gtk2/docs/reference/gtk/tmpl/gtkrc.sgml

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Resource Files

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Routines for handling resource files

<!-- ##### SECTION Long_Description ##### -->
<para>
GTK+ provides resource file mechanism for configuring
various aspects of the operation of a GTK+ program
at runtime.
</para>

<refsect2><title>Default files</title>
<para>
An application can cause GTK+ to parse a specific RC
file by calling gtk_rc_parse(). In addition to this,
certain files will be read at the end of gtk_init().
Unless modified, the files looked for will be 
<filename>&lt;SYSCONFDIR&gt;/gtk-2.0/gtkrc</filename> 
and <filename>.gtkrc-2.0</filename> in the users home directory.
(<filename>&lt;SYSCONFDIR&gt;</filename> defaults to 
<filename>/usr/local/etc</filename>. It can be changed with the
<option>--prefix</option> or <option>--sysconfdir</option> options when 
configuring GTK+.) Note that although the filenames contain the version 
number 2.0, all 2.x versions of GTK+ look for these files.  
</para>
<para>
The set of these <firstterm>default</firstterm> files
can be retrieved with gtk_rc_get_default_files()
and modified with gtk_rc_add_default_file() and
gtk_rc_set_default_files().
Additionally, the <envar>GTK2_RC_FILES</envar> environment variable
can be set to a #G_SEARCHPATH_SEPARATOR_S-separated list of files
in order to overwrite the set of default files at runtime.
</para>
<para><anchor id="locale-specific-rc"/>
For each RC file, in addition to the file itself, GTK+ will look for 
a locale-specific file that will be parsed after the main file. 
For instance, if <envar>LANG</envar> is set to <literal>ja_JP.ujis</literal>,
when loading the default file <filename>~/.gtkrc</filename> then GTK+ looks 
for <filename>~/.gtkrc.ja_JP</filename> and <filename>~/.gtkrc.ja</filename>, 
and parses the first of those that exists.
</para>
</refsect2>

<refsect2><title>Pathnames and patterns</title>
<anchor id="gtkrc-pathnames-and-patterns"/>
<para>
A resource file defines a number of styles and key bindings and
attaches them to particular widgets. The attachment is done
by the <literal>widget</literal>, <literal>widget_class</literal>,
and <literal>class</literal> declarations. As an example
of such a statement:

<informalexample><programlisting>
widget "mywindow.*.GtkEntry" style "my-entry-class"
</programlisting></informalexample>

attaches the style <literal>"my-entry-class"</literal> to all 
widgets  whose <firstterm>widget path</firstterm> matches the 
<firstterm>pattern</firstterm> <literal>"mywindow.*.GtkEntry"</literal>. 
That is, all #GtkEntry widgets which are part of a #GtkWindow named 
<literal>"mywindow"</literal>.
</para>

<para>
The patterns here are given in the standard shell glob syntax. 
The <literal>"?"</literal> wildcard matches any character, while 
<literal>"*"</literal> matches zero or more of any character.  
The three types of matching are against the widget path, the
<firstterm>class path</firstterm> and the class hierarchy. Both the 
widget path and the class path consist of a <literal>"."</literal> 
separated list of all the parents of the widget and the widget itself 
from outermost to innermost. The difference is that in the widget path, 
the name assigned by gtk_widget_set_name() is used if present, otherwise 
the class name of the widget, while for the class path, the class name is 
always used.
</para>
<para>
Since GTK+ 2.10,<literal>widget_class</literal> paths can also contain
<literal>&lt;classname&gt;</literal> substrings, which are matching 
the class with the given name and any derived classes. For instance,
<informalexample><programlisting>
widget_class "*&lt;GtkMenuItem&gt;.GtkLabel" style "my-style"
</programlisting></informalexample>
will match #GtkLabel widgets which are contained in any kind of menu item.
</para>
<para>
So, if you have a #GtkEntry named <literal>"myentry"</literal>, inside of a 
horizontal box in a window named <literal>"mywindow"</literal>, then the
widget path is: <literal>"mywindow.GtkHBox.myentry"</literal>
while the class path is: <literal>"GtkWindow.GtkHBox.GtkEntry"</literal>.
</para>
<para>
Matching against class is a little different. The pattern match is done
against all class names in the widgets class hierarchy (not the layout 
hierarchy) in sequence, so the pattern:
<informalexample><programlisting>
class "GtkButton" style "my-style"
</programlisting></informalexample>
will match not just #GtkButton widgets, but also #GtkToggleButton and
#GtkCheckButton widgets, since those classes derive from #GtkButton.
</para>
<para>
Additionally, a priority can be specified for each pattern, and styles 
override other styles first by priority, then by pattern type and then 
by order of specification (later overrides earlier). The priorities 
that can be specified are (highest to lowest):
<simplelist>
<member><literal>highest</literal></member>
<member><literal>rc</literal></member>
<member><literal>theme</literal></member>
<member><literal>application</literal></member>
<member><literal>gtk</literal></member>
<member><literal>lowest</literal></member>
</simplelist>
<literal>rc</literal> is the default for styles
read from an RC file, <literal>theme</literal>
is the default for styles read from theme RC files,
<literal>application</literal> 
should be used for styles an application sets
up, and <literal>gtk</literal> is used for styles
that GTK+ creates internally.
</para>

