evilx wxpython drop_

import wxclass MyFileDropTarget(wx.FileDropTarget):    def __init__(self, window):        wx.FileDropTarget.__init__(self)        self.window = window    def OnDropFiles(self, x, y, filenames):        self.window.AppendText("\n%d file(s) dropped at (%d,%d):\n" %                               (len(filenames), x, y))        for file in filenames:            self.window.AppendText("\t%s\n" % file)            class MyFrame(wx.Frame):    def __init__(self):        wx.Frame.__init__(self, None, title="Drop Target",                          size=(500,300))        p = wx.Panel(self)        # create the controls        label = wx.StaticText(p, -1, "Drop some files here:")        text = wx.TextCtrl(p, -1, "",                           style=wx.TE_MULTILINE|wx.HSCROLL)        # setup the layout with sizers        sizer = wx.BoxSizer(wx.VERTICAL)        sizer.Add(label, 0, wx.ALL, 5)        sizer.Add(text, 1, wx.EXPAND|wx.ALL, 5)        p.SetSizer(sizer)        # make the text control be a drop target        dt = MyFileDropTarget(text)        text.SetDropTarget(dt)        app = wx.PySimpleApp()frm = MyFrame()frm.Show()app.MainLoop()