Functions
gdk_display_open ()
GdkDisplay *
gdk_display_open (const gchar *display_name);
Opens a display.
Returns
a GdkDisplay, or NULL if the
display could not be opened.
[nullable][transfer none]
Since: 2.2
gdk_display_get_default ()
GdkDisplay *
gdk_display_get_default (void);
Gets the default GdkDisplay. This is a convenience
function for:
gdk_display_manager_get_default_display (gdk_display_manager_get()).
Returns
a GdkDisplay, or NULL if
there is no default display.
[nullable][transfer none]
Since: 2.2
gdk_display_get_name ()
const gchar *
gdk_display_get_name (GdkDisplay *display);
Gets the name of the display.
Returns
a string representing the display name. This string is owned
by GDK and should not be modified or freed.
Since: 2.2
gdk_display_get_n_screens ()
gint
gdk_display_get_n_screens (GdkDisplay *display);
gdk_display_get_n_screens has been deprecated since version 3.10 and should not be used in newly-written code.
The number of screens is always 1.
Gets the number of screen managed by the display
.
Returns
number of screens.
Since: 2.2
gdk_display_get_screen ()
GdkScreen *
gdk_display_get_screen (GdkDisplay *display,
gint screen_num);
gdk_display_get_screen has been deprecated since version 3.20 and should not be used in newly-written code.
There is only one screen; use gdk_display_get_default_screen() to get it.
Returns a screen object for one of the screens of the display.
Returns
the GdkScreen object.
[transfer none]
Since: 2.2
gdk_display_get_default_screen ()
GdkScreen *
gdk_display_get_default_screen (GdkDisplay *display);
Get the default GdkScreen for display
.
Returns
the default GdkScreen object for display
.
[transfer none]
Since: 2.2
gdk_display_pointer_ungrab ()
void
gdk_display_pointer_ungrab (GdkDisplay *display,
guint32 time_);
Release any pointer grab.
Since: 2.2
gdk_display_keyboard_ungrab ()
void
gdk_display_keyboard_ungrab (GdkDisplay *display,
guint32 time_);
Release any keyboard grab
Since: 2.2
gdk_display_pointer_is_grabbed ()
gboolean
gdk_display_pointer_is_grabbed (GdkDisplay *display);
gdk_display_pointer_is_grabbed has been deprecated since version 3.0 and should not be used in newly-written code.
Use gdk_display_device_is_grabbed() instead.
Test if the pointer is grabbed.
Returns
TRUE if an active X pointer grab is in effect
Since: 2.2
gdk_display_device_is_grabbed ()
gboolean
gdk_display_device_is_grabbed (GdkDisplay *display,
GdkDevice *device);
Returns TRUE if there is an ongoing grab on device
for display
.
Returns
TRUE if there is a grab in effect for device
.
gdk_display_beep ()
void
gdk_display_beep (GdkDisplay *display);
Emits a short beep on display
Since: 2.2
gdk_display_sync ()
void
gdk_display_sync (GdkDisplay *display);
Flushes any requests queued for the windowing system and waits until all
requests have been handled. This is often used for making sure that the
display is synchronized with the current state of the program. Calling
gdk_display_sync() before gdk_error_trap_pop() makes sure that any errors
generated from earlier requests are handled before the error trap is
removed.
This is most useful for X11. On windowing systems where requests are
handled synchronously, this function will do nothing.
Since: 2.2
gdk_display_flush ()
void
gdk_display_flush (GdkDisplay *display);
Flushes any requests queued for the windowing system; this happens automatically
when the main loop blocks waiting for new events, but if your application
is drawing without returning control to the main loop, you may need
to call this function explicitly. A common case where this function
needs to be called is when an application is executing drawing commands
from a thread other than the thread where the main loop is running.
This is most useful for X11. On windowing systems where requests are
handled synchronously, this function will do nothing.
Since: 2.4
gdk_display_close ()
void
gdk_display_close (GdkDisplay *display);
Closes the connection to the windowing system for the given display,
and cleans up associated resources.
Since: 2.2
gdk_display_is_closed ()
gboolean
gdk_display_is_closed (GdkDisplay *display);
Finds out if the display has been closed.
Returns
TRUE if the display is closed.
Since: 2.22
gdk_display_get_event ()
GdkEvent *
gdk_display_get_event (GdkDisplay *display);
Gets the next GdkEvent to be processed for display
, fetching events from the
windowing system if necessary.