</refsect2>

<refsect2>
<anchor id="optimizing-rc-style-matches"/>
<title>Optimizing RC Style Matches</title>
<para>
Everytime a widget is created and added to the layout hierarchy of a #GtkWindow
("anchored" to be exact), a list of matching RC styles out of all RC styles read
in so far is composed.
For this, every RC style is matched against the widgets class path,
the widgets name path and widgets inheritance hierarchy.
As a consequence, significant slowdown can be caused by utilization of many
RC styles and by using RC style patterns that are slow or complicated to match
against a given widget.
The following ordered list provides a number of advices (prioritized by 
effectiveness) to reduce the performance overhead associated with RC style 
matches:

<orderedlist>

  <listitem><para>
  Move RC styles for specific applications into RC files dedicated to those
  applications and parse application specific RC files only from
  applications that are affected by them.
  This reduces the overall amount of RC styles that have to be considered
  for a match across a group of applications.
  </para></listitem>

  <listitem><para>
  Merge multiple styles which use the same matching rule, for instance:
<informalexample><programlisting>
     style "Foo" { foo_content }
     class "X" style "Foo"
     style "Bar" { bar_content }
     class "X" style "Bar"
</programlisting></informalexample>
   is faster to match as:
<informalexample><programlisting>
     style "FooBar" { foo_content bar_content }
     class "X" style "FooBar"
</programlisting></informalexample>
  </para></listitem>

  <listitem><para>
  Use of wildcards should be avoided, this can reduce the individual RC style
  match to a single integer comparison in most cases.
  </para></listitem>

  <listitem><para>
  To avoid complex recursive matching, specification of full class names
  (for <literal>class</literal> matches) or full path names (for
  <literal>widget</literal> and <literal>widget_class</literal> matches)
  is to be preferred over shortened names
  containing <literal>"*"</literal> or <literal>"?"</literal>.
  </para></listitem>

  <listitem><para>
  If at all necessary, wildcards should only be used at the tail or head
  of a pattern. This reduces the match complexity to a string comparison
  per RC style.
  </para></listitem>

  <listitem><para>
  When using wildcards, use of <literal>"?"</literal> should be preferred
  over <literal>"*"</literal>. This can reduce the matching complexity from
  O(n^2) to O(n). For example <literal>"Gtk*Box"</literal> can be turned into
  <literal>"Gtk?Box"</literal> and will still match #GtkHBox and #GtkVBox.
  </para></listitem>

  <listitem><para>
  The use of <literal>"*"</literal> wildcards should be restricted as much
  as possible, because matching <literal>"A*B*C*RestString"</literal> can
  result in matching complexities of O(n^2) worst case.
  </para></listitem>
</orderedlist>

</para>
</refsect2>

<refsect2><title>Toplevel declarations</title>
<para>
An RC file is a text file which is composed of a sequence
of declarations. <literal>'#'</literal> characters delimit comments and
the portion of a line after a <literal>'#'</literal> is ignored when parsing
an RC file.
</para>

<para>
The possible toplevel declarations are:

<variablelist>
  <varlistentry>
    <term><literal>binding <replaceable>name</replaceable>
     { ... }</literal></term>
    <listitem>
      <para>Declares a binding set.</para>
    </listitem>
  </varlistentry>

  <varlistentry>
    <term><literal>class <replaceable>pattern</replaceable> 
          [ style | binding ][ : <replaceable>priority</replaceable> ]
          <replaceable>name</replaceable></literal></term>
    <listitem>
     <para>Specifies a style or binding set for a particular
     branch of the inheritance hierarchy.</para>
    </listitem>
  </varlistentry>

