In this particular article we are going to learn about CollapseAll() method associated with wx.TreeCtrl class of wxPython. CollapseAll() method is similar to Collapse() method but Collapse() method only collapses the given item whereas CollapseAll() method collapses the root item.
No arguments are required by CollapseAll() method.
Syntax:
wx.TreeCtrl.CollapseAll(Self)Parameters:
No arguments are required by CollapseAll() method.
Code Example:
Python3
import wx class MyTree(wx.TreeCtrl): def __init__(self, parent, id, pos, size, style): wx.TreeCtrl.__init__(self, parent, id, pos, size, style) class TreePanel(wx.Panel): def __init__(self, parent): wx.Panel.__init__(self, parent) # create Tree Control self.tree = MyTree(self, wx.ID_ANY, wx.DefaultPosition, (100, 70), wx.TR_HAS_BUTTONS) # Add root to Tree Control self.root = self.tree.AddRoot('Something goes here') # Add item to root itm = self.tree.AppendItem(self.root, 'Operating Systems') # 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) # Add button in frame self.btn = wx.Button(self, 1, "Collapse", (10, 100)) # Bind event function with button self.btn.Bind(wx.EVT_BUTTON, self.onclick) def onclick(self, e): # Collapse root of tree self.tree.CollapseAll() 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 Window:
before clicking button
after clicking button
