Doc: Fixed memory leak in undo framework example

    Task-number: QTBUG-15756

2 files changed, 7 insertions, 0 deletions

diff --git a/examples/tools/undoframework/commands.cpp b/examples/tools/undoframework/commands.cpp
index 9e81c3e..ff7b0b7 100644
--- a/examples/tools/undoframework/commands.cpp
+++ b/examples/tools/undoframework/commands.cpp
@@ -136,6 +136,12 @@ AddCommand::AddCommand(DiagramItem::DiagramType addType,
 }
 //! [7]
 
+AddCommand::~AddCommand()
+{
+    if (!myDiagramItem->scene())
+        delete myDiagramItem;
+}
+
 //! [8]
 void AddCommand::undo()
 {
diff --git a/examples/tools/undoframework/commands.h b/examples/tools/undoframework/commands.h
index ba27e2d..a4e4ab9 100644
--- a/examples/tools/undoframework/commands.h
+++ b/examples/tools/undoframework/commands.h
@@ -87,6 +87,7 @@ class AddCommand : public QUndoCommand
 public:
     AddCommand(DiagramItem::DiagramType addType, QGraphicsScene *graphicsScene,
                QUndoCommand *parent = 0);
+    ~AddCommand();
 
     void undo();
     void redo();