  <varlistentry>
    <term><literal>include <replaceable>filename</replaceable></literal></term>
    <listitem>
      <para>Parses another file at this point. If
        <replaceable>filename</replaceable> is not an absolute filename, 
        it is searched in the directories of the currently open RC files.
      </para>
      <para>GTK+ also tries to load a 
        <link linkend="locale-specific-rc">locale-specific variant</link> of
        the included file.
       </para>
    </listitem>
  </varlistentry>

  <varlistentry>
    <term><literal>module_path <replaceable>path</replaceable></literal></term>
    <listitem>
      <para>Sets a path (a list of directories separated
      by colons) that will be searched for theme engines referenced in
      RC files.</para>
    </listitem>
  </varlistentry>

  <varlistentry>
    <term><literal>pixmap_path <replaceable>path</replaceable></literal></term>
    <listitem>
      <para>Sets a path (a list of directories separated
      by colons) that will be searched for pixmaps referenced in
      RC files.</para>
    </listitem>
  </varlistentry>

  <varlistentry>
    <term><literal>im_module_file <replaceable>pathname</replaceable></literal></term>
    <listitem>
      <para>Sets the pathname for the IM modules file. Setting this from RC files
      is deprecated; you should use the environment variable <envar>GTK_IM_MODULE_FILE</envar>
      instead.</para>
    </listitem>
  </varlistentry>

  <varlistentry>
    <term><literal>style <replaceable>name</replaceable> [ =
    <replaceable>parent</replaceable> ] { ... }</literal></term>
    <listitem>
      <para>Declares a style.</para>
    </listitem>
  </varlistentry>

  <varlistentry>
    <term><literal>widget <replaceable>pattern</replaceable> 
          [ style | binding ][ : <replaceable>priority</replaceable> ]
          <replaceable>name</replaceable></literal></term>
    <listitem>
     <para>Specifies a style or binding set for a particular
     group of widgets by matching on the widget pathname.</para>
    </listitem>
  </varlistentry>

  <varlistentry>
    <term><literal>widget_class <replaceable>pattern</replaceable> 
          [ style | binding ][ : <replaceable>priority</replaceable> ]
          <replaceable>name</replaceable></literal></term>
    <listitem>
     <para>Specifies a style or binding set for a particular
     group of widgets by matching on the class pathname.</para>
    </listitem>
  </varlistentry>

  <varlistentry>
    <term><replaceable>setting</replaceable> = <replaceable>value</replaceable></term>
    <listitem>
      <para>Specifies a value for a <link linkend="GtkSettings">setting</link>.
        Note that settings in RC files are overwritten by system-wide settings 
        (which are managed by an XSettings manager on X11).</para>
    </listitem>
  </varlistentry>
</variablelist>
</para>
</refsect2>

<refsect2><title>Styles</title>
<para>
A RC style is specified by a <literal>style</literal> 
declaration in a RC file, and then bound to widgets
with a <literal>widget</literal>, <literal>widget_class</literal>,
or <literal>class</literal> declaration. All styles
applying to a particular widget are composited together
with <literal>widget</literal> declarations overriding
<literal>widget_class</literal> declarations which, in
turn, override <literal>class</literal> declarations.
Within each type of declaration, later declarations override
earlier ones.
</para>

<para>
Within a <literal>style</literal> declaration, the possible
elements are:

<variablelist>
  <varlistentry>
    <term><literal>bg[<replaceable>state</replaceable>] =
      <replaceable>color</replaceable></literal></term>
     <listitem>
       <para>
         Sets the color used for the background of most widgets.
       </para>
     </listitem>
  </varlistentry>
  <varlistentry>
    <term><literal>fg[<replaceable>state</replaceable>] =
      <replaceable>color</replaceable></literal></term>
     <listitem>
       <para>
         Sets the color used for the foreground of most widgets.
       </para>
     </listitem>
  </varlistentry>
  <varlistentry>
    <term><literal>base[<replaceable>state</replaceable>] =
      <replaceable>color</replaceable></literal></term>
     <listitem>
       <para>
         Sets the color used for the background of widgets displaying
         editable text. This color is used for the background
         of, among others, #GtkText, #GtkEntry, #GtkList, and #GtkCList.
       </para>
     </listitem>
  </varlistentry>
  <varlistentry>
    <term><literal>text[<replaceable>state</replaceable>] =
      <replaceable>color</replaceable></literal></term>
     <listitem>
       <para>
         Sets the color used for foreground of widgets using
         <literal>base</literal> for the background color.
       </para>
     </listitem>
  </varlistentry>
  <varlistentry>
    <term><literal>xthickness =
      <replaceable>number</replaceable></literal></term>
     <listitem>
       <para>
         Sets the xthickness, which is used for various horizontal padding
         values in GTK+.
       </para>
     </listitem>
  </varlistentry>
  <varlistentry>
    <term><literal>ythickness =
      <replaceable>number</replaceable></literal></term>
     <listitem>
       <para>
         Sets the ythickness, which is used for various vertical padding
         values in GTK+.
       </para>
     </listitem>
  </varlistentry>

