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 * gtk_widget_shape_combine_mask() now keeps a reference count on the
27 mask pixmap that is passed in.
29 * Type system changes:
30 - GTK_TYPE_OBJECT is not a fundamental type anymore. Type checks of the
31 style (GTK_FUNDAMENTAL_TYPE (some_type) == GTK_TYPE_OBJECT)
32 will not work anymore. As a replacement, (GTK_TYPE_IS_OBJECT (some_type))
34 - The following types vanished: GTK_TYPE_ARGS, GTK_TYPE_CALLBACK,
35 GTK_TYPE_C_CALLBACK, GTK_TYPE_FOREIGN. The corresponding GtkArg
36 fields and field access macros are also gone.
37 - The following type aliases vanished: GTK_TYPE_FLAT_FIRST,
38 GTK_TYPE_FLAT_LAST, GTK_TYPE_STRUCTURED_FIRST, GTK_TYPE_STRUCTURED_LAST.
39 - The type macros GTK_TYPE_MAKE() and GTK_TYPE_SEQNO() vanished, use of
40 GTK_FUNDAMENTAL_TYPE() is discouraged. Instead, the corresponding GType
41 API should be used: G_TYPE_FUNDAMENTAL(), G_TYPE_DERIVE_ID(),
42 G_TYPE_BRANCH_SEQNO(). Note that the GLib type system doesn't build new
43 type ids based on a global incremental sequential number anymore, but
44 numbers new type ids sequentially per fundamental type branch.
45 - The following type functions vanished/were replaced:
46 Old Function Replacement
47 gtk_type_query() - being investigated -
48 gtk_type_set_varargs_type() -
49 gtk_type_get_varargs_type() -
50 gtk_type_check_object_cast() g_type_check_instance_cast()
51 gtk_type_check_class_cast() g_type_check_class_cast()
52 gtk_type_describe_tree() -
53 gtk_type_describe_heritage() -
55 gtk_type_children_types() g_type_children()
56 gtk_type_set_chunk_alloc() GTypeInfo.n_preallocs
57 gtk_type_register_enum() g_enum_register_static()
58 gtk_type_register_flags() g_flags_register_static()
59 gtk_type_parent_class() g_type_parent() / g_type_class_peek_parent()
60 Use of g_type_class_ref() / g_type_class_unref() and g_type_class_peek()
61 is recommended over usage of gtk_type_class().
62 Use of g_type_register_static() / g_type_register_dynamic() is recommended
63 over usage of gtk_type_unique().
65 * Object system changes:
66 GtkObject derives from GObject, so is not the basic object type anymore.
67 This imposes the following source incompatible changes:
68 - GtkObject has no klass field anymore, an object's class can be retrived
69 with the object's coresponding GTK_<OBJECT>_GET_CLASS (object) macro.
70 - GtkObjectClass has no type field anymore, a class's type can be retrived
71 with the GTK_CLASS_TYPE (class) macro.
72 - GtkObjectClass does not introduce the finalize() and shutdown() methods
73 anymore. While shutdown() is intended for GTK+ internal use only, finalize()
74 is required by a variety of object implementations. GObjectClass.finalize
75 should be overriden here, e.g.:
76 static void gtk_label_finalize (GObject *gobject)
78 GtkLabel *label = GTK_LABEL (gobject);
80 G_OBJECT_CLASS (parent_class)->finalize (object);
82 static void gtk_label_class_init (GtkLabelClass *class)
84 GObjectClass *gobject_class = G_OBJECT_CLASS (class);
86 gobject_class->finalize = gtk_label_finalize;
89 - the GtkObject::destroy signal can now be emitted multiple times on an object.
90 ::destroy implementations should check that make sure that they take this
91 into account, by checking to make sure that resources are there before
92 freeing them. For example:
95 g_free (object->foo_data);
96 object->foo_data = NULL;
99 Also, ::destroy implementations have to release object references that
100 the object holds. Code in finalize implementations such as:
101 if (object->adjustment)
103 gtk_object_unref (object->adjustment);
104 object->adjustment = NULL;
106 have to be moved into the ::destroy implementations. The reason for doing
107 this is that all object reference cycles should be broken at destruction
110 - Inserting and deleting text in GtkEntry though functions such
111 as gtk_entry_insert_text() now leave the cursor at its original
112 position in the text instead of moving it to the location of
113 the insertion/deletion.
115 - The ->label field of GtkFrame widgets has been removed. (As part of
116 a change to allow the arbitrary widgets in the title position.) The
117 text can now be retrieved with the new function gtk_frame_get_text().
119 - The 'font' and 'font_set' declarations in RC files are now ignored. There
120 is a new 'font_name' field that holds the string form of a Pango font
122 - A number of types in GDK have become subclasses of GObject. For the
123 most part, this should not break anyone's code. However, it's now
124 possible/encouraged to use g_object_ref()/g_object_unref() and other
125 GObject features with these GDK types. The converted types are:
126 GdkWindow, GdkDrawable, GdkPixmap, GdkImage, GdkGC, GdkDragContext,
129 - All drawables including pixmaps used to have a type tag, the
130 GdkWindowType enumeration, which included GDK_WINDOW_PIXMAP.
131 GdkWindowType is now a property of GdkWindow _only_, and there is
132 no GDK_WINDOW_PIXMAP. You can use the GDK_IS_PIXMAP() macro to see
133 if you have a pixmap, if you need to know that.
135 - GtkStyle and GtkRcStyle are now subclasses of GObject as well. This
136 requires fairly extensive changes to theme engines quite badly, but
137 shouldn't affect most other code.
139 - xthickness/ythickness have moved from GtkStyleClass to GtkStyle
140 (from class to instance). This gives themes a bit more flexibility
141 and is generally more of the Right Thing. You can trivially fix
142 your code with s/style->klass->xthickness/style->xthickness/g and
145 - If you were using private GDK types, they have been rearranged
146 significantly. You shouldn't use private types. ;-)
148 - The visual for a widget, and also the default visual is now derived
149 from the colormap for the widget and the default colormap.
150 gtk_widget_set_visual(), gtk_widget_set_defualt_visual(), gtk_widget_push_visual()
151 and gtk_widget_pop_visual() now do nothing. Since the visual always
152 had to match that of the colormap, it is safe to simply delete
153 all references to these functions.
155 - A number of functions in GDK have been renamed for consistency and
156 clarity. #defines to provide backwards compatibility have been
157 included, but can be disabled by defineing GDK_DISABLE_COMPAT_H.
159 #define gdk_draw_pixmap gdk_draw_drawable
160 #define gdk_draw_bitmap gdk_draw_drawable
162 #define gdk_window_get_size gdk_drawable_get_size
163 #define gdk_window_get_type gdk_window_get_window_type
164 #define gdk_window_get_colormap gdk_drawable_get_colormap
165 #define gdk_window_set_colormap gdk_drawable_set_colormap
166 #define gdk_window_get_visual gdk_drawable_get_visual
168 #define gdk_window_ref gdk_drawable_ref
169 #define gdk_window_unref gdk_drawable_unref
170 #define gdk_bitmap_ref gdk_drawable_ref
171 #define gdk_bitmap_unref gdk_drawable_unref
172 #define gdk_pixmap_ref gdk_drawable_ref
173 #define gdk_pixmap_unref gdk_drawable_unref
175 #define gdk_gc_destroy gdk_gc_unref
176 #define gdk_image_destroy gdk_image_unref
177 #define gdk_cursor_destroy gdk_cursor_unref
179 (Note that g_object_ref() and g_object_unref() may be used for all of
182 #define gdk_window_copy_area(drawable,gc,x,y,source_drawable,source_x,source_y,width,height) \
183 gdk_draw_pixmap(drawable,gc,source_drawable,source_x,source_y,x,y,width,height)
185 #define gdk_rgb_get_cmap gdk_rgb_get_colormap
187 - gdk_pixmap_foreign_new() no longer calls XFreePixmap() on the
188 pixmap when the GdkPixmap is finalized. This change corresponds
189 to the behavior of gdk_window_foreign_new(), and fixes a lot
190 of problems with code where the pixmap wasn't supposed to be
191 freed. If XFreePixmap() is needed, it can be done using the
192 destroy-notification facilities of g_object_set_data().
194 - GtkProgress/GtkProgressBar had serious problems in GTK 1.2.
196 - Only 3 or 4 functions are really needed for 95% of progress
197 interfaces; GtkProgress[Bar] had about 25 functions, and
198 didn't even include these 3 or 4.
199 - In activity mode, the API involves setting the adjustment
200 to any random value, just to have the side effect of
201 calling the progress bar update function - the adjustment
202 is totally ignored in activity mode
203 - You set the activity step as a pixel value, which means to
204 set the activity step you basically need to connect to
206 - There are ctree_set_expander_style()-functions, to randomly
207 change look-and-feel for no good reason
208 - The split between GtkProgress and GtkProgressBar makes no sense
211 This was a big wart on GTK and made people waste lots of time,
212 both learning and using the interface.
214 So, we have added what we feel is the correct API, and marked all the
215 rest deprecated. However, the changes are 100% backward-compatible and
216 should break no existing code.
218 The following 5 functions are the new programming interface and you
219 should consider changing your code to use them:
221 void gtk_progress_bar_pulse (GtkProgressBar *pbar);
222 void gtk_progress_bar_set_text (GtkProgressBar *pbar,
224 void gtk_progress_bar_set_fraction (GtkProgressBar *pbar,
227 void gtk_progress_bar_set_pulse_step (GtkProgressBar *pbar,
229 void gtk_progress_bar_set_orientation (GtkProgressBar *pbar,
230 GtkProgressBarOrientation orientation);