GdkScreen

typedef struct _GdkScreen GdkScreen;

This is a currently just a placeholder typedef for the first argument of the window_at_pointer function in GdkPointerHooks. It will be used when GDK gets multihead support.

Since 2.2

gdk_screen_get_default ()

GdkScreen*  gdk_screen_get_default          (void);

Gets the default screen for the default display. (See gdk_display_get_default()).

Since 2.2

gdk_screen_get_default_colormap ()

GdkColormap* gdk_screen_get_default_colormap
                                            (GdkScreen *screen);

Gets the default colormap for screen.

Since 2.2

gdk_screen_set_default_colormap ()

void        gdk_screen_set_default_colormap (GdkScreen *screen,
                                             GdkColormap *colormap);

Sets the default colormap for screen.

Since 2.2

gdk_screen_get_system_colormap ()

GdkColormap* gdk_screen_get_system_colormap (GdkScreen *screen);

Gets the system's default colormap for screen

Since 2.2

gdk_screen_get_system_visual ()

GdkVisual*  gdk_screen_get_system_visual    (GdkScreen *screen);

Get the system's default visual for screen. This is the visual for the root window of the display. The return value should not be freed.

Since 2.2

gdk_screen_get_rgb_colormap ()

GdkColormap* gdk_screen_get_rgb_colormap    (GdkScreen *screen);

Gets the preferred colormap for rendering image data on screen. Not a very useful function; historically, GDK could only render RGB image data to one colormap and visual, but in the current version it can render to any colormap and visual. So there's no need to call this function.

Since 2.2

gdk_screen_get_rgb_visual ()

GdkVisual*  gdk_screen_get_rgb_visual       (GdkScreen *screen);

Gets a "preferred visual" chosen by GdkRGB for rendering image data on screen. In previous versions of GDK, this was the only visual GdkRGB could use for rendering. In current versions, it's simply the visual GdkRGB would have chosen as the optimal one in those previous versions. GdkRGB can now render to drawables with any visual.

Since 2.2

gdk_screen_get_rgba_colormap ()

GdkColormap* gdk_screen_get_rgba_colormap   (GdkScreen *screen);

Gets a colormap to use for creating windows or pixmaps with an alpha channel. The windowing system on which GTK+ is running may not support this capability, in which case NULL will be returned. Even if a non-NULL value is returned, its possible that the window's alpha channel won't be honored when displaying the window on the screen: in particular, for X an appropriate windowing manager and compositing manager must be running to provide appropriate display.

Since 2.8

gdk_screen_get_rgba_visual ()

GdkVisual*  gdk_screen_get_rgba_visual      (GdkScreen *screen);

Gets a visual to use for creating windows or pixmaps with an alpha channel. See the docs for gdk_screen_get_rgba_colormap() for caveats.

Since 2.8

gdk_screen_get_root_window ()

GdkWindow*  gdk_screen_get_root_window      (GdkScreen *screen);

Gets the root window of screen.

Since 2.2

gdk_screen_get_display ()

GdkDisplay* gdk_screen_get_display          (GdkScreen *screen);

Gets the display to which the screen belongs.

Since 2.2

gdk_screen_get_number ()

gint        gdk_screen_get_number           (GdkScreen *screen);

Gets the index of screen among the screens in the display to which it belongs. (See gdk_screen_get_display())

Since 2.2

gdk_screen_get_width ()

gint        gdk_screen_get_width            (GdkScreen *screen);

Gets the width of screen in pixels

Since 2.2

gdk_screen_get_height ()

gint        gdk_screen_get_height           (GdkScreen *screen);

Gets the height of screen in pixels

Since 2.2

gdk_screen_get_width_mm ()

gint        gdk_screen_get_width_mm         (GdkScreen *screen);

Gets the width of screen in millimeters. Note that on some X servers this value will not be correct.

Since 2.2

gdk_screen_get_height_mm ()

gint        gdk_screen_get_height_mm        (GdkScreen *screen);

Returns the height of screen in millimeters. Note that on some X servers this value will not be correct.

Since 2.2

gdk_screen_list_visuals ()

GList*      gdk_screen_list_visuals         (GdkScreen *screen);

Lists the available visuals for the specified screen. A visual describes a hardware image data format. For example, a visual might support 24-bit color, or 8-bit color, and might expect pixels to be in a certain format.

Call g_list_free() on the return value when you're finished with it.

