wxpython 文件拖拽

#!/usr/bin/env python
# -*- encoding:utf-8 -*-
'''tuofang example'''

import wx

class MyApp(wx.App):

    pass

class FileDropTarget(wx.FileDropTarget):
    def __init__(self, window):
          wx.FileDropTarget.__init__(self)
          self.window = window

    def OnDropFiles(self,  x,  y, fileNames):
          self.window.SetValue(str(fileNames))

class MyFrame(wx.Frame):

    def __init__(self, parent, id):

        wx.Frame.__init__(self, parent, id, title = u'拖放例子', size = (778,494))
        panel=wx.Panel(self)
        textBox=wx.TextCtrl(panel, pos = (50, 50),size =(300, 200))
        dropTarget = FileDropTarget(textBox)
        textBox.SetDropTarget( dropTarget )

if __name__=='__main__':
    app=MyApp()
    frame=MyFrame(parent=None,id=-1)
    frame.Show(True)
    app.MainLoop()