Since: 2.2
gdk_display_peek_event ()
GdkEvent *
gdk_display_peek_event (GdkDisplay *display);
Gets a copy of the first GdkEvent in the display
’s event queue, without
removing the event from the queue. (Note that this function will
not get more events from the windowing system. It only checks the events
that have already been moved to the GDK event queue.)
Since: 2.2
gdk_display_put_event ()
void
gdk_display_put_event (GdkDisplay *display,
const GdkEvent *event);
Appends a copy of the given event onto the front of the event
queue for display
.
Since: 2.2
gdk_display_has_pending ()
gboolean
gdk_display_has_pending (GdkDisplay *display);
Returns whether the display has events that are waiting
to be processed.
Returns
TRUE if there are events ready to be processed.
Since: 3.0
gdk_display_set_double_click_time ()
void
gdk_display_set_double_click_time (GdkDisplay *display,
guint msec);
Sets the double click time (two clicks within this time interval
count as a double click and result in a GDK_2BUTTON_PRESS event).
Applications should not set this, it is a global
user-configured setting.
Since: 2.2
gdk_display_set_double_click_distance ()
void
gdk_display_set_double_click_distance (GdkDisplay *display,
guint distance);
Sets the double click distance (two clicks within this distance
count as a double click and result in a GDK_2BUTTON_PRESS event).
See also gdk_display_set_double_click_time().
Applications should not set this, it is a global
user-configured setting.
Since: 2.4
gdk_display_get_pointer ()
void
gdk_display_get_pointer (GdkDisplay *display,
GdkScreen **screen,
gint *x,
gint *y,
GdkModifierType *mask);
gdk_display_get_pointer has been deprecated since version 3.0 and should not be used in newly-written code.
Use gdk_device_get_position() instead.
Gets the current location of the pointer and the current modifier
mask for a given display.
Since: 2.2
gdk_display_list_devices ()
GList *
gdk_display_list_devices (GdkDisplay *display);
Returns the list of available input devices attached to display
.
The list is statically allocated and should not be freed.
Returns
a list of GdkDevice.
[transfer none][element-type GdkDevice]
Since: 2.2
gdk_display_get_window_at_pointer ()
GdkWindow *
gdk_display_get_window_at_pointer (GdkDisplay *display,
gint *win_x,
gint *win_y);
Obtains the window underneath the mouse pointer, returning the location
of the pointer in that window in win_x
, win_y
for screen
. Returns NULL
if the window under the mouse pointer is not known to GDK (for example,
belongs to another application).
Returns
the window under the mouse
pointer, or NULL.
[nullable][transfer none]
Since: 2.2
gdk_display_warp_pointer ()
void
gdk_display_warp_pointer (GdkDisplay *display,
GdkScreen *screen,
gint x,
gint y);
gdk_display_warp_pointer has been deprecated since version 3.0 and should not be used in newly-written code.
Use gdk_device_warp() instead.
Warps the pointer of display
to the point x
,y
on
the screen screen
, unless the pointer is confined
to a window by a grab, in which case it will be moved
as far as allowed by the grab. Warping the pointer
creates events as if the user had moved the mouse
instantaneously to the destination.
Note that the pointer should normally be under the
control of the user. This function was added to cover
some rare use cases like keyboard navigation support
for the color picker in the GtkColorSelectionDialog.
Since: 2.8
gdk_display_supports_cursor_color ()
gboolean
gdk_display_supports_cursor_color (GdkDisplay *display);
Returns TRUE if multicolored cursors are supported
on display
. Otherwise, cursors have only a forground
and a background color.
Returns
whether cursors can have multiple colors.
Since: 2.4
gdk_display_supports_cursor_alpha ()
gboolean
gdk_display_supports_cursor_alpha (GdkDisplay *display);
Returns TRUE if cursors can use an 8bit alpha channel
on display
. Otherwise, cursors are restricted to bilevel
alpha (i.e. a mask).
Returns
whether cursors can have alpha channels.
Since: 2.4
gdk_display_get_default_cursor_size ()
guint
gdk_display_get_default_cursor_size (GdkDisplay *display);
Returns the default size to use for cursors on display
.
Returns
the default cursor size.
Since: 2.4
gdk_display_get_maximal_cursor_size ()
void
gdk_display_get_maximal_cursor_size (GdkDisplay *display,
guint *width,
guint *height);
Gets the maximal size to use for cursors on display
.
Since: 2.4
gdk_display_get_default_group ()
GdkWindow *
gdk_display_get_default_group (GdkDisplay *display);
Returns the default group leader window for all toplevel windows
on display
. This window is implicitly created by GDK.
See gdk_window_set_group().
Returns
The default group leader window
for display
.
