Ubuntu Wiki

Documentation :

• http://developer.gnome.org/gtk3/stable/gtk-migrating-2-to-3.html

• http://www.piware.de/2010/11/gtk-3-0gir-application-porting-successes-and-problems/

• http://python-gtk-3-tutorial.readthedocs.org/en/latest/

• http://nullege.com/codes/search/gi.repository.Gtk

• http://live.gnome.org/PyGObject/IntrospectionPorting

example : http://sourceforge.net/tracker/?func=detail&aid=3005736&group_id=156956&atid=801866

Phase 1

Pass GTK2 flags

Add this to debian/rules :

# GTK3 migration

CFLAGS+=-DGTK_DISABLE_SINGLE_INCLUDES

CFLAGS+=-DGDK_DISABLE_DEPRECATED -DGTK_DISABLE_DEPRECATED

CFLAGS+=-DGSEAL_ENABLE

CFLAGS+=-DGDK_PIXBUF_DISABLE_DEPRECATED

CFLAGS+=-DG_DISABLE_DEPRECATED

Phase 2

Prepare patch for the switch to GTK3 (see GNOME documentation)

• Replace GdkRegion by cairo_region_t

• Replace GdkPixmap by cairo surfaces

• Replace colormaps by visuals (GdkColormap)

• The GtkWidget::expose-event signal has been replaced by a new "draw" signal

• gtk_progress_bar_set_orientation() replaced
• "hscrollbar-policy" and "vscrollbar-policy" default changed

• GtkObject and ::destroy signal removed.

• gtk_statusbar_set_has_resize_grip() and gtk_statusbar_get_has_resize_grip() removed.

Packages state

Quick list of error and how to fix

Use if

#if GTK_CHECK_VERSION(X, X, X)

#else

#endif

‘GtkWidget’ has no member named ‘allocation’

GtkAllocation *allocation = g_new0 (GtkAllocation, 1);

gtk_widget_get_allocation(GTK_WIDGET(widget), allocation);

allocation->width

allocation->y

...

g_free (allocation);

‘GtkWidget’ has no member named ‘window’

gtk_widget_set_window(widget);

gtk_widget_get_window(widget);

implicit declaration of function ‘GDK_DISPLAY’

GDK_DISPLAY_XDISPLAY(gdk_display_get_default())

‘GtkWidget’ has no member named ‘requisition’

GtkRequisition requisition;

gtk_widget_get_requisition(GTK_WIDGET(widget), &requisition);

requisition.width;

requisition.height;

‘GtkWidget’ has no member named ‘style’

gtk_widget_get_style(widget);

‘GTK_CAN_FOCUS’ undeclared (first use in this function)

gtk_widget_set_can_focus(GtkWidget *widget, gboolean can_focus);

‘GTK_CAN_DEFAULT’ undeclared (first use in this function)

gtk_widget_set_can_default(GtkWidget *widget, gboolean can_default);

implicit declaration of function ‘GTK_WIDGET_DRAWABLE’

gtk_widget_is_drawable (GtkWidget *widget);

implicit declaration of function ‘GTK_WIDGET_HAS_FOCUS’

gtk_widget_has_focus (GtkWidget *widget);

GTK_PROGRES

GtkProgressBar and gtk_progress_bar_pulse for ativity mode