GTK Development Blog

This is the first development release leading up to GTK+ 2.16.

Overview of changes between 2.14.x and 2.15.0:

• GtkFileChooser
  • Optionally shows file sizes
  • Mounts volumes when necessary
  • Picks better mime icons
• GtkEntry
  • Can show icons at either side of the entry, which can be made clickable, drag sources, etc
  • Can show progress information
  • Picks the best available placeholder character for invisible entries unless it is explicitly set. See the invisible-char-set property
  • Input methods work again in invisible entries
  • Invisible entries can optionally display a caps-lock warning. This can be turned off with the caps-lock-warning property
• GtkStatusIcon
  • Uses an extension of the tray icon spec to negotiate RGBA support.
  • This is also supported by the GNOME panel. For details, see http://lists.freedesktop.org/archives/xdg/2008-September/009934.html
  • Supports scroll events, middle clicks and rich tooltips
• GtkLinkButton
  • Respects user-defined tooltips
  • Has a default url hook
• GtkBuilder
  • Can construct menus
  • Can associate accel groups with windows
  • Child properties can now be translatable, e.g. GtkAssistant::page-title
• GtkOrientable
  • A new interface implemented by all widgets that have horizontal and vertical variants
  • Printing support
  • Print-to-file can save to non-local files
  • Page rendering can be deferred to a thread to avoid blocking the mainloop
• GDK
  • GdkKeymap emits a state-changed signal when the Caps Lock state changes
• Newly deprecated functions:
  • gdk_window_get_toplevels(),
  • gtk_font_selection_dialog_get_apply_button(),
  • gtk_status_icon_set_tooltip(),
  • gtk_toolbar_set_orientation()
• Changes that are relevant for theme authors
  • The GtkMenu::arrow-placement style property allow more space efficient layout of scrolling menus
  • Submenu arrows can be scaled relative to the font size, with the
  • GtkMenuItem::arrow-scaling style property
  • Themes can set the GtkDialog::content-area-spacing style property to change the spacing between elements of the content area
  • The GtkEntry::state-hint style property can be used to make GTK+ pass the correct state when drawing the background of entries
  • The GtkEntry::prelight style property can be used to suppress prelighting of icons in entries on mouse-over
• Changes that are relevant for translators
  • GTK+ has been switched to use the two-argument C_() macro instead of Q_() for messages with context

Read the original announcement for more information including bug fixes and download locations.