  <varlistentry>
    <term><literal>bg_pixmap[<replaceable>state</replaceable>] =
      <replaceable>pixmap</replaceable></literal></term>
     <listitem>
       <para>
         Sets a background pixmap to be used in place of
         the <literal>bg</literal> color (or for #GtkText,
         in place of the <literal>base</literal> color. The special
         value <literal>"&lt;parent&gt;"</literal> may be used to indicate that the widget should
         use the same background pixmap as its parent. The special value
         <literal>"&lt;none&gt;"</literal> may be used to indicate no background pixmap.
       </para>
     </listitem>
  </varlistentry>
  <varlistentry>
    <term><literal>font = <replaceable>font</replaceable></literal></term>
     <listitem>
       <para>
         Starting with GTK+ 2.0, the "font" and "fontset"
         declarations are ignored; use "font_name" declarations instead.
       </para>
     </listitem>
  </varlistentry>
  <varlistentry>
    <term><literal>fontset = <replaceable>font</replaceable></literal></term>
     <listitem>
       <para>
         Starting with GTK+ 2.0, the "font" and "fontset"
         declarations are ignored; use "font_name" declarations instead.
       </para>
     </listitem>
  </varlistentry>
  <varlistentry>
    <term><literal>font_name = <replaceable>font</replaceable></literal></term>
     <listitem>
       <para>
         Sets the font for a widget. <replaceable>font</replaceable> must be 
         a Pango font name, e.g. <literal>"Sans Italic 10"</literal>. 
         For details about Pango font names, see 
         pango_font_description_from_string().
       </para>
     </listitem>   
  </varlistentry>
  <varlistentry>
    <term><literal>stock[<replaceable>"stock-id"</replaceable>] = { <replaceable>icon source specifications</replaceable> }</literal></term>
     <listitem>
       <para>
        Defines the icon for a stock item.
       </para>
     </listitem>
  </varlistentry>
  <varlistentry>
    <term><literal>color[<replaceable>"color-name"</replaceable>] = <replaceable>color specification</replaceable></literal></term>
     <listitem>
       <para>
        Since 2.10, this element can be used to defines symbolic colors. See below for
        the syntax of color specifications. 
       </para>
     </listitem>
  </varlistentry>
  <varlistentry>
    <term><literal>engine <replaceable>"engine"</replaceable> { <replaceable>engine-specific
settings</replaceable> }</literal></term>
     <listitem>
       <para>
        Defines the engine to be used when drawing with this style.
       </para>
     </listitem>
  </varlistentry>
  <varlistentry>
    <term><literal><replaceable>class</replaceable>::<replaceable>property</replaceable> = <replaceable>value</replaceable></literal></term>
     <listitem>
       <para>
        Sets a <link linkend="style-properties">style property</link> for a widget class.
       </para>
     </listitem>
  </varlistentry>
</variablelist>
</para>
<para>
The colors and background pixmaps are specified as a function of the
state of the widget. The states are:

<variablelist>
  <varlistentry>
    <term><literal>NORMAL</literal></term>
    <listitem>
      <para>
        A color used for a widget in its normal state.
      </para>
    </listitem>
  </varlistentry>
  <varlistentry>
    <term><literal>ACTIVE</literal></term>
    <listitem>
      <para>
        A variant of the <literal>NORMAL</literal> color used when the
        widget is in the %GTK_STATE_ACTIVE state, and also for
        the trough of a ScrollBar, tabs of a NoteBook
        other than the current tab and similar areas.
        Frequently, this should be a darker variant
        of the <literal>NORMAL</literal> color.
      </para>
    </listitem>
  </varlistentry>
  <varlistentry>
    <term><literal>PRELIGHT</literal></term>
    <listitem>
      <para>
        A color used for widgets in the %GTK_STATE_PRELIGHT state. This
        state is the used for Buttons and MenuItems
        that have the mouse cursor over them, and for 
        their children.
      </para>
    </listitem>
  </varlistentry>
  <varlistentry>
    <term><literal>SELECTED</literal></term>
    <listitem>
      <para>
        A color used to highlight data selected by the user.
        for instance, the selected items in a list widget, and the
        selection in an editable widget.
      </para>
    </listitem>
  </varlistentry>
  <varlistentry>
    <term><literal>INSENSITIVE</literal></term>
    <listitem>
      <para>
        A color used for the background of widgets that have
        been set insensitive with gtk_widget_set_sensitive().
      </para>
    </listitem>
  </varlistentry>
</variablelist>
</para>

