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-rw-r--r--libs/gtkmm2ext/gtkmm2ext/pixfader.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/libs/gtkmm2ext/gtkmm2ext/pixfader.h b/libs/gtkmm2ext/gtkmm2ext/pixfader.h
index 2953cc6333..26942371d3 100644
--- a/libs/gtkmm2ext/gtkmm2ext/pixfader.h
+++ b/libs/gtkmm2ext/gtkmm2ext/pixfader.h
@@ -27,9 +27,11 @@
#include <gtkmm/adjustment.h>
#include <gdkmm.h>
+#include "gtkmm2ext/visibility.h"
+
namespace Gtkmm2ext {
-class PixFader : public Gtk::DrawingArea
+class LIBGTKMM2EXT_API PixFader : public Gtk::DrawingArea
{
public:
PixFader (Gtk::Adjustment& adjustment, int orientation, int span, int girth);