Demo tweaks

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_4_BRANCH@17980 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

wxPython/demo/wxTreeCtrl.py

@@ -107,8 +107,20 @@ class TestTreeCtrlPanel(wxPanel):
         if self.tree.GetItemText(event.GetItem()) == "The Root Item":
             wxBell()
             self.log.WriteText("You can't edit this one...\n")
+
+            # Lets just see what's visible of its children
+            cookie = 0
+            root = event.GetItem()
+            (child, cookie) = self.tree.GetFirstChild(root, cookie)
+            while child.IsOk():
+                self.log.WriteText("Child [%s] visible = %d" %
+                                   (self.tree.GetItemText(child),
+                                    self.tree.IsVisible(child)))
+                (child, cookie) = self.tree.GetNextChild(root, cookie)
+
             event.Veto()
 
+
     def OnEndEdit(self, event):
         self.log.WriteText("OnEndEdit\n")
         # show how to reject edit, we'll not allow any digits