Fix for ambiguous Polygon type when building with MinGW

diff --git a/gtk2_ardour/marker.cc b/gtk2_ardour/marker.cc
index 27fa9f5d42038761690c5f73a2b8868cf2985cba..2492d1a3486d86aa1489cf690a73ed48ec9f3e9f 100644 (file)
--- a/gtk2_ardour/marker.cc
+++ b/gtk2_ardour/marker.cc
@@ -242,7 +242,7 @@ Marker::Marker (PublicEditor& ed, ArdourCanvas::Group& parent, guint32 rgba, con
 
        /* adjust to properly locate the tip */
 
-       mark = new Polygon (*group);
+       mark = new ArdourCanvas::Polygon (*group);
        mark->property_points() = *points;
        set_color_rgba (rgba);
        mark->property_width_pixels() = 1;