MousePosHKS

#include <File.au3>
HotKeySet("{F2}", "_MousePos")

While 1
    Sleep(1000)
WEnd

Func _MousePos()

    Local $file = FileOpen("test.txt", 1) ;file to write to
    If $file = -1 Then
        MsgBox(0, "Error", "Unable to open file.")
        Exit
    EndIf
    Local $pos = MouseGetPos()
    MsgBox(0, "Mouse x,y:", $pos[0] & "," & $pos[1], 1)
    FileWriteLine($file, $pos[0] & $pos[1])

    FileClose($file)
EndFunc   ;==>_MousePos