- A number of types in GDK have become subclasses of GObject. For the
most part, this should not break anyone's code. However, it's now possible/encouraged to use g_object_ref()/g_object_unref() and other GObject features with these GDK types. The converted types are: GdkWindow, GdkDrawable, GdkPixmap, GdkImage, GdkGC, GdkDragContext, GdkColormap - All drawables including pixmaps used to have a type tag, the GdkWindowType enumeration, which included GDK_WINDOW_PIXMAP. GdkWindowType is now a property of GdkWindow _only_, and there is no GDK_WINDOW_PIXMAP. You can use the GDK_IS_PIXMAP() macro to see if you have a pixmap, if you need to know that. - GtkStyle and GtkRcStyle are now subclasses of GObject as well. This breaks theme engines quite badly, but shouldn't affect most other code. - xthickness/ythickness have moved from GtkStyleClass to GtkStyle (from class to instance). This gives themes a bit more flexibility and is generally more of the Right Thing. You can trivially fix your code with s/style->klass->xthickness/style->xthickness/g and same for ythickness.
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