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wxPython TreeCtrl

  • Last Updated : 08 Jul, 2020

In this article we are going to learn about and TreeCtrl and how can we add TreeCtrl to our window. A tree control presents information as a hierarchy, with items that may be expanded to show further items. Items in a tree control are referenced by wx.TreeItemId handles, which may be tested for validity by calling wx.TreeItemId.IsOk .

We will use TreeCtrl() constructor to create TreeCtrl.

Syntax: wx.TreeCtrl.TreeCtrl(parent, id=ID_ANY, pos=DefaultPosition, size=DefaultSize, style=TR_DEFAULT_STYLE, validator=DefaultValidator, name=TreeCtrlNameStr)

Parameters

ParameterInput TypeDescription
parentwx.WindowParent window. Must not be None.
idwx.WindowIDWindow identifier. The value ID_ANY indicates a default value.
poswx.PointWindow position. If wx.DefaultPosition is specified then a default position is chosen.
sizewx.SizeWindow size. If wx.DefaultSize is specified then the window is sized appropriately.
stylelongWindow Style.
validatorwx.ValidatorWindow Validator
namestringWindow name

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 root to tree
        self.root = self.tree.AddRoot('Root ')
        # add item to root
        self.tree.AppendItem(self.root, 'Child')
        # 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:

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