Solved bugs with double deletion of map canvas items in Python bindings.

git-svn-id: http://svn.osgeo.org/qgis/trunk@6909 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: wonder

python/gui/qgsmapcanvasitem.sip

@@ -8,7 +8,7 @@ class QgsMapCanvasItem : QGraphicsItem
   protected:
 
     //! protected constructor: cannot be constructed directly
-    QgsMapCanvasItem(QgsMapCanvas* mapCanvas);
+    QgsMapCanvasItem(QgsMapCanvas* mapCanvas /TransferThis/);
 
     virtual ~QgsMapCanvasItem();
 

python/gui/qgsrubberband.sip

@@ -6,7 +6,7 @@ class QgsRubberBand: QgsMapCanvasItem
 %End
 
   public:
-    QgsRubberBand(QgsMapCanvas* mapCanvas, bool isPolygon = false);
+    QgsRubberBand(QgsMapCanvas* mapCanvas /TransferThis/, bool isPolygon = false);
     ~QgsRubberBand();
 
     void setColor(const QColor & color);

python/gui/qgsvertexmarker.sip

@@ -16,7 +16,7 @@ class QgsVertexMarker : QgsMapCanvasItem
       ICON_BOX
     };
 
-    QgsVertexMarker(QgsMapCanvas* mapCanvas);
+    QgsVertexMarker(QgsMapCanvas* mapCanvas /TransferThis/);
 
     void setCenter(const QgsPoint& point);