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-rw-r--r--libs/gtkmm2ext/gtkmm2ext/activatable.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/libs/gtkmm2ext/gtkmm2ext/activatable.h b/libs/gtkmm2ext/gtkmm2ext/activatable.h
index f8e2b5dd38..b9828d36cf 100644
--- a/libs/gtkmm2ext/gtkmm2ext/activatable.h
+++ b/libs/gtkmm2ext/gtkmm2ext/activatable.h
@@ -23,6 +23,8 @@
#include <gtkmm/action.h>
+#include "gtkmm2ext/visibility.h"
+
namespace Gtkmm2ext {
/**
@@ -30,7 +32,7 @@ namespace Gtkmm2ext {
Gtkmm itself has a class for this. I don't know why we don't use it.
*/
-class Activatable {
+class LIBGTKMM2EXT_API Activatable {
public:
virtual ~Activatable() {}