Gtk 3.0窗口與樹型內部擴展器

Question

在python中，與Gtk 3.0，我嘗試獲得與筆記本的窗口。在這個筆記本里面，有一些擴展器。每個擴展器都將包含一個樹視圖。

一些搜索之後，我有這樣的代碼：

import gi 
gi.require_version('Gtk', '3.0') 
from gi.repository import Gtk 

class MyWindow(Gtk.Window): 

    def __init__(self): 
     Gtk.Window.__init__(self, title="Hello World") 

     # Create liststore which will be contained within treeview 
     # liststore has 3 rows and 3 columns 
     self.store = Gtk.ListStore(str, str, float) 
     self.store.append(["string1.1", "string1.2", 1.0]) 
     self.store.append(["string2.1", "string2.2", 2.0]) 
     self.store.append(["string3.1", "string3.2", 3.0]) 

     # Create treeview which will be contained within one expander 
     # treeview has 3 columns and contain liststore 
     self.tree = Gtk.TreeView(self.store) 
     for i, column_title in enumerate(["col1", "col2", "col3"]): 
      renderer = Gtk.CellRendererText() 
      column = Gtk.TreeViewColumn(column_title, renderer, text=i) 
      self.tree.append_column(column) 

     # Addind a callback to selection_changed event of treeview 
     select = self.tree.get_selection() 
     select.connect("changed", self.on_tree_selection_changed) 

     # Create expander which will be contained within one notebook page 
     # Adding treeview inside expander 
     self.page1 = Gtk.Expander() 
     self.page1.set_border_width(10) 
     self.page1.add(self.tree) 

     # Create notebook and adding expander inside first page 
     self.notebook = Gtk.Notebook() 
     self.add(self.notebook) 
     self.notebook.append_page(self.page1, Gtk.Label('Page1')) 

     self.Window = Gtk.Window() 
     self.Window.add(self.notebook) 

     self.show_all() 

    def on_tree_selection_changed(self, selection): 
     model, treeiter = selection.get_selected() 
     if treeiter != None: 
      print("You selected", model[treeiter][0]) 

win = MyWindow() 
win.connect("delete-event", Gtk.main_quit) 
win.show_all() 
Gtk.main() 

我不管理，以顯示內部擴展樹視圖。 但沒有擴展器，顯示樹形視圖。

我在ubuntun 12.04上工作，用python ihm.py命令啓動我的程序。

有些人可以解釋爲什麼它不起作用？

Answer 1

您正在向父級添加筆記本兩次。刪除線

self.Window.add(self.notebook) 

這對我有效。奇怪的是，您沒有收到關於此的錯誤消息。