wxpython Events Vetoing events

wxpython Events Vetoing events

 
import wx

class Example(wx.Frame):
           
    def __init__(self, *args, **kw):
        super(Example, self).__init__(*args, **kw) 
        
        self.InitUI()
                
    def InitUI(self):
        # Bind() method
        #Bind(event, handler, source=None, id=wx.ID_ANY, id2=wx.ID_ANY)
        self.Bind(wx.EVT_CLOSE, self.OnCloseWindow)

        self.SetTitle('Event veto')
        self.Centre()
        self.Show(True)

    def OnCloseWindow(self, e):

        dial = wx.MessageDialog(None, 'Are you sure to quit?', 'Question',
            wx.YES_NO | wx.NO_DEFAULT | wx.ICON_QUESTION)
            
        ret = dial.ShowModal()
        
        if ret == wx.ID_YES:
            self.Destroy()
        else:
            e.Veto()

def main():
    
    ex = wx.App()
    Example(None)
    ex.MainLoop()    


if __name__ == '__main__':
    main()