<para><anchor id="color-format"/>
Colors can be specified as a string containing a color name (GTK+ knows
all names from the X color database <filename>/usr/lib/X11/rgb.txt</filename>),  
in one of the hexadecimal forms <literal>&num;rrrrggggbbbb</literal>,
<literal>&num;rrrgggbbb</literal>, <literal>&num;rrggbb</literal>,
or <literal>&num;rgb</literal>, where <literal>r</literal>,
<literal>g</literal> and <literal>b</literal> are
hex digits, or they can be specified as a triplet 
<literal>{ <replaceable>r</replaceable>, <replaceable>g</replaceable>,
<replaceable>b</replaceable>}</literal>, where <literal>r</literal>,
<literal>g</literal> and <literal>b</literal> are either integers in 
the range 0-65535 or floats in the range 0.0-1.0.
</para>
<para>
Since 2.10, colors can also be specified by refering to a symbolic color, as
follows: <literal>@<!-- -->color-name</literal>, or by using expressions to combine
colors. The following expressions are currently supported:
  <variablelist>
    <varlistentry>
      <term>mix (<replaceable>factor</replaceable>, <replaceable>color1</replaceable>, <replaceable>color2</replaceable>)</term>
      <listitem><para>
        Computes a new color by mixing <replaceable>color1</replaceable> and 
        <replaceable>color2</replaceable>. The <replaceable>factor</replaceable> 
        determines how close the new color is to <replaceable>color1</replaceable>. 
        A factor of 1.0 gives pure <replaceable>color1</replaceable>, a factor of 
        0.0 gives pure <replaceable>color2</replaceable>.  
      </para></listitem>        
    </varlistentry>

    <varlistentry>
      <term>shade (<replaceable>factor</replaceable>, <replaceable>color</replaceable>)</term>
      <listitem><para>
        Computes a lighter or darker variant of <replaceable>color</replaceable>. 
        A <replaceable>factor</replaceable> of 1.0 leaves the color unchanged, smaller 
        factors yield darker colors, larger factors yield lighter colors.
      </para></listitem>
    </varlistentry>

    <varlistentry>
      <term>lighter (<replaceable>color</replaceable>)</term>
      <listitem><para>
        This is an abbreviation for 
        <literal>shade (1.3, <replaceable>color</replaceable>)</literal>.
      </para></listitem>
    </varlistentry>

    <varlistentry>
      <term>darker (<replaceable>color</replaceable>)</term>
      <listitem><para>
        This is an abbreviation for 
        <literal>shade (0.7, <replaceable>color</replaceable>)</literal>.
      </para></listitem>
    </varlistentry>
  </variablelist>      
</para>
<para>
Here are some examples of color expressions:
<informalexample><programlisting>  
 mix (0.5, "red", "blue")
 shade (1.5, mix (0.3, "&num;0abbc0", { 0.3, 0.5, 0.9 }))
 lighter (@<!-- -->foreground)
</programlisting></informalexample>
</para>

<para>
In a <literal>stock</literal> definition, icon sources are specified as a
4-tuple of image filename or icon name, text direction, widget state, and size, in that
order.  Each icon source specifies an image filename or icon name to use with a given
direction, state, and size. Filenames are specified as a string such
as <literal>"itemltr.png"</literal>, while icon names (looked up
in the current icon theme), are specified with a leading
<literal>@</literal>, such as <literal>@"item-ltr"</literal>.
The <literal>*</literal> character can be used as a
wildcard, and if direction/state/size are omitted they default to
<literal>*</literal>. So for example, the following specifies different icons to
use for left-to-right and right-to-left languages:
<informalexample><programlisting>
stock["my-stock-item"] = 
{
  { "itemltr.png", LTR, *, * },
  { "itemrtl.png", RTL, *, * }
}
</programlisting></informalexample>
This could be abbreviated as follows:
<informalexample><programlisting>
stock["my-stock-item"] = 
{
  { "itemltr.png", LTR },
  { "itemrtl.png", RTL }
}
</programlisting></informalexample>
</para>

