4 This is GTK+ version 2.9.2. GTK+ is a multi-platform toolkit for
5 creating graphical user interfaces. Offering a complete set of widgets,
6 GTK+ is suitable for projects ranging from small one-off projects to
7 complete application suites.
9 GTK+ is free software and part of the GNU Project. However, the
10 licensing terms for GTK+, the GNU LGPL, allow it to be used by all
11 developers, including those developing proprietary software, without any
12 license fees or royalties.
14 The official ftp site is:
15 ftp://ftp.gtk.org/pub/gtk
17 The official web site is:
20 Information about mailing lists can be found at
21 http://www.gtk.org/mailinglists.html
26 See the file 'INSTALL'
28 Release notes for 2.10
29 ======================
31 * The hexadecimal Unicode input feature has been reworked. It no longer
32 blocks the use of the sixteen Ctrl-Shift-<hex digit> key sequences. Now
33 it only uses Ctrl-Shift-u.
35 * A memory leak in GtkStyle handling has been fixed. This may expose bugs
36 in third-party widgets which forget to call gtk_style_attach() in their
39 * Range widgets like GtkScrollbar now render their arrows insensitive
40 when the slider is at the end. Applications which react to arrow
41 clicks even if the slider is at the end may want to use the new
42 gtk_range_set_[upper/lower]_stepper_sensitivity() functions to
43 prevent the arrows from being rendered insensitive.
45 * GtkObject now uses the "floating reference" support in GObject.
46 GTK_OBJECT_IS_FLOATING() will still work, but direct checking
47 of the GTK_FLOATING flag will no longer detect the floating
48 reference. Details about floating references can be found in the docs:
49 http://developer.gnome.org/doc/API/2.0/gobject/gobject-The-Base-Object-Type.html#floating-ref
51 * Suffixes like (_F) are now stripped from labels when they are displayed
52 in toolbars. If this is not wanted, the feature can be suppressed by
53 inserting a Unicode control character, e.g ZWNJ.
55 * The pixbuf theme engine can now customize expanders (in GtkTreeView
56 and GtkExpander) and resize grips, using the new EXPANDER and
57 RESIZE_GRIP function values.
59 * Dialogs created by gtk_about_dialog_new no longer hide automatically
60 when the user clicks close. It is the applications responsibility to
61 hide or destroy the dialog.
63 * Several new signals have been added to GtkNotebook. Care has been taken
64 to choose signal names which do not collide with signals added by well-known
65 derived classes. The names which can no longer be used for signals in
66 objects derived from GtkNotebook are page-reordered, page-removed and
72 * GTK+ 2.6 supports clipboard persistency. To make use of this feature,
73 a clipboard manager following the specification at
74 http://www.freedesktop.org/wiki/Standards/clipboard-manager-spec
75 must be running. A sample implementation of such a clipboard manager
77 http://people.imendio.com/andersca/archives/clipboard-manager-0.3.tar.gz
78 Applications can use the function gdk_display_supports_clipboard_persistence()
79 to find out if clipboard persistence is available.
81 * Notification on clipboard ownership changes via GdkOwnerChange events
82 requires the XFIXES X extension. Applications can use the function
83 gdk_display_supports_selection_notification() to find out if ownerchip
84 change notification is available.
86 * The icon theme code in GTK+ 2.6 follows the freedesktop.org icon theme
87 specification. Setting the XDG_DATA_DIRS environtment variable may be
88 necessary if your icons aren't installed in the default location
91 * The icon theme code in GTK+ 2.6 can make use of mmap()able cache files
92 to avoid a lot of disk searching overhead. GTK+ includes a utility named
93 gtk-update-icon-cache to generate these cache files. For further details,
94 see the gtk-update-icon-cache man page or the GTK+ documentation.
