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GTK+ 3 Reference Manual | ![]() |
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Top | Description |
#include <gtk/gtk.h> GtkSettings; GtkSettingsValue; GtkSettings* gtk_settings_get_default (void
); GtkSettings* gtk_settings_get_for_screen (GdkScreen *screen
); void gtk_settings_install_property (GParamSpec *pspec
); void gtk_settings_install_property_parser (GParamSpec *pspec
,GtkRcPropertyParser parser
); gboolean gtk_rc_property_parse_color (const GParamSpec *pspec
,const GString *gstring
,GValue *property_value
); gboolean gtk_rc_property_parse_enum (const GParamSpec *pspec
,const GString *gstring
,GValue *property_value
); gboolean gtk_rc_property_parse_flags (const GParamSpec *pspec
,const GString *gstring
,GValue *property_value
); gboolean gtk_rc_property_parse_requisition (const GParamSpec *pspec
,const GString *gstring
,GValue *property_value
); gboolean gtk_rc_property_parse_border (const GParamSpec *pspec
,const GString *gstring
,GValue *property_value
); void gtk_settings_set_property_value (GtkSettings *settings
,const gchar *name
,const GtkSettingsValue *svalue
); void gtk_settings_set_string_property (GtkSettings *settings
,const gchar *name
,const gchar *v_string
,const gchar *origin
); void gtk_settings_set_long_property (GtkSettings *settings
,const gchar *name
,glong v_long
,const gchar *origin
); void gtk_settings_set_double_property (GtkSettings *settings
,const gchar *name
,gdouble v_double
,const gchar *origin
);
GtkSettings provide a mechanism to share global settings between applications.
On the X window system, this sharing is realized by an
XSettings
manager that is usually part of the desktop environment, along with
utilities that let the user change these settings. In the absence of
an Xsettings manager, GTK+ reads default values for settings from
settings.ini
files in
/etc/gtk-3.0
and $XDG_CONFIG_HOME/gtk-3.0
. These files must be valid key files (see GKeyFile), and have
a section called Settings. Themes can also provide default values
for settings by installing a settings.ini
file
next to their gtk.css
file.
Applications can override system-wide settings with
gtk_settings_set_string_property()
, gtk_settings_set_long_property()
,
etc. This should be restricted to special cases though; GtkSettings are
not meant as an application configuration facility. When doing so, you
need to be aware that settings that are specific to individual widgets
may not be available before the widget type has been realized at least
once. The following example demonstrates a way to do this:
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gtk_init (&argc, &argv); /* make sure the type is realized */ g_type_class_unref (g_type_class_ref (GTK_TYPE_IMAGE_MENU_ITEM)); g_object_set (gtk_settings_get_default (), "gtk-menu-images", FALSE, NULL); |
There is one GtkSettings instance per screen. It can be obtained with
gtk_settings_get_for_screen()
, but in many cases, it is more convenient
to use gtk_widget_get_settings()
. gtk_settings_get_default()
returns the
GtkSettings instance for the default screen.
typedef struct { /* origin should be something like "filename:linenumber" for rc files, * or e.g. "XProperty" for other sources */ gchar *origin; /* valid types are LONG, DOUBLE and STRING corresponding to the token parsed, * or a GSTRING holding an unparsed statement */ GValue value; } GtkSettingsValue;
GtkSettings* gtk_settings_get_default (void
);
Gets the GtkSettings object for the default GDK screen, creating
it if necessary. See gtk_settings_get_for_screen()
.
Returns : |
a GtkSettings object. If there is no default
screen, then returns NULL . [transfer none]
|
GtkSettings* gtk_settings_get_for_screen (GdkScreen *screen
);
Gets the GtkSettings object for screen
, creating it if necessary.
|
a GdkScreen. |
Returns : |
a GtkSettings object. [transfer none] |
Since 2.2
void gtk_settings_install_property_parser (GParamSpec *pspec
,GtkRcPropertyParser parser
);
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. [scope call] |
gboolean gtk_rc_property_parse_color (const GParamSpec *pspec
,const GString *gstring
,GValue *property_value
);
A GtkRcPropertyParser for use with gtk_settings_install_property_parser()
or gtk_widget_class_install_style_property_parser()
which parses a
color given either by its name or in the form
{ red, green, blue }
where red
, green
and
blue
are integers between 0 and 65535 or floating-point numbers
between 0 and 1.
gboolean gtk_rc_property_parse_enum (const GParamSpec *pspec
,const GString *gstring
,GValue *property_value
);
A GtkRcPropertyParser for use with gtk_settings_install_property_parser()
or gtk_widget_class_install_style_property_parser()
which parses a single
enumeration value.
The enumeration value can be specified by its name, its nickname or its numeric value. For consistency with flags parsing, the value may be surrounded by parentheses.
|
a GParamSpec |
|
the GString to be parsed |
|
a GValue which must hold enum values. |
Returns : |
TRUE if gstring could be parsed and property_value
has been set to the resulting GEnumValue.
|
gboolean gtk_rc_property_parse_flags (const GParamSpec *pspec
,const GString *gstring
,GValue *property_value
);
A GtkRcPropertyParser for use with gtk_settings_install_property_parser()
or gtk_widget_class_install_style_property_parser()
which parses flags.
Flags can be specified by their name, their nickname or
numerically. Multiple flags can be specified in the form
"( flag1 | flag2 | ... )"
.
|
a GParamSpec |
|
the GString to be parsed |
|
a GValue which must hold flags values. |
Returns : |
TRUE if gstring could be parsed and property_value
has been set to the resulting flags value.
|
gboolean gtk_rc_property_parse_requisition (const GParamSpec *pspec
,const GString *gstring
,GValue *property_value
);
A GtkRcPropertyParser for use with gtk_settings_install_property_parser()
or gtk_widget_class_install_style_property_parser()
which parses a
requisition in the form
"{ width, height }"
for integers width
and height
.
|
a GParamSpec |
|
the GString to be parsed |
|
a GValue which must hold boxed values. |
Returns : |
TRUE if gstring could be parsed and property_value
has been set to the resulting GtkRequisition.
|
gboolean gtk_rc_property_parse_border (const GParamSpec *pspec
,const GString *gstring
,GValue *property_value
);
A GtkRcPropertyParser for use with gtk_settings_install_property_parser()
or gtk_widget_class_install_style_property_parser()
which parses
borders in the form
"{ left, right, top, bottom }"
for integers
left
, right
, top
and bottom
.
|
a GParamSpec |
|
the GString to be parsed |
|
a GValue which must hold boxed values. |
Returns : |
TRUE if gstring could be parsed and property_value
has been set to the resulting GtkBorder.
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void gtk_settings_set_property_value (GtkSettings *settings
,const gchar *name
,const GtkSettingsValue *svalue
);
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void gtk_settings_set_string_property (GtkSettings *settings
,const gchar *name
,const gchar *v_string
,const gchar *origin
);
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void gtk_settings_set_long_property (GtkSettings *settings
,const gchar *name
,glong v_long
,const gchar *origin
);
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void gtk_settings_set_double_property (GtkSettings *settings
,const gchar *name
,gdouble v_double
,const gchar *origin
);
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