#ifndef __GTK_BUBBLE_WINDOW_H__
#define __GTK_BUBBLE_WINDOW_H__
-#include <gtk/gtk.h>
+#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
+#error "Only <gtk/gtk.h> can be included directly."
+#endif
+
+#include <gtk/gtkwindow.h>
G_BEGIN_DECLS