"Re-Enable" a key

#include <WinAPI.au3>

HotKeySet("{ESC}", "Terminate")

Global $pStub_KeyProc = DllCallbackRegister("_KeyProc", "int", "int;ptr;ptr")
Global $hHook = _WinAPI_SetWindowsHookEx($WH_KEYBOARD_LL, DllCallbackGetPtr($pStub_KeyProc), _WinAPI_GetModuleHandle(0), 0)

While 1
    Sleep(100)
WEnd

Func _KeyProc($nCode, $wParam, $lParam)
    If $nCode < 0 Then Return _WinAPI_CallNextHookEx($hHook, $nCode, $wParam, $lParam)
    Local $KBDLLHOOKSTRUCT = DllStructCreate("dword vkCode;dword scanCode;dword flags;dword time;ptr dwExtraInfo", $lParam)
    Local $vkCode = DllStructGetData($KBDLLHOOKSTRUCT, "vkCode")
    If $vkCode = 0x70 Then Return 1
    If $vkCode = 0x71 Then Return 1
    If $vkCode = 0x72 Then Return 1
     _WinAPI_CallNextHookEx($hHook, $nCode, $wParam, $lParam)
EndFunc

Func Terminate()
    DllCallbackFree($pStub_KeyProc)
    _WinAPI_UnhookWindowsHookEx($hHook)
EndFunc