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

src/generic/treectrl.cpp

@@ -51,7 +51,7 @@ public:
                      int image, int selImage,
                      wxTreeItemData *data );
 
-  inline ~wxGenericTreeItem();
+  ~wxGenericTreeItem();
 
   // trivial accessors
   wxArrayTreeItems& GetChildren() { return m_children; }
@@ -688,6 +688,12 @@ wxTreeItemId wxTreeCtrl::AppendItem(const wxTreeItemId& parentId,
 void wxTreeCtrl::Delete(const wxTreeItemId& itemId)
 {
   wxGenericTreeItem *item = itemId.m_pItem;
+  wxGenericTreeItem *parent = item->GetParent();
+
+  if ( parent )
+  {
+    parent->GetChildren().Remove(item);
+  }
 
   delete item;