python图形界面开发之wxPython树控件使用方法详解

import wx
 
 
# 自定义窗口类MyFrame
class MyFrame(wx.Frame):
  def __init__(self):
    super().__init__(parent=None, title="Tree", size=(500, 400))
    self.Center()
    swindow = wx.SplitterWindow(parent=self, id=-1)
    left = wx.Panel(parent=swindow)
    right = wx.Panel(parent=swindow)
    # 设置左右布局的分割窗口left和right
    swindow.SplitVertically(left, right, 200)
    # 设置最小窗格大小，左右布局指左边窗口大小
    swindow.SetMinimumPaneSize(80)
    # 创建一棵树
 
    self.tree = self.CreateTreeCtrl(left)
    self.Bind(wx.EVT_TREE_SEL_CHANGING, self.on_click, self.tree)
    # 为left面板设置一个布局管理器
    vbox1 = wx.BoxSizer(wx.VERTICAL)
    left.SetSizer(vbox1)
    vbox1.Add(self.tree, 1, flag=wx.EXPAND | wx.ALL, border=5)
    # 为right面板设置一个布局管理器
    vbox2 = wx.BoxSizer(wx.VERTICAL)
    right.SetSizer((vbox2))
    self.st = wx.StaticText(right, 2, label='右侧面板')
    vbox2.Add(self.st, 1, flag=wx.EXPAND | wx.ALL, border=5)
 
  def on_click(self, event):
    item = event.GetItem()
    self.st.SetLabel(self.tree.GetItemText(item))
 
  def CreateTreeCtrl(self, parent):
    tree = wx.TreeCtrl(parent)
    # 通过wx.ImageList()创建一个图像列表imglist并保存在树中
    imglist = wx.ImageList(16, 16, True, 2)
    imglist.Add(wx.ArtProvider.GetBitmap(wx.ART_FOLDER, size=wx.Size(16, 16)))
    imglist.Add(wx.ArtProvider.GetBitmap(wx.ART_NORMAL_FILE, size=(16, 16)))
    tree.AssignImageList(imglist)
    # 创建根节点和5个子节点并展开
    root = tree.AddRoot('TreeRoot', image=0)
    item1 = tree.AppendItem(root, 'Item1', 0)
    item2 = tree.AppendItem(root, 'Item2', 0)
    item3 = tree.AppendItem(root, 'Item3', 0)
    item4 = tree.AppendItem(root, 'Item4', 0)
    item5 = tree.AppendItem(root, 'Item5', 0)
    tree.Expand(root)
    tree.SelectItem(root)
 
    # 给item1节点添加5个子节点并展开
    tree.AppendItem(item1, 'file 1', 1)
    tree.AppendItem(item1, 'file 2', 1)
    tree.AppendItem(item1, 'file 3', 1)
    tree.AppendItem(item1, 'file 4', 1)
    tree.AppendItem(item1, 'file 5', 1)
    tree.Expand(item1)
 
    # 给item2节点添加5个子节点并展开
    tree.AppendItem(item2, 'file 1', 1)
    tree.AppendItem(item2, 'file 2', 1)
    tree.AppendItem(item2, 'file 3', 1)
    tree.AppendItem(item2, 'file 4', 1)
    tree.AppendItem(item2, 'file 5', 1)
    tree.Expand(item2)
 
    # 返回树对象
    return tree
 
 
class App(wx.App):
  def OnInit(self):
    # 创建窗口对象
    frame = MyFrame()
    frame.Show()
    return True
 
  def OnExit(self):
    print("应用程序退出")
    return 0
 
 
if __name__ == '__main__':
  app = App()
  app.MainLoop()