wxTreeCtrl::Delete() bug corrected, sample expanded to test it

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1068 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/treectrl/treetest.h

@@ -56,16 +56,16 @@ public:
   void OnSelChanging(wxTreeEvent& event);
   void OnKeyDown(wxTreeEvent& event);
 
-	void GetItemsRecursively(const wxTreeItemId& idParent, long cookie);
+  void GetItemsRecursively(const wxTreeItemId& idParent, long cookie);
+
+  void AddTestItemsToTree(size_t numChildren,
+                          size_t depth);
 
 private:
   void AddItemsRecursively(const wxTreeItemId& idParent,
                            size_t nChildren,
                            size_t depth,
-													 size_t folder);
-
-  void AddTestItemsToTree(size_t numChildren,
-                          size_t depth);
+                           size_t folder);
 
   wxImageList *m_imageListNormal;
 
@@ -84,6 +84,9 @@ public:
   void OnQuit(wxCommandEvent& event);
   void OnAbout(wxCommandEvent& event);
   void OnDump(wxCommandEvent& event);
+  void OnDelete(wxCommandEvent& event);
+  void OnDeleteAll(wxCommandEvent& event);
+  void OnRecreate(wxCommandEvent& event);
 
 private:
   MyTreeCtrl *m_treeCtrl;
@@ -97,6 +100,9 @@ enum
   TreeTest_Quit,
   TreeTest_About,
   TreeTest_Dump,
+  TreeTest_Delete,
+  TreeTest_DeleteAll,
+  TreeTest_Recreate,
   TreeTest_Ctrl = 100
 };