From e03bdbe307d82eb1be5480ff935703cfb3a0ff0b Mon Sep 17 00:00:00 2001
From: Matthias Clasen <mclasen@redhat.com>
Date: Wed, 1 Jan 2020 12:55:21 -0500
Subject: [PATCH] docs: Mention DND in the migration guide

---
 docs/reference/gtk/migrating-3to4.xml | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/docs/reference/gtk/migrating-3to4.xml b/docs/reference/gtk/migrating-3to4.xml
index d64261eee7..49a119ec6c 100644
--- a/docs/reference/gtk/migrating-3to4.xml
+++ b/docs/reference/gtk/migrating-3to4.xml
@@ -903,6 +903,22 @@
         gtk_tooltip_set_custom().
       </para>
     </section>
+
+    <section>
+      <title>Switch to the new DND api</title>
+      <para>
+        The source-side DND apis in GTK 4 have been changed to use a separate object, #GtkDragSource.
+      </para>
+      <para>
+        Instead of calling gtk_drag_source_set() and connecting to #GtkWidget signals, you create
+        a #GtkDragSource object, attach it to the widget with gtk_drag_source_attach(), and connect
+        to #GtkDragSource signals. The signals themselves are fairly similar.
+      </para>
+      <para>
+        Instead of calling gtk_drag_begin() on a widget, use a #GtkDragSource object and call
+        gtk_drag_source_drag_begin().
+      </para>
+    </section>
   </section>
 
 </chapter>