python 创建弹出式菜单的实现代码

import win32ui import win32api from win32con import * from pywin.mfc import window class MyWnd(window.Wnd):   def __init__ (self):     window.Wnd.__init__(self,win32ui.CreateWnd())     self._obj_.CreateWindowEx(WS_EX_CLIENTEDGE,/                  win32ui.RegisterWndClass(0,0,COLOR_WINDOW+1),/                  'MFC GUI',WS_OVERLAPPEDWINDOW,/                  (10,10,800,500),None,0,None)     self.HookMessage(self.OnRClick,WM_RBUTTONDOWN)        def OnClose(self):     self.EndModalLoop(0)   def OnRClick(self,param):     submenu = win32ui.CreatePopupMenu()     submenu.AppendMenu(MF_STRING,1054,'Copy')     submenu.AppendMenu(MF_STRING,1055,'Paste')     submenu.AppendMenu(MF_STRING,1056,None)     submenu.AppendMenu(MF_STRING,1057,'Cut')     flag = TPM_LEFTALIGN|TPM_LEFTBUTTON|TPM_RIGHTBUTTON     submenu.TrackPopupMenu(param[5],flag,self) w = MyWnd() w.ShowWindow() w.UpdateWindow() w.RunModalLoop(1)