Since 2.2

gdk_screen_get_toplevel_windows ()

GList*      gdk_screen_get_toplevel_windows (GdkScreen *screen);

Obtains a list of all toplevel windows known to GDK on the screen screen. A toplevel window is a child of the root window (see gdk_get_default_root_window()).

The returned list should be freed with g_list_free(), but its elements need not be freed.

Since 2.2

gdk_screen_make_display_name ()

gchar*      gdk_screen_make_display_name    (GdkScreen *screen);

Determines the name to pass to gdk_display_open() to get a GdkDisplay with this screen as the default screen.

Since 2.2

gdk_screen_get_n_monitors ()

gint        gdk_screen_get_n_monitors       (GdkScreen *screen);

Returns the number of monitors which screen consists of.

Since 2.2

gdk_screen_get_monitor_geometry ()

void        gdk_screen_get_monitor_geometry (GdkScreen *screen,
                                             gint monitor_num,
                                             GdkRectangle *dest);

Retrieves the GdkRectangle representing the size and position of the individual monitor within the entire screen area.

Note that the size of the entire screen area can be retrieved via gdk_screen_get_width() and gdk_screen_get_height().

Since 2.2

gdk_screen_get_monitor_at_point ()

gint        gdk_screen_get_monitor_at_point (GdkScreen *screen,
                                             gint x,
                                             gint y);

Returns the monitor number in which the point (x,y) is located.

Since 2.2

gdk_screen_get_monitor_at_window ()

gint        gdk_screen_get_monitor_at_window
                                            (GdkScreen *screen,
                                             GdkWindow *window);

Returns the number of the monitor in which the largest area of the bounding rectangle of window resides.

Since 2.2

gdk_screen_broadcast_client_message ()

void        gdk_screen_broadcast_client_message
                                            (GdkScreen *screen,
                                             GdkEvent *event);

On X11, sends an X ClientMessage event to all toplevel windows on screen.

Toplevel windows are determined by checking for the WM_STATE property, as described in the Inter-Client Communication Conventions Manual (ICCCM). If no windows are found with the WM_STATE property set, the message is sent to all children of the root window.

On Windows, broadcasts a message registered with the name GDK_WIN32_CLIENT_MESSAGE to all top-level windows. The amount of data is limited to one long, i.e. four bytes.

Since 2.2

gdk_screen_get_setting ()

gboolean    gdk_screen_get_setting          (GdkScreen *screen,
                                             const gchar *name,
                                             GValue *value);

Retrieves a desktop-wide setting such as double-click time for the GdkScreen screen.

FIXME needs a list of valid settings here, or a link to more information.

Since 2.2

gdk_spawn_on_screen ()

gboolean    gdk_spawn_on_screen             (GdkScreen *screen,
                                             const gchar *working_directory,
                                             gchar **argv,
                                             gchar **envp,
                                             GSpawnFlags flags,
                                             GSpawnChildSetupFunc child_setup,
                                             gpointer user_data,
                                             gint *child_pid,
                                             GError **error);

Like g_spawn_async(), except the child process is spawned in such an environment that on calling gdk_display_open() it would be returned a GdkDisplay with screen as the default screen.

This is useful for applications which wish to launch an application on a specific screen.

Since 2.4

gdk_spawn_on_screen_with_pipes ()

gboolean    gdk_spawn_on_screen_with_pipes  (GdkScreen *screen,
                                             const gchar *working_directory,
                                             gchar **argv,
                                             gchar **envp,
                                             GSpawnFlags flags,
                                             GSpawnChildSetupFunc child_setup,
                                             gpointer user_data,
                                             gint *child_pid,
                                             gint *standard_input,
                                             gint *standard_output,
                                             gint *standard_error,
                                             GError **error);

Like g_spawn_async_with_pipes(), except the child process is spawned in such an environment that on calling gdk_display_open() it would be returned a GdkDisplay with screen as the default screen.

This is useful for applications which wish to launch an application on a specific screen.

Since 2.4

gdk_spawn_command_line_on_screen ()

gboolean    gdk_spawn_command_line_on_screen
                                            (GdkScreen *screen,
                                             const gchar *command_line,
                                             GError **error);

Like g_spawn_command_line_async(), except the child process is spawned in such an environment that on calling gdk_display_open() it would be returned a GdkDisplay with screen as the default screen.

This is useful for applications which wish to launch an application on a specific screen.

Since 2.4

The "size-changed" signal

void        user_function                  (GdkScreen *screen,
                                            gpointer   user_data)      : Run last

The ::size_changed signal is emitted when the pixel width or height of a screen changes.

Since 2.2