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-rw-r--r--gtk/gtktreednd.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/gtk/gtktreednd.h b/gtk/gtktreednd.h
index eb983b7aea..517ba50d2a 100644
--- 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__