子窗口与主窗口分开处理

#include <GUIConstantsEx.au3>
 
$mainwindow = GUICreate("Hello World", 300, 200)
GUICtrlCreateLabel("Hello world!", 30, 10)
$okbutton = GUICtrlCreateButton("opened the subform", 20, 30, 150)
 
主窗口点击按钮后又创建了一个新的子窗口，在关闭子窗口时主窗口也关闭了
$dummywindow = GUICreate("Dummy window for testing ", 200, 100)
 
GUISwitch($mainwindow)
GUISetState(@SW_SHOW)
 
While 1
  $msg = GUIGetMsg(1)
 
  Select
    Case $msg[0] = $okbutton
      GUISetState(@SW_SHOW,$dummywindow)
 
    Case $msg[0] = $GUI_EVENT_CLOSE And $msg[1] = $mainwindow 
 
      Exit
  Case $msg[0] = $GUI_EVENT_CLOSE And $msg[1] = $dummywindow
          GUISetState(@SW_HIDE,$dummywindow)
  EndSelect
WEnd