<para>
You can specify custom icons for specific sizes, as follows:
<informalexample><programlisting>
stock["my-stock-item"] = 
{
  { "itemmenusize.png", *, *, "gtk-menu" },
  { "itemtoolbarsize.png", *, *, "gtk-large-toolbar" }
  { "itemgeneric.png" } /* implicit *, *, * as a fallback */
}
</programlisting></informalexample>
The sizes that come with GTK+ itself are <literal>"gtk-menu"</literal>,
<literal>"gtk-small-toolbar"</literal>, <literal>"gtk-large-toolbar"</literal>,
<literal>"gtk-button"</literal>, <literal>"gtk-dialog"</literal>. Applications
can define other sizes.
</para>

<para>
It's also possible to use custom icons for a given state, for example:
<informalexample><programlisting>
stock["my-stock-item"] = 
{
  { "itemprelight.png", *, PRELIGHT },
  { "iteminsensitive.png", *, INSENSITIVE }, 
  { "itemgeneric.png" } /* implicit *, *, * as a fallback */
}
</programlisting></informalexample>
</para>

<para>
When selecting an icon source to use, GTK+ will consider text direction most
important, state second, and size third. It will select the best match based on
those criteria. If an attribute matches exactly (e.g. you specified
<literal>PRELIGHT</literal> or specified the size), GTK+ won't modify the image;
if the attribute matches with a wildcard, GTK+ will scale or modify the image to
match the state and size the user requested.
</para>

</refsect2>

<refsect2><title>Key bindings</title>
<para>
Key bindings allow the user to specify actions to be 
taken on particular key presses. The form of a binding
set declaration is:
</para>

<informalexample><programlisting>
binding <replaceable>name</replaceable> {
  bind <replaceable>key</replaceable> { 
    <replaceable>signalname</replaceable> (<replaceable>param</replaceable>, ...)
    ...
  }
  ...
}
</programlisting></informalexample>

<para>
<replaceable>key</replaceable> is a string consisting of a 
series of modifiers followed by the name of a key. The
modifiers can be:
<simplelist>
<member><literal>&lt;alt&gt;</literal></member>
<member><literal>&lt;ctl&gt;</literal></member>
<member><literal>&lt;control&gt;</literal></member>
<member><literal>&lt;meta&gt;</literal></member>
<member><literal>&lt;hyper&gt;</literal></member>
<member><literal>&lt;super&gt;</literal></member>
<member><literal>&lt;mod1&gt;</literal></member>
<member><literal>&lt;mod2&gt;</literal></member>
<member><literal>&lt;mod3&gt;</literal></member>
<member><literal>&lt;mod4&gt;</literal></member>
<member><literal>&lt;mod5&gt;</literal></member>
<member><literal>&lt;release&gt;</literal></member>
<member><literal>&lt;shft&gt;</literal></member>
<member><literal>&lt;shift&gt;</literal></member>
</simplelist>
<literal>&lt;shft&gt;</literal> is an alias for 
<literal>&lt;shift&gt;</literal>,
<literal>&lt;ctl&gt;</literal> is an alias for 
<literal>&lt;control&gt;</literal>,
 and 
<literal>&lt;alt&gt;</literal> is an alias for
<literal>&lt;mod1&gt;</literal>.
</para>

<para>
The action that is bound to the key is a sequence
of signal names (strings) followed by parameters for 
each signal. The signals must be action signals.
(See g_signal_new()). Each parameter can be
a float, integer, string, or unquoted string
representing an enumeration value. The types of
the parameters specified must match the types of the 
parameters of the signal.
</para>

<para>
Binding sets are connected to widgets in the same manner as styles, 
with one difference: Binding sets override other binding sets first 
by pattern type, then by priority and then by order of specification.
The priorities that can be specified and their default values are the 
same as for styles.
</para>
</refsect2>

<!-- ##### SECTION See_Also ##### -->
<para>

</para>

<!-- ##### SECTION Stability_Level ##### -->


<!-- ##### STRUCT GtkRcStyle ##### -->
<para>
The #GtkRcStyle structure is used to represent a set
of information about the appearance of a widget.
This can later be composited together with other
#GtkRcStyle structures to form a #GtkStyle.
</para>

@name: 
@bg_pixmap_name: 
@font_desc: 
@color_flags: 
@fg: 
@bg: 
@text: 
@base: 
@xthickness: 
@ythickness: 

<!-- ##### ENUM GtkRcFlags ##### -->
<para>
The #GtkRcFlags enumeration is used as a bitmask
to specify which fields of a #GtkRcStyle have been
set for each state.
</para>

@GTK_RC_FG: If present, the foreground color has been set for this state.
@GTK_RC_BG: If present, the background color has been set for this state.
@GTK_RC_TEXT: If present, the text color has been set for this state.
@GTK_RC_BASE: If present, the base color has been set for this state.

