emit

GUI/View/Canvas/ProjectionsEditorCanvas.cpp

@@ -101,7 +101,7 @@ void ProjectionsEditorCanvas::onEnteringColorMap()
         m_liveProjection->setIsVisible(false);
         m_liveProjection->setParent(this);
 
-        m_data2DItem->projectionPositionChanged(m_liveProjection.get());
+        emit m_data2DItem->projectionPositionChanged(m_liveProjection.get());
     }
 
     m_block_update = false;