[Элементы GUI] Нажать кнопку в скрытом окне

GUISetState(@SW_HIDE, $Form)

ControlClick($Form,"","button1")

$hForm = GUICreate(...)

...

$Button = GUICtrlCreateButton(...)

...

_SendMessage($hForm, $WM_COMMAND, $Button, GUICtrlGetHandle($Button))

#include <Sendmessage.au3>

$hForm = GUICreate("Gui")
$Button = GUICtrlCreateButton("Button", 100, 100, 100, 100)
GUISetState(@SW_HIDE, $hForm)

_SendMessage($hForm, 0x0111, $Button, GUICtrlGetHandle($Button)) ; $WM_COMMAND = 0x0111

Do
  Switch GUIGetMsg()
    Case $Button
      ConsoleWrite("Click")
    Case -3
      Exit
  EndSwitch
Until 0