Ovveride update() and find all linked views to be updated

Fwk/AppFwk/cafViewer/cafViewer.cpp

@@ -792,3 +792,12 @@ void caf::Viewer::updateOverlayImagePresence()
     }
 }
 
+//--------------------------------------------------------------------------------------------------
+/// Create a virtual method so it is possible to override this function in derived classes
+/// Default implementation calls the base class update()
+//--------------------------------------------------------------------------------------------------
+void caf::Viewer::update()
+{
+    caf::OpenGLWidget::update();
+}
+

Fwk/AppFwk/cafViewer/cafViewer.h

@@ -131,6 +131,8 @@ public:
     // Find out whether the system supports shaders
     static bool             isShadersSupported();
 
+    virtual void            update();
+
 public slots:
     virtual void            slotSetCurrentFrame(int frameIndex);
     virtual void            slotEndAnimation();