#ifndef __GTK_ICON_VIEW_ACCESSIBLE_H__
#define __GTK_ICON_VIEW_ACCESSIBLE_H__
+#if !defined (__GTK_A11Y_H_INSIDE__) && !defined (GTK_COMPILATION)
+#error "Only <gtk/gtk-a11y.h> can be included directly."
+#endif
+
#include <gtk/gtk.h>
#include <gtk/a11y/gtkcontaineraccessible.h>