wxPython – Two step creation wx.TreeCtrl
In this article we are going to learn that how can we create a Tree Control using two step creation. In order to do that we will use Create() method in wx.TreeCtrl class. Basically, we will initialize tree control using TreeCtrl() constructor with empty paranthesis and then we will use Create() method and attributes to associate with Tree Control.
Syntax:
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wx.TreeCtrl.Create(self, parent, id=ID_ANY, pos=DefaultPosition, size=DefaultSize, style=TR_DEFAULT_STYLE, validator=DefaultValidator, name=TreeCtrlNameStr)
Parameters:
Parameter Type Description parent wx.Window parent window/frame for Tree Control. id wx.WindowID widget identifier to be associated with Tree Control pos wx.Point position where to put Tree Control. size wx.Size size of the Tree Control widget style long style for Tree Control. validator wx.Validator Validator associated withTree Control. name string Name of Tree Control.
Code Example:
Python
import wx class TreePanel(wx.Panel): def __init__(self, parent): wx.Panel.__init__(self, parent) # initialize Tree Control self.tree = wx.TreeCtrl(self, wx.ID_ANY, wx.DefaultPosition, (100, 70), wx.TR_HAS_BUTTONS) # create Tree Control using Create() method self.tree.Create # Add root to Tree Control self.root = self.tree.AddRoot('Root') # Add item to root itm = self.tree.AppendItem(self.root, 'Item') # Add item to 'itm' self.tree.AppendItem(itm, "Sub Item") # Expand whole tree self.tree.Expand(self.root) sizer = wx.BoxSizer(wx.VERTICAL) sizer.Add(self.tree, 0, wx.EXPAND) self.SetSizer(sizer) class MainFrame(wx.Frame): def __init__(self): wx.Frame.__init__(self, parent = None, title ='TreeCtrl Demo') panel = TreePanel(self) self.Show() if __name__ == '__main__': app = wx.App(redirect = False) frame = MainFrame() app.MainLoop() |
Output:
