[gtk+] [directfb] Fix compile error on DirectFB backend.

[Javier Jardón <jjardon src gnome org>]

commit eb7121c4e6dc1bd124fc2410fc9f65a95c1aa302
Author: Javier Jardón <jjardon gnome org>
Date:   Fri Apr 9 18:08:10 2010 +0200

    [directfb] Fix compile error on DirectFB backend.
    
    Add a stub for gdk_keymap_add_virtual_modifiers()
    
    Fixes https://bugzilla.gnome.org/show_bug.cgi?id=613988

 gdk/directfb/gdkkeys-directfb.c |    7 +++++++
 gdk/gdk.symbols                 |    1 +
 2 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/gdk/directfb/gdkkeys-directfb.c b/gdk/directfb/gdkkeys-directfb.c
index 39f2d33..fb72321 100644
--- a/gdk/directfb/gdkkeys-directfb.c
+++ b/gdk/directfb/gdkkeys-directfb.c
@@ -1998,6 +1998,13 @@ gdk_keymap_lookup_key (GdkKeymap          *keymap,
 	return 0;
 }
 
+void
+gdk_keymap_add_virtual_modifiers (GdkKeymap       *keymap,
+                                  GdkModifierType *state)
+{
+	g_warning ("gdk_keymap_add_virtual_modifiers unimplemented \n");
+}
+
 gboolean
 gdk_keymap_map_virtual_modifiers (GdkKeymap       *keymap,
                                   GdkModifierType *state)
diff --git a/gdk/gdk.symbols b/gdk/gdk.symbols
index d5acc45..548a063 100644
--- a/gdk/gdk.symbols
+++ b/gdk/gdk.symbols
@@ -869,6 +869,7 @@ gdk_keymap_get_for_display
 gdk_keymap_get_caps_lock_state
 gdk_keymap_lookup_key
 gdk_keymap_translate_keyboard_state
+gdk_keymap_add_virtual_modifiers
 gdk_keymap_map_virtual_modifiers
 gdk_keyval_from_name
 gdk_keyval_name G_GNUC_CONST