#include "pbd/stateful.h"
+#include "gtkmm2ext/visibility.h"
+
namespace Gtk {
class Window;
}
namespace Gtkmm2ext {
-class Keyboard : public sigc::trackable, PBD::Stateful
+class LIBGTKMM2EXT_API Keyboard : public sigc::trackable, PBD::Stateful
{
public:
Keyboard ();