<!-- ##### ENUM GtkRcTokenType ##### -->
<para>
The #GtkRcTokenType enumeration represents the tokens
in the RC file. It is exposed so that theme engines
can reuse these tokens when parsing the theme-engine
specific portions of a RC file.
</para>

@GTK_RC_TOKEN_INVALID: 
@GTK_RC_TOKEN_INCLUDE: 
@GTK_RC_TOKEN_NORMAL: 
@GTK_RC_TOKEN_ACTIVE: 
@GTK_RC_TOKEN_PRELIGHT: 
@GTK_RC_TOKEN_SELECTED: 
@GTK_RC_TOKEN_INSENSITIVE: 
@GTK_RC_TOKEN_FG: 
@GTK_RC_TOKEN_BG: 
@GTK_RC_TOKEN_TEXT: 
@GTK_RC_TOKEN_BASE: 
@GTK_RC_TOKEN_XTHICKNESS: 
@GTK_RC_TOKEN_YTHICKNESS: 
@GTK_RC_TOKEN_FONT: 
@GTK_RC_TOKEN_FONTSET: 
@GTK_RC_TOKEN_FONT_NAME: 
@GTK_RC_TOKEN_BG_PIXMAP: 
@GTK_RC_TOKEN_PIXMAP_PATH: 
@GTK_RC_TOKEN_STYLE: 
@GTK_RC_TOKEN_BINDING: 
@GTK_RC_TOKEN_BIND: 
@GTK_RC_TOKEN_WIDGET: 
@GTK_RC_TOKEN_WIDGET_CLASS: 
@GTK_RC_TOKEN_CLASS: 
@GTK_RC_TOKEN_LOWEST: 
@GTK_RC_TOKEN_GTK: 
@GTK_RC_TOKEN_APPLICATION: 
@GTK_RC_TOKEN_THEME: 
@GTK_RC_TOKEN_RC: 
@GTK_RC_TOKEN_HIGHEST: 
@GTK_RC_TOKEN_ENGINE: 
@GTK_RC_TOKEN_MODULE_PATH: 
@GTK_RC_TOKEN_IM_MODULE_PATH: 
@GTK_RC_TOKEN_IM_MODULE_FILE: 
@GTK_RC_TOKEN_STOCK: 
@GTK_RC_TOKEN_LTR: 
@GTK_RC_TOKEN_RTL: 
@GTK_RC_TOKEN_COLOR: 
@GTK_RC_TOKEN_UNBIND: 
@GTK_RC_TOKEN_LAST: 

<!-- ##### FUNCTION gtk_rc_scanner_new ##### -->
<para>

</para>

@Returns: 


<!-- ##### FUNCTION gtk_rc_get_style ##### -->
<para>
</para>

@widget: 
@Returns: 


<!-- ##### FUNCTION gtk_rc_get_style_by_paths ##### -->
<para>

</para>

@settings: 
@widget_path: 
@class_path: 
@type: 
@Returns: 


<!-- ##### FUNCTION gtk_rc_add_widget_name_style ##### -->
<para>
Adds a #GtkRcStyle that will be looked up by a match against
the widget's pathname. This is equivalent to a:
 <literal>widget PATTERN style STYLE</literal>
statement in a RC file.
</para>

@rc_style: the #GtkRcStyle to use for widgets matching @pattern
@pattern: the pattern
@Deprecated: Use gtk_rc_parse_string() with a suitable string instead.


<!-- ##### FUNCTION gtk_rc_add_widget_class_style ##### -->
<para>
Adds a #GtkRcStyle that will be looked up by a match against
the widget's class pathname. This is equivalent to a:
<literal>widget_class PATTERN style STYLE</literal>
statement in a RC file.
</para>

@rc_style: the #GtkRcStyle to use for widgets matching @pattern
@pattern: the pattern
@Deprecated: Use gtk_rc_parse_string() with a suitable string instead.


