[gtk+] Clarify the gtk_style_context_add_provider docs

[Matthias Clasen <matthiasc src gnome org>]

commit 8742f6f09cc2ae17e06a7480bb31a0ef29001189
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat May 26 12:24:13 2012 -0400

    Clarify the gtk_style_context_add_provider docs
    
    https://bugzilla.gnome.org/show_bug.cgi?id=643490

 gtk/gtkstylecontext.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkstylecontext.c b/gtk/gtkstylecontext.c
index 02293b4..04f6461 100644
--- a/gtk/gtkstylecontext.c
+++ b/gtk/gtkstylecontext.c
@@ -1106,6 +1106,10 @@ _gtk_style_context_set_widget (GtkStyleContext *context,
  *            %GTK_STYLE_PROVIDER_PRIORITY_USER
  *
  * Adds a style provider to @context, to be used in style construction.
+ * Note that a style provider added by this function only affects
+ * the style of the widget to which @context belongs. If you want
+ * to affect the style of all widgets, use
+ * gtk_style_context_add_provider_for_screen().
  *
  * <note><para>If both priorities are the same, A #GtkStyleProvider
  * added through this function takes precedence over another added
@@ -1212,8 +1216,7 @@ gtk_style_context_reset_widgets (GdkScreen *screen)
  *            %GTK_STYLE_PROVIDER_PRIORITY_USER
  *
  * Adds a global style provider to @screen, which will be used
- * in style construction for all #GtkStyleContext<!-- -->s under
- * @screen.
+ * in style construction for all #GtkStyleContexts under @screen.
  *
  * GTK+ uses this to make styling information from #GtkSettings
  * available.