wxPython – wx.TreeCtrl中的ClearFocusedItem()方法

在这篇文章中，我们将学习与wxPython的wx.TreeCtrl类相关的ClearFocusedItem()方法。ClearFocusedItem()是一个简单的方法，用于清除树形控件的当前焦点项。

语法：wx.TreeCtrl.ClearFocusedItem(self)

参数。ClearFocusedItem()方法不需要任何参数。

代码示例。

import wx
  
class Tree(wx.Panel):
  
    def __init__(self, parent):
        wx.Panel.__init__(self, parent)
  
        # create Tree Control in frame
        self.tree = wx.TreeCtrl(self, wx.ID_ANY, wx.DefaultPosition,
                                                 wx.DefaultSize,
                                                 wx.TR_HAS_BUTTONS)
  
        # Create root for Tree Control
        self.root = self.tree.AddRoot('Root')
  
        # Add item to root
        item = self.tree.AppendItem(self.root, 'Item')
  
        # Clear focused item
        self.tree.ClearFocusedItem()
  
        # expand tree
        self.tree.Expand(self.root)
  
        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(self.tree, 0, wx.EXPAND)
        self.SetSizer(sizer)
  
# main root frame for tree control
class rootframe(wx.Frame):
    def __init__(self):
        wx.Frame.__init__(self, parent = None, title ='TreeCtrl Demo')
        panel = Tree(self)
        self.Show()
  
  
if __name__ == '__main__':
    app = wx.App(redirect = False)
    frame = rootframe()
    app.MainLoop()

输出窗口：

wxPython - wx.TreeCtrl中的ClearFocusedItem()方法