96 * To reduce code size and improve efficiency, GTK+, when compiled
97 with the GNU toolchain, has separate internal and external entry
98 points for exported functions. The internal names, which begin with
99 IA__, may be seen when debugging a GTK+ program.
101 * The following functions have been deprecated in GTK+ 2.6:
102 gdk_pango_context_set_colormap
103 gtk_cell_renderer_editing_canceled
105 * The new GtkFileChooser widget emphasizes simplicity and thus does
106 not provide a navigation entry by default when opening files.
107 Experienced command line users will likely want to make heavy use of
108 the location dialog brought up by the Control-L key shortcut.
110 * The GTK+ libraries use an '_' prefix to indicate private symbols that
111 must not be used by applications. On some platforms, symbols beginning
112 with prefixes such as _gtk, _gdk, and _pango will be exported
113 from the library, on others not. In no case can applications
114 use these private symbols. In addition to that, GTK+ 2.6 makes several
115 symbols private which were not in any installed header files and
116 were never intended to be exported.
118 * The gdk_pixbuf_xlib library included in the contrib/ directory
119 and the framebuffer GDK backend included in the gdk/linux-fb directory
120 of GTK+ are provided on an as-is basis and have not been tested at all.
121 No guarantees about the degree of workingness or about future
122 compatibility are provided.
124 * On Unix, the assumption of GLib and GTK+ by default is that filenames on
125 the filesystem are encoded in UTF-8 rather than the encoding of the locale;
126 the GTK+ developers consider that having filenames whose interpretation
127 depends on the current locale is fundamentally a bad idea.
129 If you have filenames encoded in the encoding of your locale, then you
130 may want to set the G_FILENAME_ENCODING environment variable:
132 G_FILENAME_ENCODING=@locale
133 export G_FILENAME_ENCODING
135 (Earlier versions of GLib 2.x required a different environment variable
136 setting; G_BROKEN_FILENAMES=1 to achieve the same effect; this
137 is still supported, but G_FILENAME_ENCODING is preferred.)
138 Best integration of GTK+ 2.6 with the environment is achieved by
139 using a UTF-8 locale.
141 On Windows, filenames passed to GTK+ should always be in UTF-8, as
142 in GLib 2.6. This is different than in previous versions of GTK+
143 where the system codepage was used. As in GLib, for DLL ABI
144 stability, applications built against previous versions of GTK+ will
145 use entry points providing the old semantics.
147 When compiling against GTK+ 2.6, applications intended to be
148 portable to Windows must take the UTF-8 file name encoding into
149 consideration, and use the gstdio wrappers to access files whose
150 names have been constructed from strings returned from GTK+ or GLib.
155 Bugs should be reported to the GNOME bug tracking system.
156 (http://bugzilla.gnome.org, product gtk+.) You will need to create an
157 account for yourself.
159 In the bug report please include:
161 * Information about your system. For instance:
163 - What operating system and version
165 - For Linux, what version of the C library
167 And anything else you think is relevant.
169 * How to reproduce the bug.
171 If you can reproduce it with one of the tests or demos built with GTK+,
172 such as demos/gtk-demo/gtk-demo, that would be most convenient. Otherwise,
173 please include a short test program that exhibits the behavior. As a
174 last resort, you can also provide a pointer to a larger piece of software
175 that can be downloaded.
177 * If the bug was a crash, the exact text that was printed out when the
180 * Further information such as stack traces may be useful, but is not
181 necessary. If you do send a stack trace, and the error is an X error,
182 it will be more useful if the stacktrace is produced running the test
183 program with the --sync command line option.
188 Patches should also be submitted to bugzilla.gnome.org. If the patch
189 fixes an existing bug, add the patch as an attachment to that bug
192 Otherwise, enter a new bug report that describes the patch, and attach
193 the patch to that bug report.
195 Bug reports containing patches should include the PATCH keyword in their
196 keyword fields. If the patch adds to or changes the GTK+ programming
197 interface, the API keyword should also be included.
199 Patches should be in unified diff form. (The -u option to GNU diff.)