--- a/demos/shared/hoverpoints.cpp	Tue Jan 26 12:42:25 2010 +0200
+++ b/demos/shared/hoverpoints.cpp	Tue Feb 02 00:43:10 2010 +0200
@@ -66,7 +66,7 @@
     m_editable = true;
     m_enabled = true;
 
-    connect(this, SIGNAL(pointsChanged(const QPolygonF &)),
+    connect(this, SIGNAL(pointsChanged(QPolygonF)),
             m_widget, SLOT(update()));
 }