docs: Clarify the visibility of buttons in GtkStackSwitcher

If a page in the GtkStack is not visible, then the GtkStackSwitcher
won't show a button for it.

diff --git a/gtk/gtkstackswitcher.c b/gtk/gtkstackswitcher.c
index 19c887fc8bb133931380ddd876592b0fda97f5cf..77d567055b8f600651422ccee4e2f450dd52b2a8 100644 (file)
--- a/gtk/gtkstackswitcher.c
+++ b/gtk/gtkstackswitcher.c
@@ -39,10 +39,12 @@
  * the various pages of the associated stack widget.
  *
  * All the content for the buttons comes from the child properties
- * of the #GtkStack.
+ * of the #GtkStack; the button visibility in a #GtkStackSwitcher
+ * widget is controlled by the visibility of the child in the
+ * #GtkStack.
  *
  * It is possible to associate multiple #GtkStackSwitcher widgets
- * with the same stack widget.
+ * with the same #GtkStack widget.
  *
  * The GtkStackSwitcher widget was added in 3.10.
  *