AutoHotkey Community

;
;    Author:      Bkid <Bkid@bemaniso.ws>
;   Thanks to corrupt for the original mouse locking code.
;
;   This script finds the size of the SC2 window, its edges, and locks
;   the mouse into the window. This way, you can use the mouse scroll,
;   even if you're windowed. You can lock the mouse by turning CapsLock on,
;   and unlock it by turning CapsLock off.

#SingleInstance Force
#Persistent
Menu, Tray, NoStandard
Menu, Tray, Add, Credits
Menu, Tray, Add, Exit
TrayTip, Mouse lock v1.0 for SC2, CapsLock on = Lock the mouse to the StarCraft 2 window.`nCapsLock off = Release the mouse., 5, 1
SetCapsLockState, Off
SetTimer, LockCheck, 5

LockCheck:
GetKeyState, CapsState, CapsLock, T
If CapsState = D
{
Lock("StarCraft II")
Suspend, Off
WinActivate, StarCraft II
Return
} else {
Lock()
Suspend, On
return
}

Lock(llwindowname="")
{
  VarSetCapacity(llrectA, 16)
  WinGetPos, llX, llY, llWidth, llHeight, %llwindowname%
  If (!llWidth AND !llHeight) {
    DllCall("ClipCursor")
    Return, False
  }
  Loop, 4 {
    DllCall("RtlFillMemory", UInt,&llrectA+0+A_Index-1, UInt,1, UChar,(llX + 4) >> 8*A_Index-8)
    DllCall("RtlFillMemory", UInt,&llrectA+4+A_Index-1, UInt,1, UChar,(llY + 30) >> 8*A_Index-8)
    DllCall("RtlFillMemory", UInt,&llrectA+8+A_Index-1, UInt,1, UChar,(llWidth + llX - 4)>> 8*A_Index-8)
    DllCall("RtlFillMemory", UInt,&llrectA+12+A_Index-1, UInt,1, UChar,(llHeight + llY - 4) >> 8*A_Index-8)
  }
  DllCall("ClipCursor", "UInt", &llrectA)
Return, True
}

Credits:
MsgBox, 262144,, Mouse lock v1.0 for StarCraft II by Bkid (Bkid@bemaniso.ws).`n`nThanks to corrupt on the AutoHotKey forums for the`ninitial mouse locking code.
return

Exit:
exitapp