import wx

class ListFrame(wx.Frame):
    def __init__(self, *args, **kwds):
        kwds['style'] = kwds.get('style', 0) | wx.DEFAULT_FRAME_STYLE
        wx.Frame.__init__(self, *args, **kwds)

        self.SetSize((400, 300))
        self.SetTitle('Listadoboz teszt')

        self.listadoboz = wx.ListBox(self)
        self.listadoboz.Append(['alma', 'körte', 'barack', 'szilva'])
        self.listadoboz.Append('málna')


class ListApp(wx.App):
    def OnInit(self):
        self.frame = ListFrame(None, wx.ID_ANY, "")
        self.SetTopWindow(self.frame)
        self.frame.Show()
        return True

if __name__ == "__main__":
    app = ListApp(0)
    app.MainLoop()