migration guide: Mention GtkEventBox

Its gone.

Closes: https://gitlab.gnome.org/GNOME/gtk/issues/1243

diff --git a/docs/reference/gtk/migrating-3to4.xml b/docs/reference/gtk/migrating-3to4.xml
index 6532974d3c1cb3f9c25cbfc0cc0cddf7560f77dc..fcb430adad01aa8cbeb90fd0aa49a490e43a52f4 100644 (file)
--- a/docs/reference/gtk/migrating-3to4.xml
+++ b/docs/reference/gtk/migrating-3to4.xml
@@ -286,6 +286,14 @@
       </para>
     </section>
 
+    <section>
+      <title>Stop using GtkEventBox</title>
+      <para>
+        GtkEventBox is no longer needed and has been removed.
+        All widgets receive all events.
+      </para>
+    </section>
+
     <section>
       <title>Adapt to GtkHeaderBar API changes</title>
       <para>