wxPython wx.MenuItem IsSubMenu()用法及代碼示例

import wx 
  
  
class Example(wx.Frame):
  
    def __init__(self, *args, **kwargs):
        super(Example, self).__init__(*args, **kwargs) 
  
        self.InitUI() 
  
    def InitUI(self):
  
        menubar = wx.MenuBar() 
  
        fileMenu = wx.Menu() 
  
        sm = wx.Menu() 
        sm.Append(wx.ID_ANY, 'Submenu item 1') 
        sm.Append(wx.ID_ANY, 'Submenu item 2') 
        sm.Append(wx.ID_ANY, 'Submenu item 3') 
        item = wx.MenuItem(fileMenu, 1, '&Check\tCtrl + c', helpString ="Check Help") 
        item.SetSubMenu(sm) 
        fileMenu.AppendMenu(wx.ID_ANY, 'I&mport', sm) 
          
        n = item.IsSubMenu() 
        # if item is sub menu 
        if(n == True):
            print("Item is SubMenu Item") 
        else:
            print("Item is not a SubMenu Item") 
        menubar.Append(fileMenu, '&File') 
        self.SetMenuBar(menubar) 
  
        self.SetSize((350, 250)) 
        self.SetTitle('Submenu') 
        self.Centre() 
  
  
  
  
def main():
  
    app = wx.App() 
    ex = Example(None) 
    ex.Show() 
    app.MainLoop() 
  
  
if __name__ == '__main__':
    main()