In this article we are going to learn about AddRoot() method associated with wx.TreeCtrl class of wxPython. AddRoot() is a basic method used in order to add the root node to the tree, returning the new item.
The image and selImage parameters are an index within the normal image list specifying the image to use for unselected and selected items, respectively. If image > -1 and selImage is -1, the same image is used for both selected and unselected items.
Syntax: wx.TreeCtrl.AddRoot(self, text, image=-1, selImage=-1, data=None)
Parameters
Parameter Input Type Description 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.
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 ') # 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:
