0001023: Crash when quitting after using Windows > Tile

src/Gui/MDIView.cpp

@@ -76,13 +76,17 @@ void MDIView::deleteSelf()
 {
     // When using QMdiArea make sure to remove the QMdiSubWindow
     // this view is associated with.
+    //
+    // #0001023: Crash when quitting after using Windows > Tile
+    // Use deleteLater() instead of delete operator.
 #if !defined (NO_USE_QT_MDI_AREA)
     QWidget* parent = this->parentWidget();
     if (qobject_cast<QMdiSubWindow*>(parent))
-        delete parent;
+        parent->deleteLater();
     else
 #endif
-        delete this;
+        this->deleteLater();
+    _pcDocument = 0;
 }
 
 void MDIView::setOverrideCursor(const QCursor& c)

src/Gui/View3DInventor.cpp

@@ -179,6 +179,12 @@ View3DInventor::~View3DInventor()
     delete _viewer;
 }
 
+void View3DInventor::deleteSelf()
+{
+    _viewer->setDocument(0);
+    MDIView::deleteSelf();
+}
+
 PyObject *View3DInventor::getPyObject(void)
 {
     if (!_viewerPy)

src/Gui/View3DInventor.h

@@ -73,6 +73,7 @@ public:
     /// Mesage handler
     virtual bool onMsg(const char* pMsg, const char** ppReturn);
     virtual bool onHasMsg(const char* pMsg) const;
+    virtual void deleteSelf();
     /// Observer message from the ParameterGrp
     virtual void OnChange(ParameterGrp::SubjectType &rCaller,ParameterGrp::MessageType Reason);
     /// get called when the document is updated