Incompatible Changes from GTK+-1.2 to GTK+-1.4: * The gdk_time* functions have been removed. This functionality has been unused since the main loop was moved into GLib prior to 1.2. * The signature for GtkPrintFunc (used for gtk_item_factory_dump_items) has been changed to take a 'const gchar *' instead of 'gchar *', to match what we do for glib, and other similar cases. * The detail arguments in the GtkStyleClass structure are now 'const gchar *'. * gtk_paned_set_gutter_size() has been removed, since the small handle tab has been changed to include the entire area previously occupied by the gutter. * GDK no longer selects OwnerGrabButtonMask for button presses. This means that the automatic grab that occurs when the user presses a button will have owner_events = FALSE, so all events are redirected to the grab window, even events that would normally go to other windows of the window's owner. * GtkColorSelectionDialog has now been moved into it's own set of files, gtkcolorseldialog.c and gtkcolorseldialog.h. * gtk_widget_shape_combine_mask() now keeps a reference count on the mask pixmap that is passed in. * Type system changes: - GTK_TYPE_OBJECT is not a fundamental type anymore. Type checks of the style (GTK_FUNDAMENTAL_TYPE (some_type) == GTK_TYPE_OBJECT) will not work anymore. As a replacement, (GTK_TYPE_IS_OBJECT (some_type)) can be used now. - The following types vanished: GTK_TYPE_ARGS, GTK_TYPE_CALLBACK, GTK_TYPE_C_CALLBACK, GTK_TYPE_FOREIGN. The corresponding GtkArg fields and field access macros are also gone. - The following type aliases vanished: GTK_TYPE_FLAT_FIRST, GTK_TYPE_FLAT_LAST, GTK_TYPE_STRUCTURED_FIRST, GTK_TYPE_STRUCTURED_LAST. - The type macros GTK_TYPE_MAKE() and GTK_TYPE_SEQNO() vanished, use of GTK_FUNDAMENTAL_TYPE() is discouraged. Instead, the corresponding GType API should be used: G_TYPE_FUNDAMENTAL(), G_TYPE_DERIVE_ID(), G_TYPE_BRANCH_SEQNO(). Note that the GLib type system doesn't build new type ids based on a global incremental sequential number anymore, but numbers new type ids sequentially per fundamental type branch. - The following type functions vanished/were replaced: Old Function Replacement gtk_type_query() - being investigated - gtk_type_set_varargs_type() - gtk_type_get_varargs_type() - gtk_type_check_object_cast() g_type_check_instance_cast() gtk_type_check_class_cast() g_type_check_class_cast() gtk_type_describe_tree() - gtk_type_describe_heritage() - gtk_type_free() - gtk_type_children_types() g_type_children() gtk_type_set_chunk_alloc() GTypeInfo.n_preallocs gtk_type_register_enum() g_enum_register_static() gtk_type_register_flags() g_flags_register_static() gtk_type_parent_class() g_type_parent() / g_type_class_peek_parent() Use of g_type_class_ref() / g_type_class_unref() and g_type_class_peek() is recommended over usage of gtk_type_class(). Use of g_type_register_static() / g_type_register_dynamic() is recommended over usage of gtk_type_unique(). * Object system changes: GtkObject derives from GObject, so is not the basic object type anymore. This imposes the following source incompatible changes: - GtkObject has no klass field anymore, an object's class can be retrived with the object's coresponding GTK__GET_CLASS (object) macro. - GtkObjectClass has no type field anymore, a class's type can be retrived with the GTK_CLASS_TYPE (class) macro. - GtkObjectClass does not introduce the finalize() and shutdown() methods anymore. While shutdown() is intended for GTK+ internal use only, finalize() is required by a variety of object implementations. GObjectClass.finalize should be overriden here, e.g.: static void gtk_label_finalize (GObject *gobject) { GtkLabel *label = GTK_LABEL (gobject); G_OBJECT_CLASS (parent_class)->finalize (object); } static void gtk_label_class_init (GtkLabelClass *class) { GObjectClass *gobject_class = G_OBJECT_CLASS (class); gobject_class->finalize = gtk_label_finalize; } - the GtkObject::destroy signal can now be emitted multiple times on an object. ::destroy implementations should check that make sure that they take this into account, by checking to make sure that resources are there before freeing them. For example: if (object->foo_data) { g_free (object->foo_data); object->foo_data = NULL; } Also, ::destroy implementations have to release object references that the object holds. Code in finalize implementations such as: if (object->adjustment) { gtk_object_unref (object->adjustment); object->adjustment = NULL; } have