GtkMenuButton: do not mention GtkArrow in the docs

GtkArrow is deprecated and is not used internally anymore by the
menu button. Document also the fact that if no direction is specified
then the view-context-menu icon is shown.

https://bugzilla.gnome.org/show_bug.cgi?id=733441

diff --git a/gtk/gtkmenubutton.c b/gtk/gtkmenubutton.c
index 5130e3582221e369f74d9bfa0771f6c665ee56d1..605937aad3ada9159ff0312d25efe4215e1fc1e1 100644 (file)
--- a/gtk/gtkmenubutton.c
+++ b/gtk/gtkmenubutton.c
@@ -29,7 +29,10 @@
  *
  * The #GtkMenuButton widget can hold any valid child widget. That is, it
  * can hold almost any other standard #GtkWidget. The most commonly used
- * child is the provided #GtkArrow.
+ * child is #GtkImage. If no widget is explicitely added to the #GtkMenuButton,
+ * a #GtkImage is automatically created, using an arrow image oriented
+ * according to #GtkMenuButton:direction or the generic "view-context-menu"
+ * icon if the direction is not set.
  *
  * The positioning of the popup is determined by the #GtkMenuButton:direction
  * property of the menu button.