define __GTK_H_INSIDE__ around including all other headers.

[~andy/gtk] / gtk / gtktreednd.h

diff --git a/gtk/gtktreednd.h b/gtk/gtktreednd.h
index eb983b7aea0ee3f8521d5efeb4aefc9dbaeb5106..517ba50d2ab5e8369a8b89475770df263601d54a 100644 (file)
--- a/gtk/gtktreednd.h
+++ b/gtk/gtktreednd.h
@@ -17,6 +17,10 @@
  * Boston, MA 02111-1307, USA.
  */
 
+#if defined(GTK_DISABLE_SINGLE_INCLUDES) && !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
+#error "Only <gtk/gtk.h> can be included directly."
+#endif
+
 #ifndef __GTK_TREE_DND_H__
 #define __GTK_TREE_DND_H__