<!-- ##### FUNCTION gtk_rc_add_class_style ##### -->
<para>
Adds a #GtkRcStyle that will be looked up by a matching against
the class hierarchy of the widget. This is equivalent to a:
<literal>class PATTERN style STYLE</literal>
statement in a RC file.
</para>

@rc_style: the #GtkRcStyle to use for widgets deriving from @pattern
@pattern: the pattern
@Deprecated: Use gtk_rc_parse_string() with a suitable string instead.


<!-- ##### FUNCTION gtk_rc_parse ##### -->
<para>
Parses a given resource file.
</para>

@filename: the filename of a file to parse. If @filename is not absolute, it
  is searched in the current directory.


<!-- ##### FUNCTION gtk_rc_parse_string ##### -->
<para>
Parses resource information directly from a string.
</para>

@rc_string: a string to parse.


<!-- ##### FUNCTION gtk_rc_reparse_all ##### -->
<para>
</para>

@Returns: 


<!-- ##### FUNCTION gtk_rc_reparse_all_for_settings ##### -->
<para>

</para>

@settings: 
@force_load: 
@Returns: 


<!-- ##### FUNCTION gtk_rc_reset_styles ##### -->
<para>

</para>

@settings: 


<!-- ##### FUNCTION gtk_rc_add_default_file ##### -->
<para>
</para>

@filename: 


<!-- ##### FUNCTION gtk_rc_get_default_files ##### -->
<para>
</para>

@Returns: 


<!-- ##### FUNCTION gtk_rc_set_default_files ##### -->
<para>
</para>

@filenames: 


<!-- ##### FUNCTION gtk_rc_parse_color ##### -->
<para>

</para>

@scanner: 
@color: 
@Returns: 


<!-- ##### FUNCTION gtk_rc_parse_color_full ##### -->
<para>

</para>

@scanner: 
@style: 
@color: 
@Returns: 


<!-- ##### FUNCTION gtk_rc_parse_state ##### -->
<para>
Parses a #GtkStateType variable from the format expected
in a RC file.
</para>

@scanner: a #GtkScanner (must be initialized for parsing an RC file)
@state: A pointer to a #GtkStateType variable in which to
store the result.
@Returns: %G_TOKEN_NONE if parsing succeeded, otherwise the token
that was expected but not found.


<!-- ##### FUNCTION gtk_rc_parse_priority ##### -->
<para>
Parses a #GtkPathPriorityType variable from the format expected
in a RC file.
</para>

@scanner: a #GtkScanner (must be initialized for parsing an RC file)
@priority: A pointer to #GtkPathPriorityType variable in which
to store the result.
@Returns: %G_TOKEN_NONE if parsing succeeded, otherwise the token
that was expected but not found.


<!-- ##### FUNCTION gtk_rc_find_module_in_path ##### -->
<para>
</para>

@module_file: The name of the module to search for.
@Returns: 


<!-- ##### FUNCTION gtk_rc_find_pixmap_in_path ##### -->
<para>
</para>

@settings: 
@scanner: a #GtkScanner. Used for printing out warning messages
if the file is not found.
@pixmap_file: The name of the file to search for.
@Returns: The filename, if found (must be freed with g_free()),
otherwise %NULL.


<!-- ##### FUNCTION gtk_rc_get_module_dir ##### -->
<para>
</para>

@Returns: 


<!-- ##### FUNCTION gtk_rc_get_im_module_path ##### -->
<para>

</para>

@Returns: 


<!-- ##### FUNCTION gtk_rc_get_im_module_file ##### -->
<para>

</para>

@Returns: 


<!-- ##### FUNCTION gtk_rc_get_theme_dir ##### -->
<para>
Returns the standard directory in which themes should
be installed. (GTK+ does not actually use this directory
itself.)
</para>

@Returns: The directory (must be freed with g_free()).


<!-- ##### FUNCTION gtk_rc_style_new ##### -->
<para>
Creates a new #GtkRcStyle with no fields set and
a reference count of 1.
</para>

@Returns: the newly-created #GtkRcStyle


<!-- ##### FUNCTION gtk_rc_style_copy ##### -->
<para>

</para>

@orig: 
@Returns: 


<!-- ##### FUNCTION gtk_rc_style_ref ##### -->
<para>
Increments the reference count of a #GtkRcStyle.
</para>

@rc_style: a #GtkRcStyle
@Deprecated: Use g_object_ref() instead


<!-- ##### FUNCTION gtk_rc_style_unref ##### -->
<para>
Decrements the reference count of a #GtkRcStyle and
frees if the result is 0.
</para>

@rc_style: a #GtkRcStyle
@Deprecated: Use g_object_unref() instead