A GTK+ widget is specified by a widget name and a widget class. The widget name refers to a specific widget (e.g., ‘emacs-menuitem’), while the widget class refers to a collection of similar widgets (e.g., ‘GtkMenuItem’). A widget always has a class, but need not have a name.
Absolute names are sequences of widget names or widget
classes, corresponding to hierarchies of widgets embedded within
other widgets. For example, if a
box, which in turn contains
menubar, the absolute class name
of the menu-bar widget is
its absolute widget name is
GTK+ resource files can contain two types of commands for specifying widget appearances:
specifies a style for widgets based on the class name, or just the class.
specifies a style for widgets based on the class name.
See the previous subsection for examples of using the
widget_class command is used similarly. Note that
the widget name/class and the style must be enclosed in double-quotes,
and these commands must be at the top level in the GTK+ resource file.
As previously noted, you may specify a widget name or class with shell wildcard syntax: ‘*’ matches zero or more characters and ‘?’ matches one character. This example assigns a style to all widgets:
widget "*" style "my_style"