#include <Misc.au3>
#include <WindowsConstants.au3>
HotKeySet("{ESC}", "Quit")
While 1
If _IsPressed("11") Then ; 11 is the virtual key code for Ctrl
_BlockInputEx(1) ; Block keyboard input
Sleep(100) ; Wait for 100 milliseconds
_BlockInputEx(0) ; Unblock keyboard input
EndIf
WEnd
Func Quit()
Exit
EndFunc