to be moved into the ::destroy implementations. The reason for doing this is that all object reference cycles should be broken at destruction time. - Inserting and deleting text in GtkEntry though functions such as gtk_entry_insert_text() now leave the cursor at its original position in the text instead of moving it to the location of the insertion/deletion. - The ->label field of GtkFrame widgets has been removed. (As part of a change to allow the arbitrary widgets in the title position.) The text can now be retrieved with the new function gtk_frame_get_text(). - The 'font' and 'font_set' declarations in RC files are now ignored. There is a new 'font_name' field that holds the string form of a Pango font - 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 requires fairly extensive changes to 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. - If you were using private GDK types, they have been rearranged significantly. You shouldn't use private types. ;-) - The visual for a widget, and also the default visual is now derived from the colormap for the widget and the default colormap. gtk_widget_set_visual(), gtk_widget_set_default_visual(), gtk_widget_push_visual() and gtk_widget_pop_visual() now do nothing. Since the visual always had to match that of the colormap, it is safe to simply delete all references to these functions. - A number of functions in GDK have been renamed for consistency and clarity. #defines to provide backwards compatibility have been included, but can be disabled by defineing GDK_DISABLE_COMPAT_H. #define gdk_draw_pixmap gdk_draw_drawable #define gdk_draw_bitmap gdk_draw_drawable #define gdk_window_get_size gdk_drawable_get_size #define gdk_window_get_type gdk_window_get_window_type #define gdk_window_get_colormap gdk_drawable_get_colormap #define gdk_window_set_colormap gdk_drawable_set_colormap #define gdk_window_get_visual gdk_drawable_get_visual #define gdk_window_ref gdk_drawable_ref #define gdk_window_unref gdk_drawable_unref #define gdk_bitmap_ref gdk_drawable_ref #define gdk_bitmap_unref gdk_drawable_unref #define gdk_pixmap_ref gdk_drawable_ref #define gdk_pixmap_unref gdk_drawable_unref #define gdk_gc_destroy gdk_gc_unref #define gdk_image_destroy gdk_image_unref #define gdk_cursor_destroy gdk_cursor_unref (Note that g_object_ref() and g_object_unref() may be used for all of the above.) #define gdk_window_copy_area(drawable,gc,x,y,source_drawable,source_x,source_y,width,height) \ gdk_draw_pixmap(drawable,gc,source_drawable,source_x,source_y,x,y,width,height) #define gdk_rgb_get_cmap gdk_rgb_get_colormap - gdk_pixmap_foreign_new() no longer calls XFreePixmap() on the pixmap when the GdkPixmap is finalized. This change corresponds to the behavior of gdk_window_foreign_new(), and fixes a lot of problems with code where the pixmap wasn't supposed to be freed. If XFreePixmap() is needed, it can be done using the destroy-notification facilities of g_object_set_data(). - GtkProgress/GtkProgressBar had serious problems in GTK 1.2. - Only 3 or 4 functions are really needed for 95% of progress interfaces; GtkProgress[Bar] had about 25 functions, and didn't even include these 3 or 4. - In activity mode, the API involves setting the adjustment to any random value, just to have the side effect of calling the progress bar update function - the adjustment is totally ignored in activity mode - You set the activity step as a pixel value, which means to set the activity step you basically need to connect to size_allocate - There are ctree_set_expander_style()-functions, to randomly change look-and-feel for no good reason - The split between GtkProgress and GtkProgressBar makes no sense to me whatsoever. This was a big wart on GTK and made people waste lots of time, both learning and using the interface. So, we have added what we feel is the correct API, and marked all the rest deprecated. However, the changes are 100% backward-compatible and should break no existing code. The following 5 functions are the new programming interface and you should consider changing your code to use them: void gtk_progress_bar_pulse (GtkProgressBar *pbar); void gtk_progress_bar_set_text (GtkProgressBar *pbar, const gchar *text); void gtk_progress_bar_set_fraction (GtkProgressBar *pbar, gfloat fraction); void gtk_progress_bar_set_pulse_step (GtkProgressBar *pbar, gfloat fraction); void gtk_progress_bar_set_orientation (GtkProgressBar *pbar, GtkProgressBarOrientation orientation);