libmate-panel-applet: Add comments in headers to explain Wayland behavior

Author: wmww

libmate-panel-applet/mate-panel-applet.h

@@ -107,6 +107,7 @@ void mate_panel_applet_set_size_hints(MatePanelApplet* applet, const int* size_h
 
 gboolean mate_panel_applet_get_locked_down(MatePanelApplet* applet);
 
+// Does nothing when not on X11
 void mate_panel_applet_request_focus(MatePanelApplet* applet, guint32 timestamp);
 
 void mate_panel_applet_setup_menu(MatePanelApplet* applet, const gchar* xml, GtkActionGroup* action_group);

libmate-panel-applet/panel-applet-private.h

@@ -25,6 +25,7 @@
 
 G_BEGIN_DECLS
 
+// Returns 0 when not on X11
 guint32      mate_panel_applet_get_xid           (MatePanelApplet *applet,
                                              GdkScreen   *screen);
 const gchar *mate_panel_applet_get_object_path   (MatePanelApplet *applet);

libmate-panel-applet/panel-plug-private.h

@@ -15,6 +15,8 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
+// File should only be used on X11
+
 #ifndef PANEL_PLUG_PRIVATE_H
 #define PANEL_PLUG_PRIVATE_H