wxpython核心部件wx.treectrl

#!/usr/bin/python
#coding=gbk
#treectrl.py
#http://www.jbxue.com/python/29640.htm
import wx
class MyFrame(wx.Frame):
def __init__(self, parent, id, title):
wx.Frame.__init__(self, parent, id, title,
wx.DefaultPosition, wx.Size(450, 350))
hbox = wx.BoxSizer(wx.HORIZONTAL)
vbox = wx.BoxSizer(wx.VERTICAL)
panel1 = wx.Panel(self, -1)
panel2 = wx.Panel(self, -1)

self.tree = wx.TreeCtrl(panel1, 1, wx.DefaultPosition, (-1, -1),
wx.TR_HIDE_ROOT|wx.TR_HAS_BUTTONS)
root = self.tree.AddRoot('程序员')
os = self.tree.AppendItem(root, '操作系统')
pl = self.tree.AppendItem(root, '编程语言')
tk = self.tree.AppendItem(root, '工具套件')
self.tree.AppendItem(os, 'Linux')
self.tree.AppendItem(os, 'FreeBSD')
self.tree.AppendItem(os, 'OpenBSD')
self.tree.AppendItem(os, 'NetBSD')
self.tree.AppendItem(os, 'Solaris')
cl = self.tree.AppendItem(pl, '编译语言')
sl = self.tree.AppendItem(pl, '脚本语言')
self.tree.AppendItem(cl, 'Java')
self.tree.AppendItem(cl, 'C++')
self.tree.AppendItem(cl, 'C')
self.tree.AppendItem(cl, 'Pascal')
self.tree.AppendItem(sl, 'Ruby')
self.tree.AppendItem(sl, 'Tcl')
self.tree.AppendItem(sl, 'PHP')
self.tree.AppendItem(sl, 'Python')
self.tree.AppendItem(tk, 'Qt')
self.tree.AppendItem(tk, 'MFC')
self.tree.AppendItem(tk, 'wxPython')
self.tree.AppendItem(tk, 'GTK+')
self.tree.AppendItem(tk, 'Swing')
self.tree.Bind(wx.EVT_TREE_SEL_CHANGED,
self.OnSelChanged, id=1)
self.display = wx.StaticText(panel2, -1, '',
(10, 10), style=wx.ALIGN_CENTER)
vbox.Add(self.tree, 1, wx.EXPAND)
hbox.Add(panel1, 1, wx.EXPAND)
hbox.Add(panel2, 1, wx.EXPAND)
panel1.SetSizer(vbox)
self.SetSizer(hbox)
self.Center()

def OnSelChanged(self, event):
item = event.GetItem()
self.display.SetLabel(self.tree.GetItemText(item))

class MyApp(wx.App):
def OnInit(self):
frame = MyFrame(None, -1, 'treectrl.py')
frame.Show(True)
self.SetTopWindow(frame)
return True

app = MyApp(0)
app.MainLoop()