#include <cstddef>
#include "generic/constant.h"
-#include "generic/callbackfwd.h"
+#include "generic/callback.h"
#include "signal/signalfwd.h"
class Renderer;
class Matrix4;
typedef Vector4 Quaternion;
-typedef Callback1<const Selectable&> SelectionChangeCallback;
+typedef Callback<void(const Selectable&)> SelectionChangeCallback;
typedef SignalHandler1<const Selectable&> SelectionChangeHandler;
class SelectionSystem