Change CairoWidget::get_active() to be const

diff --git a/libs/gtkmm2ext/gtkmm2ext/cairo_widget.h b/libs/gtkmm2ext/gtkmm2ext/cairo_widget.h
index b6b4ccd83e0c7e2626928e3d755ea42110146c8c..f6db0dbe94c0ef8e528d804fe236ee0afcb721a7 100644 (file)
--- a/libs/gtkmm2ext/gtkmm2ext/cairo_widget.h
+++ b/libs/gtkmm2ext/gtkmm2ext/cairo_widget.h
@@ -54,7 +54,7 @@ public:
           that only use the Active and Normal active states.
        */
        void set_active (bool);
-       bool get_active () { return active_state() != Gtkmm2ext::Off; }
+       bool get_active () const { return active_state() != Gtkmm2ext::Off; }
 
        /* widgets can be told to only draw their "foreground, and thus leave
           in place whatever background is drawn by their parent. the default