gdk: register GdkAtom as boxed type

gdk/gdk.symbols

@@ -186,6 +186,7 @@ gdk_utf8_to_compound_text
 
 #if IN_HEADER(__GDK_PROPERTY_H__)
 #if IN_FILE(__GDK_PROPERTY_X11_C__)
+gdk_atom_get_type G_GNUC_CONST
 gdk_atom_intern
 gdk_atom_intern_static_string
 gdk_atom_name

gdk/gdkproperty.h

@@ -42,6 +42,7 @@ typedef enum
   GDK_PROP_MODE_APPEND
 } GdkPropMode;
 
+GType   gdk_atom_get_type (void) G_GNUC_CONST;
 GdkAtom gdk_atom_intern (const gchar *atom_name,
 			 gboolean     only_if_exists);
 GdkAtom gdk_atom_intern_static_string (const gchar *atom_name);

gdk/gdktypes.h

@@ -77,6 +77,8 @@ typedef struct _GdkSpan	              GdkSpan;
  */
 typedef guint32			    GdkWChar;
 
+#define GDK_TYPE_ATOM (gdk_atom_get_type ())
+
 typedef struct _GdkAtom            *GdkAtom;
 
 #define GDK_ATOM_TO_POINTER(atom) (atom)

gdk/x11/gdkproperty-x11.c

@@ -393,6 +393,31 @@ intern_atom (const gchar *atom_name,
   return result;
 }
 
+static gpointer
+gdk_atom_copy (gpointer atom)
+{
+  return atom;
+}
+
+static void
+gdk_atom_free (gpointer atom)
+{
+  /* GdkAtom values are interned and must not be freed. */
+}
+
+GType
+gdk_atom_get_type (void)
+{
+  static GType our_type = 0;
+
+  if (our_type == 0)
+    our_type = g_boxed_type_register_static (g_intern_static_string ("GdkAtom"),
+                                             (GBoxedCopyFunc) gdk_atom_copy,
+                                             (GBoxedFreeFunc) gdk_atom_free);
+
+  return our_type;
+}
+
 GdkAtom
 gdk_atom_intern (const gchar *atom_name,
 		 gboolean     only_if_exists)