Как заставить кнопку работать в чужем окне

#include <GUIConstantsEx.au3>
#include <GuiButton.au3>

AutoItSetOption("WinTitleMatchMode", 4)
Opt("GUIOnEventMode", 1)

run ("calc")
sleep(1000)
$WinH=WinGetHandle ("Калькулятор Плюс")

$AddButton =_GUICtrlButton_Create($WinH, "Button",200,30,100, 15)
GUICtrlSetOnEvent($AddButton, "_Add")

while 1
	Sleep(500)	
WEnd

func _Add ()
run ("notepad")
EndFunc

while 1
if GUIGetMsg()=$AddButton then _Add()
    Sleep(500)  
WEnd

#include <GUIConstantsEx.au3>
#include <GUIButton.au3>

#include "MouseOnEvent.au3"

Global $iPrimaryUpEvent = 0
Global $sCalc_CLASS = "[CLASS:SciCalc]"

Run("Calc")
WinWait($sCalc_CLASS)
$WinH = WinGetHandle($sCalc_CLASS)

$hButton = _GUICtrlButton_Create($WinH, "Button", 10, 25, 100, 15)

_MouseSetOnEvent($MOUSE_PRIMARYUP_EVENT, "PRIMARYUP_EVENT", "", "", $WinH, 0)

While 1
    Sleep(10)
	
	If Not WinExists($sCalc_CLASS) Then
		Exit
	EndIf
	
	If $iPrimaryUpEvent Then
		$iPrimaryUpEvent = 0
		
		If __MouseSetOnEvent_IsHoveredWnd(ControlGetHandle($WinH, "", $hButton)) Then
			Run("Notepad")
		EndIf
	EndIf
WEnd

Func PRIMARYUP_EVENT()
	$iPrimaryUpEvent = 1
EndFunc