Add a boxed type for cairo_pattern_t.

gdk/gdkcairo.c

@@ -25,6 +25,8 @@
 
 #include <math.h>
 
+G_DEFINE_BOXED_TYPE (cairo_pattern_t, gdk_cairo_pattern, cairo_pattern_reference, cairo_pattern_destroy)
+
 /**
  * SECTION:cairo_interaction
  * @Short_description: Functions to support using Cairo

gdk/gdkcairo.h

@@ -32,6 +32,9 @@
 G_BEGIN_DECLS
 
 cairo_t *gdk_cairo_create            (GdkWindow          *window);
+#define GDK_TYPE_CAIRO_PATTERN (gdk_cairo_pattern_get_type ())
+
+GType    gdk_cairo_pattern_get_type  (void) G_GNUC_CONST;
 gboolean gdk_cairo_get_clip_rectangle(cairo_t            *cr,
                                       GdkRectangle       *rect);