1 Incompatible Changes from GTK+-1.2 to GTK+-1.4:
3 * The gdk_time* functions have been removed. This functionality
4 has been unused since the main loop was moved into GLib
7 * The signature for GtkPrintFunc (used for gtk_item_factory_dump_items)
8 has been changed to take a 'const gchar *' instead of 'gchar *', to
9 match what we do for glib, and other similar cases.
11 * The detail arguments in the GtkStyleClass structure are now 'const gchar *'.
13 * gtk_paned_set_gutter_size() has been removed, since the small handle tab
14 has been changed to include the entire area previously occupied by
17 * GDK no longer selects OwnerGrabButtonMask for button presses. This means
18 that the automatic grab that occurs when the user presses a button
19 will have owner_events = FALSE, so all events are redirected to the
20 grab window, even events that would normally go to other windows of the
23 * GtkColorSelectionDialog has now been moved into it's own set of files,
24 gtkcolorseldialog.c and gtkcolorseldialog.h.
26 * Type system changes:
27 - GTK_TYPE_OBJECT is not a fundamental type anymore. Type checks of the
28 style (GTK_FUNDAMENTAL_TYPE (some_type) == GTK_TYPE_OBJECT)
29 will not work anymore. As a replacement, (GTK_TYPE_IS_OBJECT (some_type))
31 - The following types vanished: GTK_TYPE_ARGS, GTK_TYPE_CALLBACK,
32 GTK_TYPE_C_CALLBACK, GTK_TYPE_FOREIGN. With them, the corresponding GtkARg
33 fields and field access macros vanished as well.
34 - The following type aliases vanished: GTK_TYPE_FLAT_FIRST,
35 GTK_TYPE_FLAT_LAST, GTK_TYPE_STRUCTURED_FIRST, GTK_TYPE_STRUCTURED_LAST.
36 - The type macros GTK_TYPE_MAKE() and GTK_TYPE_SEQNO() vanished, use of
37 GTK_FUNDAMENTAL_TYPE() is discouraged. Instead, the corresponding GType
38 API should be used: G_TYPE_FUNDAMENTAL(), G_TYPE_DERIVE_ID(),
39 G_TYPE_BRANCH_SEQNO(). Note that the GLib type system doesn't build new
40 type ids based on a global incremental sequential number anymore, but
41 numbers new type ids sequentially per fundamental type branch.
42 - The following type functions vanished/were replaced:
43 Old Function Replacement
44 gtk_type_query() - being investigated -
45 gtk_type_set_varargs_type() -
46 gtk_type_get_varargs_type() -
47 gtk_type_check_object_cast() g_type_check_instance_cast()
48 gtk_type_check_class_cast() g_type_check_class_cast()
49 gtk_type_describe_tree() -
50 gtk_type_describe_heritage() -
52 gtk_type_children_types() g_type_children()
53 gtk_type_set_chunk_alloc() GTypeInfo.n_preallocs
54 gtk_type_register_enum() g_enum_register_static()
55 gtk_type_register_flags() g_flags_register_static()
56 gtk_type_parent_class() g_type_parent() / g_type_class_peek_parent()
57 Use of g_type_class_ref() / g_type_class_unref() and g_type_class_peek()
58 is recommended over usage of gtk_type_class().
59 Use of g_type_register_static() / g_type_register_dynamic() is recommended
60 over usage of gtk_type_unique().
62 * Object system changes:
63 GtkObject derives from GObject, it is not the basic object type anymore.
64 This imposes the following source incompatible changes:
65 - GtkObject has no klass field anymore, an object's class can be retrived
66 with the object's coresponding GTK_<OBJECT>_GET_CLASS (object) macro.
67 - GtkObjectClass has no type field anymore, a class's type can be retrived
68 with the GTK_CLASS_TYPE (class) macro.
69 - GtkObjectClass does not introduce the finalize() or shutdown() method
70 anymore. While shutdown() is intended for Gtk internal use only, finalize()
71 is required by a variety of object implementations. GObjectClass.finalize
72 should be overriden here, e.g.:
73 static void gtk_label_finalize (GObject *gobject)
75 GtkLabel *label = GTK_LABEL (gobject);
77 G_OBJECT_CLASS (parent_class)->finalize (object);
79 static void gtk_label_class_init (GtkLabelClass *class)
81 GObjectClass *gobject_class = G_OBJECT_CLASS (class);
83 gobject_class->finalize = gtk_label_finalize;
85 - the GtkObject::destroy signal can be emitted multiple times on an object
86 now. ::destroy implementations have to take this into account by
87 conditionalising freeing/release of assorted resources, e.g.:
90 g_free (object->foo_data);
91 object->foo_data = NULL;
93 Also, ::destroy implementations have to release peding object references,
94 that is, code portions commonly found in finalize implementations like:
95 if (object->adjustment)
97 gtk_object_unref (object->adjustment);
98 object->adjustment = NULL;
100 have to be moved into the ::destroy implementations.
101 This is required to break object reference cycles at destruction time.