire

SetKeyDelay, 0, 50

Gui, Add, Text,, AutoFire activator:
Gui, Add, Hotkey, vOutputVar, F12

Gui, Add, Text,, AutoFire key:
Gui, Add, Hotkey, vKey

Gui, Add, CheckBox, vSpaceIsFire, Use Space as fire (and not AutoFire key)!

Gui, Add, Text,, AutoFire delay.
Gui, Add, Edit, Number vDelay, 500

Gui, Add, Button, Default w80, OK

Gui Show, Center w250, AutoFire ;w200
return

ButtonOK:
Gui, Submit  ; Save the input from the user to each control's associated variable.
Hotkey,%OutputVar%,DoIt
Return
ExitApp


DoIt:
Toggle := !Toggle
while Toggle
{
if SpaceIsFire
Send, {Space}
Else
Send, %Key%
Sleep, %Delay%
}
Return