[transfer none]
Since: 2.4
gdk_display_supports_selection_notification ()
gboolean
gdk_display_supports_selection_notification
(GdkDisplay *display);
Returns whether GdkEventOwnerChange events will be
sent when the owner of a selection changes.
Since: 2.6
gdk_display_request_selection_notification ()
gboolean
gdk_display_request_selection_notification
(GdkDisplay *display,
GdkAtom selection);
Request GdkEventOwnerChange events for ownership changes
of the selection named by the given atom.
Since: 2.6
gdk_display_supports_clipboard_persistence ()
gboolean
gdk_display_supports_clipboard_persistence
(GdkDisplay *display);
Returns whether the speicifed display supports clipboard
persistance; i.e. if it’s possible to store the clipboard data after an
application has quit. On X11 this checks if a clipboard daemon is
running.
Returns
TRUE if the display supports clipboard persistance.
Since: 2.6
gdk_display_supports_shapes ()
gboolean
gdk_display_supports_shapes (GdkDisplay *display);
Returns TRUE if gdk_window_shape_combine_mask() can
be used to create shaped windows on display
.
Returns
TRUE if shaped windows are supported
Since: 2.10
gdk_display_supports_input_shapes ()
gboolean
gdk_display_supports_input_shapes (GdkDisplay *display);
Returns TRUE if gdk_window_input_shape_combine_mask() can
be used to modify the input shape of windows on display
.
Returns
TRUE if windows with modified input shape are supported
Since: 2.10
gdk_display_supports_composite ()
gboolean
gdk_display_supports_composite (GdkDisplay *display);
gdk_display_supports_composite has been deprecated since version 3.16 and should not be used in newly-written code.
Compositing is an outdated technology that
only ever worked on X11.
Returns TRUE if gdk_window_set_composited() can be used
to redirect drawing on the window using compositing.
Currently this only works on X11 with XComposite and
XDamage extensions available.
Returns
TRUE if windows may be composited.
Since: 2.12
gdk_display_notify_startup_complete ()
void
gdk_display_notify_startup_complete (GdkDisplay *display,
const gchar *startup_id);
Indicates to the GUI environment that the application has
finished loading, using a given identifier.
GTK+ will call this function automatically for GtkWindow
with custom startup-notification identifier unless
gtk_window_set_auto_startup_notification() is called to
disable that feature.
Since: 3.0
gdk_display_get_default_seat ()
GdkSeat *
gdk_display_get_default_seat (GdkDisplay *display);
Returns the default GdkSeat for this display.
Returns
the default seat.
[transfer none]
Since: 3.20
gdk_display_list_seats ()
GList *
gdk_display_list_seats (GdkDisplay *display);
Returns the list of seats known to display
.
Returns
the
list of seats known to the GdkDisplay.
[transfer container][element-type GdkSeat]
Since: 3.20
gdk_display_get_n_monitors ()
int
gdk_display_get_n_monitors (GdkDisplay *display);
Gets the number of monitors that belong to display
.
The returned number is valid until the next emission of the
“monitor-added” or “monitor-removed” signal.
Returns
the number of monitors
Since: 3.22
gdk_display_get_monitor ()
GdkMonitor *
gdk_display_get_monitor (GdkDisplay *display,
int monitor_num);
Gets a monitor associated with this display.
Returns
the GdkMonitor, or NULL if
monitor_num
is not a valid monitor number.
[nullable][transfer none]
Since: 3.22
gdk_display_get_primary_monitor ()
GdkMonitor *
gdk_display_get_primary_monitor (GdkDisplay *display);
Gets the primary monitor for the display.
The primary monitor is considered the monitor where the “main desktop”
lives. While normal application windows typically allow the window
manager to place the windows, specialized desktop applications
such as panels should place themselves on the primary monitor.
Returns
the primary monitor, or NULL if no primary
monitor is configured by the user.
[nullable][transfer none]
Since: 3.22
gdk_display_get_monitor_at_point ()
GdkMonitor *
gdk_display_get_monitor_at_point (GdkDisplay *display,
int x,
int y);
Gets the monitor in which the point (x
, y
) is located,
or a nearby monitor if the point is not in any monitor.
Returns
the monitor containing the point.
[transfer none]
Since: 3.22
gdk_display_get_monitor_at_window ()
GdkMonitor *
gdk_display_get_monitor_at_window (GdkDisplay *display,
GdkWindow *window);
Gets the monitor in which the largest area of window
resides, or a monitor close to window
if it is outside
of all monitors.
Returns
the monitor with the largest overlap with window
.
[transfer none]
Since: 3.22