wxPython – AppendItem() method in wx.TreeCtrl

In this article we will learn about AppendItem() method in wx.TreeCtrl class of wxPython. AppendItem() method is used to append an item to the end of the branch identified by parent, return a new item id.

Append() method takes parent(wx.TreeItemId) as parameter.

Syntax: wx.TreeCtrl.AppendItem()

Parameters

Parameter	Input Type	Description
parent	wx.TreeItemId	parent root for Item.
text	string	text on node
image	int	image parameter is an index within the normal image list specifying the image to unselected items, respectively.
selImage	int	selImage parameter is an index within the normal image list specifying the image to selected items, respectively.
data	TreeItemData	data for root item.

Return Type: wx.TreeItemId

Code Example:

import wx

class MainFrame(wx.Frame):

    def __init__(self):
        wx.Frame.__init__(self, parent = None, title ='TreeCtrl Demo')
        # tree control
        self.tree = wx.TreeCtrl(self, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize)

        # add a root node to tree
        self.root = self.tree.AddRoot('Root ')

        # add item to self.root
        self.tree.AppendItem(self.root, "Item")

        # expand tree
        self.tree.Expand(self.root)

        # show frame
        self.Show()


if __name__ == '__main__':
    app = wx.App(redirect = False)
    frame = MainFrame()
    app.MainLoop()

Output Window: