Functions

  add_option_entries_libgtk_only (group)
  atom_intern (atom_name, only_if_exists)
  atom_intern_static_string (atom_name)
  beep ()
  cairo_create (window)
  cairo_draw_from_gl (cr, window, source, source_type, buffer_scale, x, y, width, height)
  cairo_get_clip_rectangle (cr)
  cairo_get_drawing_context (cr)
  cairo_rectangle (cr, rectangle)
  cairo_region (cr, region)
  cairo_region_create_from_surface (surface)
  cairo_set_source_color (cr, color)
  cairo_set_source_pixbuf (cr, pixbuf, pixbuf_x, pixbuf_y)
  cairo_set_source_rgba (cr, rgba)
  cairo_set_source_window (cr, window, x, y)
  cairo_surface_create_from_pixbuf (pixbuf, scale, for_window)
  color_parse (spec)
  disable_multidevice ()
  drag_abort (context, time_)
  drag_begin (window, targets)
  drag_begin_for_device (window, device, targets)
  drag_begin_from_point (window, device, targets, x_root, y_root)
  drag_drop (context, time_)
  drag_drop_done (context, success)
  drag_drop_succeeded (context)
  drag_find_window_for_screen (context, drag_window, screen, x_root, y_root)
  drag_get_selection (context)
  drag_motion (context, dest_window, protocol, x_root, y_root, suggested_action, possible_actions, time_)
  drag_status (context, action, time_)
  drop_finish (context, success, time_)
  drop_reply (context, accepted, time_)
  error_trap_pop ()
  error_trap_pop_ignored ()
  error_trap_push ()
  event_get ()
  event_handler_set (func, *data)
  event_peek ()
  event_request_motions (event)
  events_get_angle (event1, event2)
  events_get_center (event1, event2)
  events_get_distance (event1, event2)
  events_pending ()
  flush ()
  get_default_root_window ()
  get_display ()
  get_display_arg_name ()
  get_program_class ()
  get_show_events ()
  gl_error_quark ()
  init (argv)
  init_check (argv)
  keyboard_grab (window, owner_events, time_)
  keyboard_ungrab (time_)
  keyval_convert_case (symbol)
  keyval_from_name (keyval_name)
  keyval_is_lower (keyval)
  keyval_is_upper (keyval)
  keyval_name (keyval)
  keyval_to_lower (keyval)
  keyval_to_unicode (keyval)
  keyval_to_upper (keyval)
  list_visuals ()
  notify_startup_complete ()
  notify_startup_complete_with_id (startup_id)
  offscreen_window_get_embedder (window)
  offscreen_window_get_surface (window)
  offscreen_window_set_embedder (window, embedder)
  pango_context_get ()
  pango_context_get_for_display (display)
  pango_context_get_for_screen (screen)
  parse_args (argv)
  pixbuf_get_from_surface (surface, src_x, src_y, width, height)
  pixbuf_get_from_window (window, src_x, src_y, width, height)
  pointer_grab (window, owner_events, event_mask, confine_to, cursor, time_)
  pointer_is_grabbed ()
  pointer_ungrab (time_)
  pre_parse_libgtk_only ()
  property_delete (window, property)
  property_get (window, property, type, offset, length, pdelete)
  query_depths ()
  query_visual_types ()
  rectangle_intersect (src2)
  rectangle_union (src2)
  selection_convert (requestor, selection, target, time_)
  selection_owner_get (selection)
  selection_owner_get_for_display (display, selection)
  selection_owner_set (owner, selection, time_, send_event)
  selection_owner_set_for_display (display, owner, selection, time_, send_event)
  selection_send_notify (requestor, selection, target, property, time_)
  selection_send_notify_for_display (display, requestor, selection, target, property, time_)
  set_allowed_backends (backends)
  set_double_click_time (msec)
  set_program_class (program_class)
  set_show_events (show_events)
  setting_get (name, value)
  synthesize_window_state (window, unset_flags, set_flags)
  test_render_sync (window)
  test_simulate_button (window, x, y, button, modifiers, button_pressrelease)
  test_simulate_key (window, x, y, keyval, modifiers, key_pressrelease)
  text_property_to_utf8_list_for_display (display, encoding, format, text)
  threads_add_idle (priority, function, *data)
  threads_add_timeout (priority, interval, function, *data)
  threads_add_timeout_seconds (priority, interval, function, *data)
  threads_enter ()
  threads_init ()
  threads_leave ()
  unicode_to_keyval (wc)
  utf8_to_string_target (str)

Details

Gdk.add_option_entries_libgtk_only(group)[source]
Parameters:group (GLib.OptionGroup) – An option group.

Appends gdk option entries to the passed in option group. This is not public API and must not be used by applications.

Deprecated since version 3.16: This symbol was never meant to be used outside of GTK+

Gdk.atom_intern(atom_name, only_if_exists)[source]
Parameters:
  • atom_name (str) – a string.
  • only_if_exists (bool) – if True, GDK is allowed to not create a new atom, but just return %GDK_NONE if the requested atom doesn’t already exists. Currently, the flag is ignored, since checking the existance of an atom is as expensive as creating it.
Returns:

the atom corresponding to atom_name.

Return type:

Gdk.Atom

Finds or creates an atom corresponding to a given string.

Gdk.atom_intern_static_string(atom_name)[source]
Parameters:atom_name (str) – a static string
Returns:the atom corresponding to atom_name
Return type:Gdk.Atom

Finds or creates an atom corresponding to a given string.

Note that this function is identical to Gdk.Atom.intern() except that if a new Gdk.Atom is created the string itself is used rather than a copy. This saves memory, but can only be used if the string will always exist. It can be used with statically allocated strings in the main program, but not with statically allocated memory in dynamically loaded modules, if you expect to ever unload the module again (e.g. do not use this function in GTK+ theme engines).

New in version 2.10.

Gdk.beep()[source]

Emits a short beep on the default display.

Gdk.cairo_create(window)[source]
Parameters:window (Gdk.Window) – a Gdk.Window
Returns:A newly created Cairo context. Free with cairo_destroy() when you are done drawing.
Return type:cairo.Context

Creates a Cairo context for drawing to window.

Note that calling cairo.Context.reset_clip() on the resulting cairo.Context will produce undefined results, so avoid it at all costs.

Typically, this function is used to draw on a Gdk.Window out of the paint cycle of the toolkit; this should be avoided, as it breaks various assumptions and optimizations.

If you are drawing on a native Gdk.Window in response to a Gdk.EventType.EXPOSE event you should use Gdk.Window.begin_draw_frame() and Gdk.DrawingContext.get_cairo_context() instead. GTK will automatically do this for you when drawing a widget.

New in version 2.8.

Deprecated since version 3.22: Use Gdk.Window.begin_draw_frame() and Gdk.DrawingContext.get_cairo_context() instead

Gdk.cairo_draw_from_gl(cr, window, source, source_type, buffer_scale, x, y, width, height)[source]
Parameters:
  • cr (cairo.Context) – a cairo context
  • window (Gdk.Window) – The window we’re rendering for (not necessarily into)
  • source (int) – The GL ID of the source buffer
  • source_type (int) – The type of the source
  • buffer_scale (int) – The scale-factor that the source buffer is allocated for
  • x (int) – The source x position in source to start copying from in GL coordinates
  • y (int) – The source y position in source to start copying from in GL coordinates
  • width (int) – The width of the region to draw
  • height (int) – The height of the region to draw

This is the main way to draw GL content in GTK+. It takes a render buffer ID (source_type == #GL_RENDERBUFFER) or a texture id (source_type == #GL_TEXTURE) and draws it onto cr with an OVER operation, respecting the current clip. The top left corner of the rectangle specified by x, y, width and height will be drawn at the current (0,0) position of the cairo.Context.

This will work for *all* cairo.Context, as long as window is realized, but the fallback implementation that reads back the pixels from the buffer may be used in the general case. In the case of direct drawing to a window with no special effects applied to cr it will however use a more efficient approach.

For #GL_RENDERBUFFER the code will always fall back to software for buffers with alpha components, so make sure you use #GL_TEXTURE if using alpha.

Calling this may change the current GL context.

New in version 3.16.

Gdk.cairo_get_clip_rectangle(cr)[source]
Parameters:cr (cairo.Context) – a cairo context
Returns:True if a clip rectangle exists, False if all of cr is clipped and all drawing can be skipped
rect:return location for the clip, or None
Return type:(bool, rect: Gdk.Rectangle)

This is a convenience function around cairo.Context.clip_extents(). It rounds the clip extents to integer coordinates and returns a boolean indicating if a clip area exists.

Gdk.cairo_get_drawing_context(cr)[source]
Parameters:cr (cairo.Context) – a Cairo context
Returns:a Gdk.DrawingContext, if any is set
Return type:Gdk.DrawingContext or None

Retrieves the Gdk.DrawingContext that created the Cairo context cr.

New in version 3.22.

Gdk.cairo_rectangle(cr, rectangle)[source]
Parameters:

Adds the given rectangle to the current path of cr.

New in version 2.8.

Gdk.cairo_region(cr, region)[source]
Parameters:

Adds the given region to the current path of cr.

New in version 2.8.

Gdk.cairo_region_create_from_surface(surface)[source]
Parameters:surface (cairo.Surface) – a cairo surface
Returns:A cairo.Region; must be freed with cairo_region_destroy()
Return type:cairo.Region

Creates region that describes covers the area where the given surface is more than 50% opaque.

This function takes into account device offsets that might be set with cairo.Surface.set_device_offset().

Gdk.cairo_set_source_color(cr, color)[source]
Parameters:

Sets the specified Gdk.Color as the source color of cr.

New in version 2.8.

Deprecated since version 3.4: Use Gdk.cairo_set_source_rgba() instead

Gdk.cairo_set_source_pixbuf(cr, pixbuf, pixbuf_x, pixbuf_y)[source]
Parameters:

Sets the given pixbuf as the source pattern for cr.

The pattern has an extend mode of cairo.Extend.NONE and is aligned so that the origin of pixbuf is pixbuf_x, pixbuf_y.

New in version 2.8.

Gdk.cairo_set_source_rgba(cr, rgba)[source]
Parameters:

Sets the specified Gdk.RGBA as the source color of cr.

New in version 3.0.

Gdk.cairo_set_source_window(cr, window, x, y)[source]
Parameters:
  • cr (cairo.Context) – a cairo context
  • window (Gdk.Window) – a Gdk.Window
  • x (float) – X coordinate of location to place upper left corner of window
  • y (float) – Y coordinate of location to place upper left corner of window

Sets the given window as the source pattern for cr.

The pattern has an extend mode of cairo.Extend.NONE and is aligned so that the origin of window is x, y. The window contains all its subwindows when rendering.

Note that the contents of window are undefined outside of the visible part of window, so use this function with care.

New in version 2.24.

Gdk.cairo_surface_create_from_pixbuf(pixbuf, scale, for_window)[source]
Parameters:
Returns:

a new cairo surface, must be freed with cairo_surface_destroy()

Return type:

cairo.Surface

Creates an image surface with the same contents as the pixbuf.

New in version 3.10.

Gdk.color_parse(spec)[source]
Parameters:spec (str) – the string specifying the color
Returns:Gdk.Color or None if the parsing didn’t succeed
Return type:Gdk.Color or None

Deprecated since version 3.14: Use Gdk.RGBA

Gdk.disable_multidevice()[source]

Disables multidevice support in GDK. This call must happen prior to Gdk.Display.open(), gtk_init(), gtk_init_with_args() or gtk_init_check() in order to take effect.

Most common GTK+ applications won’t ever need to call this. Only applications that do mixed GDK/Xlib calls could want to disable multidevice support if such Xlib code deals with input devices in any way and doesn’t observe the presence of XInput 2.

New in version 3.0.

Gdk.drag_abort(context, time_)[source]
Parameters:

Aborts a drag without dropping.

This function is called by the drag source.

This function does not need to be called in managed drag and drop operations. See Gdk.DragContext.manage_dnd() for more information.

Gdk.drag_begin(window, targets)[source]
Parameters:
Returns:

a newly created Gdk.DragContext

Return type:

Gdk.DragContext

Starts a drag and creates a new drag context for it. This function assumes that the drag is controlled by the client pointer device, use Gdk.drag_begin_for_device() to begin a drag with a different device.

This function is called by the drag source.

Gdk.drag_begin_for_device(window, device, targets)[source]
Parameters:
Returns:

a newly created Gdk.DragContext

Return type:

Gdk.DragContext

Starts a drag and creates a new drag context for it.

This function is called by the drag source.

Gdk.drag_begin_from_point(window, device, targets, x_root, y_root)[source]
Parameters:
  • window (Gdk.Window) – the source window for this drag
  • device (Gdk.Device) – the device that controls this drag
  • targets ([Gdk.Atom]) – the offered targets, as list of Gdk.Atoms
  • x_root (int) – the x coordinate where the drag nominally started
  • y_root (int) – the y coordinate where the drag nominally started
Returns:

a newly created Gdk.DragContext

Return type:

Gdk.DragContext

Starts a drag and creates a new drag context for it.

This function is called by the drag source.

New in version 3.20.

Gdk.drag_drop(context, time_)[source]
Parameters:

Drops on the current destination.

This function is called by the drag source.

This function does not need to be called in managed drag and drop operations. See Gdk.DragContext.manage_dnd() for more information.

Gdk.drag_drop_done(context, success)[source]
Parameters:

Inform GDK if the drop ended successfully. Passing False for success may trigger a drag cancellation animation.

This function is called by the drag source, and should be the last call before dropping the reference to the context.

The Gdk.DragContext will only take the first Gdk.drag_drop_done() call as effective, if this function is called multiple times, all subsequent calls will be ignored.

New in version 3.20.

Gdk.drag_drop_succeeded(context)[source]
Parameters:context (Gdk.DragContext) – a Gdk.DragContext
Returns:True if the drop was successful.
Return type:bool

Returns whether the dropped data has been successfully transferred. This function is intended to be used while handling a Gdk.EventType.DROP_FINISHED event, its return value is meaningless at other times.

New in version 2.6.

Gdk.drag_find_window_for_screen(context, drag_window, screen, x_root, y_root)[source]
Parameters:
  • context (Gdk.DragContext) – a Gdk.DragContext
  • drag_window (Gdk.Window) – a window which may be at the pointer position, but should be ignored, since it is put up by the drag source as an icon
  • screen (Gdk.Screen) – the screen where the destination window is sought
  • x_root (int) – the x position of the pointer in root coordinates
  • y_root (int) – the y position of the pointer in root coordinates
Returns:

dest_window:location to store the destination window in
protocol:location to store the DND protocol in

Return type:

(dest_window: Gdk.Window, protocol: Gdk.DragProtocol)

Finds the destination window and DND protocol to use at the given pointer position.

This function is called by the drag source to obtain the dest_window and protocol parameters for Gdk.drag_motion().

New in version 2.2.

Gdk.drag_get_selection(context)[source]
Parameters:context (Gdk.DragContext) – a Gdk.DragContext.
Returns:the selection atom, or %GDK_NONE
Return type:Gdk.Atom

Returns the selection atom for the current source window.

Gdk.drag_motion(context, dest_window, protocol, x_root, y_root, suggested_action, possible_actions, time_)[source]
Parameters:
  • context (Gdk.DragContext) – a Gdk.DragContext
  • dest_window (Gdk.Window) – the new destination window, obtained by gdk_drag_find_window()
  • protocol (Gdk.DragProtocol) – the DND protocol in use, obtained by gdk_drag_find_window()
  • x_root (int) – the x position of the pointer in root coordinates
  • y_root (int) – the y position of the pointer in root coordinates
  • suggested_action (Gdk.DragAction) – the suggested action
  • possible_actions (Gdk.DragAction) – the possible actions
  • time (int) – the timestamp for this operation
Return type:

bool

Updates the drag context when the pointer moves or the set of actions changes.

This function is called by the drag source.

This function does not need to be called in managed drag and drop operations. See Gdk.DragContext.manage_dnd() for more information.

Gdk.drag_status(context, action, time_)[source]
Parameters:
  • context (Gdk.DragContext) – a Gdk.DragContext
  • action (Gdk.DragAction) – the selected action which will be taken when a drop happens, or 0 to indicate that a drop will not be accepted
  • time (int) – the timestamp for this operation

Selects one of the actions offered by the drag source.

This function is called by the drag destination in response to Gdk.drag_motion() called by the drag source.

Gdk.drop_finish(context, success, time_)[source]
Parameters:

Ends the drag operation after a drop.

This function is called by the drag destination.

Gdk.drop_reply(context, accepted, time_)[source]
Parameters:

Accepts or rejects a drop.

This function is called by the drag destination in response to a drop initiated by the drag source.

Gdk.error_trap_pop()[source]
Returns:X error code or 0 on success
Return type:int

Removes an error trap pushed with Gdk.error_trap_push(). May block until an error has been definitively received or not received from the X server. Gdk.error_trap_pop_ignored() is preferred if you don’t need to know whether an error occurred, because it never has to block. If you don’t need the return value of Gdk.error_trap_pop(), use Gdk.error_trap_pop_ignored().

Prior to GDK 3.0, this function would not automatically sync for you, so you had to Gdk.flush() if your last call to Xlib was not a blocking round trip.

Gdk.error_trap_pop_ignored()[source]

Removes an error trap pushed with Gdk.error_trap_push(), but without bothering to wait and see whether an error occurred. If an error arrives later asynchronously that was triggered while the trap was pushed, that error will be ignored.

New in version 3.0.

Gdk.error_trap_push()[source]

This function allows X errors to be trapped instead of the normal behavior of exiting the application. It should only be used if it is not possible to avoid the X error in any other way. Errors are ignored on all Gdk.Display currently known to the Gdk.DisplayManager. If you don’t care which error happens and just want to ignore everything, pop with Gdk.error_trap_pop_ignored(). If you need the error code, use Gdk.error_trap_pop() which may have to block and wait for the error to arrive from the X server.

This API exists on all platforms but only does anything on X.

You can use gdk_x11_display_error_trap_push() to ignore errors on only a single display.

Trapping an X error
gdk_error_trap_push ();

 // ... Call the X function which may cause an error here ...


if (gdk_error_trap_pop ())
 {
   // ... Handle the error here ...
 }
Gdk.event_get()[source]
Returns:the next Gdk.Event to be processed, or None if no events are pending. The returned Gdk.Event should be freed with Gdk.Event.free().
Return type:Gdk.Event or None

Checks all open displays for a Gdk.Event to process,to be processed on, fetching events from the windowing system if necessary. See Gdk.Display.get_event().

Gdk.event_handler_set(func, *data)[source]
Parameters:
  • func (Gdk.EventFunc) – the function to call to handle events from GDK.
  • data (object or None) – user data to pass to the function.

Sets the function to call to handle all events from GDK.

Note that GTK+ uses this to install its own event handler, so it is usually not useful for GTK+ applications. (Although an application can call this function then call gtk_main_do_event() to pass events to GTK+.)

Gdk.event_peek()[source]
Returns:a copy of the first Gdk.Event on some event queue, or None if no events are in any queues. The returned Gdk.Event should be freed with Gdk.Event.free().
Return type:Gdk.Event or None

If there is an event waiting in the event queue of some open display, returns a copy of it. See Gdk.Display.peek_event().

Gdk.event_request_motions(event)[source]
Parameters:event (Gdk.EventMotion) – a valid Gdk.Event

Request more motion notifies if event is a motion notify hint event.

This function should be used instead of Gdk.Window.get_pointer() to request further motion notifies, because it also works for extension events where motion notifies are provided for devices other than the core pointer. Coordinate extraction, processing and requesting more motion events from a Gdk.EventType.MOTION_NOTIFY event usually works like this:

{
  // motion_event handler
  x = motion_event->x;
  y = motion_event->y;
  // handle (x,y) motion
  gdk_event_request_motions (motion_event); // handles is_hint events
}

New in version 2.12.

Gdk.events_get_angle(event1, event2)[source]
Parameters:
Returns:

True if the angle could be calculated.

angle:return location for the relative angle between both events

Return type:

(bool, angle: float)

If both events contain X/Y information, this function will return True and return in angle the relative angle from event1 to event2. The rotation direction for positive angles is from the positive X axis towards the positive Y axis.

New in version 3.0.

Gdk.events_get_center(event1, event2)[source]
Parameters:
Returns:

True if the center could be calculated.

x:return location for the X coordinate of the center
y:return location for the Y coordinate of the center

Return type:

(bool, x: float, y: float)

If both events contain X/Y information, the center of both coordinates will be returned in x and y.

New in version 3.0.

Gdk.events_get_distance(event1, event2)[source]
Parameters:
Returns:

True if the distance could be calculated.

distance:return location for the distance

Return type:

(bool, distance: float)

If both events have X/Y information, the distance between both coordinates (as in a straight line going from event1 to event2) will be returned.

New in version 3.0.

Gdk.events_pending()[source]
Returns:True if any events are pending.
Return type:bool

Checks if any events are ready to be processed for any display.

Gdk.flush()[source]

Flushes the output buffers of all display connections and waits until all requests have been processed. This is rarely needed by applications.

Gdk.get_default_root_window()[source]
Returns:the default root window
Return type:Gdk.Window

Obtains the root window (parent all other windows are inside) for the default display and screen.

Gdk.get_display()[source]
Returns:the name of the display.
Return type:str

Gets the name of the display, which usually comes from the DISPLAY environment variable or the --display command line option.

Deprecated since version 3.8: Call Gdk.Display.get_name (Gdk.Display.get_default ())) instead.

Gdk.get_display_arg_name()[source]
Returns:the display name, if specified explicitly, otherwise None this string is owned by GTK+ and must not be modified or freed.
Return type:str or None

Gets the display name specified in the command line arguments passed to Gdk.init() or Gdk.parse_args(), if any.

New in version 2.2.

Gdk.get_program_class()[source]
Returns:the program class.
Return type:str

Gets the program class. Unless the program class has explicitly been set with Gdk.set_program_class() or with the --class commandline option, the default value is the program name (determined with GLib.get_prgname()) with the first character converted to uppercase.

Gdk.get_show_events()[source]
Returns:True if event debugging output is enabled.
Return type:bool

Gets whether event debugging output is enabled.

Gdk.gl_error_quark()[source]
Return type:int
Gdk.init(argv)[source]
Parameters:argv ([str]) – the array of command line arguments.
Returns:the array of command line arguments.
Return type:argv: [str]

Initializes the GDK library and connects to the windowing system. If initialization fails, a warning message is output and the application terminates with a call to exit(1).

Any arguments used by GDK are removed from the array and argc and argv are updated accordingly.

GTK+ initializes GDK in gtk_init() and so this function is not usually needed by GTK+ applications.

Gdk.init_check(argv)[source]
Parameters:argv ([str]) – the array of command line arguments.
Returns:True if initialization succeeded.
argv:the array of command line arguments.
Return type:(bool, argv: [str])

Initializes the GDK library and connects to the windowing system, returning True on success.

Any arguments used by GDK are removed from the array and argc and argv are updated accordingly.

GTK+ initializes GDK in gtk_init() and so this function is not usually needed by GTK+ applications.

Gdk.keyboard_grab(window, owner_events, time_)[source]
Parameters:
  • window (Gdk.Window) – the Gdk.Window which will own the grab (the grab window).
  • owner_events (bool) – if False then all keyboard events are reported with respect to window. If True then keyboard events for this application are reported as normal, but keyboard events outside this application are reported with respect to window. Both key press and key release events are always reported, independant of the event mask set by the application.
  • time (int) – a timestamp from a Gdk.Event, or Gdk.CURRENT_TIME if no timestamp is available.
Returns:

Gdk.GrabStatus.SUCCESS if the grab was successful.

Return type:

Gdk.GrabStatus

Grabs the keyboard so that all events are passed to this application until the keyboard is ungrabbed with Gdk.keyboard_ungrab(). This overrides any previous keyboard grab by this client.

If you set up anything at the time you take the grab that needs to be cleaned up when the grab ends, you should handle the Gdk.EventGrabBroken events that are emitted when the grab ends unvoluntarily.

Deprecated since version 3.0: Use Gdk.Device.grab() instead.

Gdk.keyboard_ungrab(time_)[source]
Parameters:time (int) – a timestamp from a Gdk.Event, or Gdk.CURRENT_TIME if no timestamp is available.

Ungrabs the keyboard on the default display, if it is grabbed by this application.

Deprecated since version 3.0: Use Gdk.Device.ungrab(), together with Gdk.Device.grab() instead.

Gdk.keyval_convert_case(symbol)[source]
Parameters:symbol (int) – a keyval
Returns:
lower:return location for lowercase version of symbol
upper:return location for uppercase version of symbol
Return type:(lower: int, upper: int)

Obtains the upper- and lower-case versions of the keyval symbol. Examples of keyvals are Gdk.KEY_a, #GDK_KEY_Enter, Gdk.KEY_F1, etc.

Gdk.keyval_from_name(keyval_name)[source]
Parameters:keyval_name (str) – a key name
Returns:the corresponding key value, or Gdk.KEY_VoidSymbol if the key name is not a valid key
Return type:int

Converts a key name to a key value.

The names are the same as those in the gdk/gdkkeysyms.h header file but without the leading “GDK_KEY_”.

Gdk.keyval_is_lower(keyval)[source]
Parameters:keyval (int) – a key value.
Returns:True if keyval is in lower case, or if keyval is not subject to case conversion.
Return type:bool

Returns True if the given key value is in lower case.

Gdk.keyval_is_upper(keyval)[source]
Parameters:keyval (int) – a key value.
Returns:True if keyval is in upper case, or if keyval is not subject to case conversion.
Return type:bool

Returns True if the given key value is in upper case.

Gdk.keyval_name(keyval)[source]
Parameters:keyval (int) – a key value
Returns:a string containing the name of the key, or None if keyval is not a valid key. The string should not be modified.
Return type:str or None

Converts a key value into a symbolic name.

The names are the same as those in the gdk/gdkkeysyms.h header file but without the leading “GDK_KEY_”.

Gdk.keyval_to_lower(keyval)[source]
Parameters:keyval (int) – a key value.
Returns:the lower case form of keyval, or keyval itself if it is already in lower case or it is not subject to case conversion.
Return type:int

Converts a key value to lower case, if applicable.

Gdk.keyval_to_unicode(keyval)[source]
Parameters:keyval (int) – a GDK key symbol
Returns:the corresponding unicode character, or 0 if there is no corresponding character.
Return type:int

Convert from a GDK key symbol to the corresponding ISO10646 (Unicode) character.

Gdk.keyval_to_upper(keyval)[source]
Parameters:keyval (int) – a key value.
Returns:the upper case form of keyval, or keyval itself if it is already in upper case or it is not subject to case conversion.
Return type:int

Converts a key value to upper case, if applicable.

Gdk.list_visuals()[source]
Returns:a list of visuals; the list must be freed, but not its contents
Return type:[Gdk.Visual]

Lists the available visuals for the default screen. (See Gdk.Screen.list_visuals()) 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.

Deprecated since version 3.22: Use Gdk.Screen.list_visuals (Gdk.Screen.get_default ()).

Gdk.notify_startup_complete()[source]

Indicates to the GUI environment that the application has finished loading. If the applications opens windows, this function is normally called after opening the application’s initial set of windows.

GTK+ will call this function automatically after opening the first #GtkWindow unless gtk_window_set_auto_startup_notification() is called to disable that feature.

New in version 2.2.

Gdk.notify_startup_complete_with_id(startup_id)[source]
Parameters:startup_id (str) – a startup-notification identifier, for which notification process should be completed

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.

New in version 2.12.

Gdk.offscreen_window_get_embedder(window)[source]
Parameters:window (Gdk.Window) – a Gdk.Window
Returns:the embedding Gdk.Window, or None if window is not an mbedded offscreen window
Return type:Gdk.Window or None

Gets the window that window is embedded in.

New in version 2.18.

Gdk.offscreen_window_get_surface(window)[source]
Parameters:window (Gdk.Window) – a Gdk.Window
Returns:The offscreen surface, or None if not offscreen
Return type:cairo.Surface or None

Gets the offscreen surface that an offscreen window renders into. If you need to keep this around over window resizes, you need to add a reference to it.

Gdk.offscreen_window_set_embedder(window, embedder)[source]
Parameters:

Sets window to be embedded in embedder.

To fully embed an offscreen window, in addition to calling this function, it is also necessary to handle the Gdk.Window ::pick-embedded-child signal on the embedder and the Gdk.Window ::to-embedder and Gdk.Window ::from-embedder signals on window.

New in version 2.18.

Gdk.pango_context_get()[source]
Returns:a new Pango.Context for the default display
Return type:Pango.Context

Creates a Pango.Context for the default GDK screen.

The context must be freed when you’re finished with it.

When using GTK+, normally you should use gtk_widget_get_pango_context() instead of this function, to get the appropriate context for the widget you intend to render text onto.

The newly created context will have the default font options (see cairo.FontOptions) for the default screen; if these options change it will not be updated. Using gtk_widget_get_pango_context() is more convenient if you want to keep a context around and track changes to the screen’s font rendering settings.

Gdk.pango_context_get_for_display(display)[source]
Parameters:display (Gdk.Display) – the Gdk.Display for which the context is to be created
Returns:a new Pango.Context for display
Return type:Pango.Context

Creates a Pango.Context for display.

The context must be freed when you’re finished with it.

When using GTK+, normally you should use gtk_widget_get_pango_context() instead of this function, to get the appropriate context for the widget you intend to render text onto.

The newly created context will have the default font options (see cairo.FontOptions) for the display; if these options change it will not be updated. Using gtk_widget_get_pango_context() is more convenient if you want to keep a context around and track changes to the font rendering settings.

New in version 3.22.

Gdk.pango_context_get_for_screen(screen)[source]
Parameters:screen (Gdk.Screen) – the Gdk.Screen for which the context is to be created.
Returns:a new Pango.Context for screen
Return type:Pango.Context

Creates a Pango.Context for screen.

The context must be freed when you’re finished with it.

When using GTK+, normally you should use gtk_widget_get_pango_context() instead of this function, to get the appropriate context for the widget you intend to render text onto.

The newly created context will have the default font options (see cairo.FontOptions) for the screen; if these options change it will not be updated. Using gtk_widget_get_pango_context() is more convenient if you want to keep a context around and track changes to the screen’s font rendering settings.

New in version 2.2.

Gdk.parse_args(argv)[source]
Parameters:argv ([str]) – the array of command line arguments.
Returns:the array of command line arguments.
Return type:argv: [str]

Parse command line arguments, and store for future use by calls to Gdk.Display.open().

Any arguments used by GDK are removed from the array and argc and argv are updated accordingly.

You shouldn’t call this function explicitly if you are using gtk_init(), gtk_init_check(), Gdk.init(), or Gdk.init_check().

New in version 2.2.

Gdk.pixbuf_get_from_surface(surface, src_x, src_y, width, height)[source]
Parameters:
  • surface (cairo.Surface) – surface to copy from
  • src_x (int) – Source X coordinate within surface
  • src_y (int) – Source Y coordinate within surface
  • width (int) – Width in pixels of region to get
  • height (int) – Height in pixels of region to get
Returns:

A newly-created pixbuf with a reference count of 1, or None on error

Return type:

GdkPixbuf.Pixbuf or None

Transfers image data from a cairo.Surface and converts it to an RGB(A) representation inside a GdkPixbuf.Pixbuf. This allows you to efficiently read individual pixels from cairo surfaces. For Gdk.Windows, use Gdk.pixbuf_get_from_window() instead.

This function will create an RGB pixbuf with 8 bits per channel. The pixbuf will contain an alpha channel if the surface contains one.

Gdk.pixbuf_get_from_window(window, src_x, src_y, width, height)[source]
Parameters:
  • window (Gdk.Window) – Source window
  • src_x (int) – Source X coordinate within window
  • src_y (int) – Source Y coordinate within window
  • width (int) – Width in pixels of region to get
  • height (int) – Height in pixels of region to get
Returns:

A newly-created pixbuf with a reference count of 1, or None on error

Return type:

GdkPixbuf.Pixbuf or None

Transfers image data from a Gdk.Window and converts it to an RGB(A) representation inside a GdkPixbuf.Pixbuf. In other words, copies image data from a server-side drawable to a client-side RGB(A) buffer. This allows you to efficiently read individual pixels on the client side.

This function will create an RGB pixbuf with 8 bits per channel with the size specified by the width and height arguments scaled by the scale factor of window. The pixbuf will contain an alpha channel if the window contains one.

If the window is off the screen, then there is no image data in the obscured/offscreen regions to be placed in the pixbuf. The contents of portions of the pixbuf corresponding to the offscreen region are undefined.

If the window you’re obtaining data from is partially obscured by other windows, then the contents of the pixbuf areas corresponding to the obscured regions are undefined.

If the window is not mapped (typically because it’s iconified/minimized or not on the current workspace), then None will be returned.

If memory can’t be allocated for the return value, None will be returned instead.

(In short, there are several ways this function can fail, and if it fails it returns None; so check the return value.)

Gdk.pointer_grab(window, owner_events, event_mask, confine_to, cursor, time_)[source]
Parameters:
  • window (Gdk.Window) – the Gdk.Window which will own the grab (the grab window).
  • owner_events (bool) – if False then all pointer events are reported with respect to window and are only reported if selected by event_mask. If True then pointer events for this application are reported as normal, but pointer events outside this application are reported with respect to window and only if selected by event_mask. In either mode, unreported events are discarded.
  • event_mask (Gdk.EventMask) – specifies the event mask, which is used in accordance with owner_events. Note that only pointer events (i.e. button and motion events) may be selected.
  • confine_to (Gdk.Window or None) – If non-None, the pointer will be confined to this window during the grab. If the pointer is outside confine_to, it will automatically be moved to the closest edge of confine_to and enter and leave events will be generated as necessary.
  • cursor (Gdk.Cursor or None) – the cursor to display while the grab is active. If this is None then the normal cursors are used for window and its descendants, and the cursor for window is used for all other windows.
  • time (int) – the timestamp of the event which led to this pointer grab. This usually comes from a Gdk.EventButton struct, though Gdk.CURRENT_TIME can be used if the time isn’t known.
Returns:

Gdk.GrabStatus.SUCCESS if the grab was successful.

Return type:

Gdk.GrabStatus

Grabs the pointer (usually a mouse) so that all events are passed to this application until the pointer is ungrabbed with Gdk.pointer_ungrab(), or the grab window becomes unviewable. This overrides any previous pointer grab by this client.

Pointer grabs are used for operations which need complete control over mouse events, even if the mouse leaves the application. For example in GTK+ it is used for Drag and Drop, for dragging the handle in the #GtkHPaned and #GtkVPaned widgets.

Note that if the event mask of an X window has selected both button press and button release events, then a button press event will cause an automatic pointer grab until the button is released. X does this automatically since most applications expect to receive button press and release events in pairs. It is equivalent to a pointer grab on the window with owner_events set to True.

If you set up anything at the time you take the grab that needs to be cleaned up when the grab ends, you should handle the Gdk.EventGrabBroken events that are emitted when the grab ends unvoluntarily.

Deprecated since version 3.0: Use Gdk.Device.grab() instead.

Gdk.pointer_is_grabbed()[source]
Returns:True if the pointer is currently grabbed by this application.
Return type:bool

Returns True if the pointer on the default display is currently grabbed by this application.

Note that this does not take the inmplicit pointer grab on button presses into account.

Deprecated since version 3.0: Use Gdk.Display.device_is_grabbed() instead.

Gdk.pointer_ungrab(time_)[source]
Parameters:time (int) – a timestamp from a Gdk.Event, or Gdk.CURRENT_TIME if no timestamp is available.

Ungrabs the pointer on the default display, if it is grabbed by this application.

Deprecated since version 3.0: Use Gdk.Device.ungrab(), together with Gdk.Device.grab() instead.

Gdk.pre_parse_libgtk_only()[source]

Prepare for parsing command line arguments for GDK. This is not public API and should not be used in application code.

Deprecated since version 3.16: This symbol was never meant to be used outside of GTK+

Gdk.property_delete(window, property)[source]
Parameters:

Deletes a property from a window.

Gdk.property_get(window, property, type, offset, length, pdelete)[source]
Parameters:
  • window (Gdk.Window) – a Gdk.Window
  • property (Gdk.Atom) – the property to retrieve
  • type (Gdk.Atom) – the desired property type, or %GDK_NONE, if any type of data is acceptable. If this does not match the actual type, then actual_format and actual_length will be filled in, a warning will be printed to stderr and no data will be returned.
  • offset (int) – the offset into the property at which to begin retrieving data, in 4 byte units.
  • length (int) – the length of the data to retrieve in bytes. Data is considered to be retrieved in 4 byte chunks, so length will be rounded up to the next highest 4 byte boundary (so be careful not to pass a value that might overflow when rounded up).
  • pdelete (int) – if True, delete the property after retrieving the data.
Returns:

True if data was successfully received and stored in data, otherwise False.

actual_property_type:
 location to store the actual type of the property.
actual_format:location to store the actual return format of the data; either 8, 16 or 32 bits.
data:location to store a pointer to the data. The retrieved data should be freed with GLib.free() when you are finished using it.

Return type:

(bool, actual_property_type: Gdk.Atom, actual_format: int, data: bytes)

Retrieves a portion of the contents of a property. If the property does not exist, then the function returns False, and %GDK_NONE will be stored in actual_property_type.

The XGetWindowProperty() function that Gdk.property_get() uses has a very confusing and complicated set of semantics. Unfortunately, Gdk.property_get() makes the situation worse instead of better (the semantics should be considered undefined), and also prints warnings to stderr in cases where it should return a useful error to the program. You are advised to use XGetWindowProperty() directly until a replacement function for Gdk.property_get() is provided.

Gdk.query_depths()[source]
Returns:return location for available depths
Return type:depths: [int]

This function returns the available bit depths for the default screen. It’s equivalent to listing the visuals (Gdk.list_visuals()) and then looking at the depth field in each visual, removing duplicates.

The array returned by this function should not be freed.

Deprecated since version 3.22: Visual selection should be done using Gdk.Screen.get_system_visual() and Gdk.Screen.get_rgba_visual()

Gdk.query_visual_types()[source]
Returns:return location for the available visual types
Return type:visual_types: [Gdk.VisualType]

This function returns the available visual types for the default screen. It’s equivalent to listing the visuals (Gdk.list_visuals()) and then looking at the type field in each visual, removing duplicates.

The array returned by this function should not be freed.

Deprecated since version 3.22: Visual selection should be done using Gdk.Screen.get_system_visual() and Gdk.Screen.get_rgba_visual()

Gdk.rectangle_intersect(src2)

intersect(src2: Gdk.Rectangle) -> (bool, dest: Gdk.Rectangle)

Gdk.rectangle_union(src2)

union(src2: Gdk.Rectangle) -> dest: Gdk.Rectangle

Gdk.selection_convert(requestor, selection, target, time_)[source]
Parameters:
  • requestor (Gdk.Window) – a Gdk.Window.
  • selection (Gdk.Atom) – an atom identifying the selection to get the contents of.
  • target (Gdk.Atom) – the form in which to retrieve the selection.
  • time (int) – the timestamp to use when retrieving the selection. The selection owner may refuse the request if it did not own the selection at the time indicated by the timestamp.

Retrieves the contents of a selection in a given form.

Gdk.selection_owner_get(selection)[source]
Parameters:selection (Gdk.Atom) – an atom indentifying a selection.
Returns:if there is a selection owner for this window, and it is a window known to the current process, the Gdk.Window that owns the selection, otherwise None. Note that the return value may be owned by a different process if a foreign window was previously created for that window, but a new foreign window will never be created by this call.
Return type:Gdk.Window or None

Determines the owner of the given selection.

Gdk.selection_owner_get_for_display(display, selection)[source]
Parameters:
Returns:

if there is a selection owner for this window, and it is a window known to the current process, the Gdk.Window that owns the selection, otherwise None.

Return type:

Gdk.Window or None

Determine the owner of the given selection.

Note that the return value may be owned by a different process if a foreign window was previously created for that window, but a new foreign window will never be created by this call.

New in version 2.2.

Gdk.selection_owner_set(owner, selection, time_, send_event)[source]
Parameters:
  • owner (Gdk.Window or None) – a Gdk.Window or None to indicate that the the owner for the given should be unset.
  • selection (Gdk.Atom) – an atom identifying a selection.
  • time (int) – timestamp to use when setting the selection. If this is older than the timestamp given last time the owner was set for the given selection, the request will be ignored.
  • send_event (bool) – if True, and the new owner is different from the current owner, the current owner will be sent a SelectionClear event.
Returns:

True if the selection owner was successfully changed to owner, otherwise False.

Return type:

bool

Sets the owner of the given selection.

Gdk.selection_owner_set_for_display(display, owner, selection, time_, send_event)[source]
Parameters:
  • display (Gdk.Display) – the Gdk.Display
  • owner (Gdk.Window or None) – a Gdk.Window or None to indicate that the owner for the given should be unset
  • selection (Gdk.Atom) – an atom identifying a selection
  • time (int) – timestamp to use when setting the selection If this is older than the timestamp given last time the owner was set for the given selection, the request will be ignored
  • send_event (bool) – if True, and the new owner is different from the current owner, the current owner will be sent a SelectionClear event
Returns:

True if the selection owner was successfully changed to owner, otherwise False.

Return type:

bool

Sets the Gdk.Window owner as the current owner of the selection selection.

New in version 2.2.

Gdk.selection_send_notify(requestor, selection, target, property, time_)[source]
Parameters:
  • requestor (Gdk.Window) – window to which to deliver response.
  • selection (Gdk.Atom) – selection that was requested.
  • target (Gdk.Atom) – target that was selected.
  • property (Gdk.Atom) – property in which the selection owner stored the data, or %GDK_NONE to indicate that the request was rejected.
  • time (int) – timestamp.

Sends a response to SelectionRequest event.

Gdk.selection_send_notify_for_display(display, requestor, selection, target, property, time_)[source]
Parameters:
  • display (Gdk.Display) – the Gdk.Display where requestor is realized
  • requestor (Gdk.Window) – window to which to deliver response
  • selection (Gdk.Atom) – selection that was requested
  • target (Gdk.Atom) – target that was selected
  • property (Gdk.Atom) – property in which the selection owner stored the data, or %GDK_NONE to indicate that the request was rejected
  • time (int) – timestamp

Send a response to SelectionRequest event.

New in version 2.2.

Gdk.set_allowed_backends(backends)[source]
Parameters:backends (str) – a comma-separated list of backends

Sets a list of backends that GDK should try to use.

This can be be useful if your application does not work with certain GDK backends.

By default, GDK tries all included backends.

For example,

gdk_set_allowed_backends ("wayland,quartz,*");

instructs GDK to try the Wayland backend first, followed by the Quartz backend, and then all others.

If the GDK_BACKEND environment variable is set, it determines what backends are tried in what order, while still respecting the set of allowed backends that are specified by this function.

The possible backend names are x11, win32, quartz, broadway, wayland. You can also include a * in the list to try all remaining backends.

This call must happen prior to Gdk.Display.open(), gtk_init(), gtk_init_with_args() or gtk_init_check() in order to take effect.

New in version 3.10.

Gdk.set_double_click_time(msec)[source]
Parameters:msec (int) – double click time in milliseconds (thousandths of a second)

Set the double click time for the default display. See Gdk.Display.set_double_click_time(). See also Gdk.Display.set_double_click_distance(). Applications should not set this, it is a global user-configured setting.

Gdk.set_program_class(program_class)[source]
Parameters:program_class (str) – a string.

Sets the program class. The X11 backend uses the program class to set the class name part of the WM_CLASS property on toplevel windows; see the ICCCM.

The program class can still be overridden with the –class command line option.

Gdk.set_show_events(show_events)[source]
Parameters:show_events (bool) – True to output event debugging information.

Sets whether a trace of received events is output. Note that GTK+ must be compiled with debugging (that is, configured using the --enable-debug option) to use this option.

Gdk.setting_get(name, value)[source]
Parameters:
  • name (str) – the name of the setting.
  • value (GObject.Value) – location to store the value of the setting.
Returns:

True if the setting existed and a value was stored in value, False otherwise.

Return type:

bool

Obtains a desktop-wide setting, such as the double-click time, for the default screen. See Gdk.Screen.get_setting().

Gdk.synthesize_window_state(window, unset_flags, set_flags)[source]
Parameters:
Gdk.test_render_sync(window)[source]
Parameters:window (Gdk.Window) – a mapped Gdk.Window

Retrieves a pixel from window to force the windowing system to carry out any pending rendering commands.

This function is intended to be used to synchronize with rendering pipelines, to benchmark windowing system rendering operations.

New in version 2.14.

Gdk.test_simulate_button(window, x, y, button, modifiers, button_pressrelease)[source]
Parameters:
Returns:

whether all actions necessary for a button event simulation were carried out successfully

Return type:

bool

This function is intended to be used in GTK+ test programs. It will warp the mouse pointer to the given (x,`y`) coordinates within window and simulate a button press or release event. Because the mouse pointer needs to be warped to the target location, use of this function outside of test programs that run in their own virtual windowing system (e.g. Xvfb) is not recommended.

Also, Gdk.test_simulate_button() is a fairly low level function, for most testing purposes, gtk_test_widget_click() is the right function to call which will generate a button press event followed by its accompanying button release event.

New in version 2.14.

Gdk.test_simulate_key(window, x, y, keyval, modifiers, key_pressrelease)[source]
Parameters:
Returns:

whether all actions necessary for a key event simulation were carried out successfully

Return type:

bool

This function is intended to be used in GTK+ test programs. If (x,`y`) are > (-1,-1), it will warp the mouse pointer to the given (x,`y`) coordinates within window and simulate a key press or release event.

When the mouse pointer is warped to the target location, use of this function outside of test programs that run in their own virtual windowing system (e.g. Xvfb) is not recommended. If (x,`y`) are passed as (-1,-1), the mouse pointer will not be warped and window origin will be used as mouse pointer location for the event.

Also, Gdk.test_simulate_key() is a fairly low level function, for most testing purposes, gtk_test_widget_send_key() is the right function to call which will generate a key press event followed by its accompanying key release event.

New in version 2.14.

Gdk.text_property_to_utf8_list_for_display(display, encoding, format, text)[source]
Parameters:
  • display (Gdk.Display) – a Gdk.Display
  • encoding (Gdk.Atom) – an atom representing the encoding of the text
  • format (int) – the format of the property
  • text (bytes) – the text to convert
Returns:

the number of strings in the resulting list

list:location to store the list of strings or None. The list should be freed with GLib.strfreev().

Return type:

(int, list: [str])

Converts a text property in the given encoding to a list of UTF-8 strings.

New in version 2.2.

Gdk.threads_add_idle(priority, function, *data)[source]
Parameters:
Returns:

the ID (greater than 0) of the event source.

Return type:

int

Adds a function to be called whenever there are no higher priority events pending. If the function returns False it is automatically removed from the list of event sources and will not be called again.

This variant of GLib.idle_add() calls function with the GDK lock held. It can be thought of a MT-safe version for GTK+ widgets for the following use case, where you have to worry about idle_callback() running in thread A and accessing self after it has been finalized in thread B:

static gboolean
idle_callback (gpointer data)
{
   // gdk_threads_enter(); would be needed for g_idle_add()

   SomeWidget *self = data;
   // do stuff with self

   self->idle_id = 0;

   // gdk_threads_leave(); would be needed for g_idle_add()
   return FALSE;
}

static void
some_widget_do_stuff_later (SomeWidget *self)
{
   self->idle_id = gdk_threads_add_idle (idle_callback, self)
   // using g_idle_add() here would require thread protection in the callback
}

static void
some_widget_finalize (GObject *object)
{
   SomeWidget *self = SOME_WIDGET (object);
   if (self->idle_id)
     g_source_remove (self->idle_id);
   G_OBJECT_CLASS (parent_class)->finalize (object);
}

New in version 2.12.

Gdk.threads_add_timeout(priority, interval, function, *data)[source]
Parameters:
Returns:

the ID (greater than 0) of the event source.

Return type:

int

Sets a function to be called at regular intervals holding the GDK lock, with the given priority. The function is called repeatedly until it returns False, at which point the timeout is automatically destroyed and the function will not be called again. The notify function is called when the timeout is destroyed. The first call to the function will be at the end of the first interval.

Note that timeout functions may be delayed, due to the processing of other event sources. Thus they should not be relied on for precise timing. After each call to the timeout function, the time of the next timeout is recalculated based on the current time and the given interval (it does not try to “catch up” time lost in delays).

This variant of GLib.timeout_add() can be thought of a MT-safe version for GTK+ widgets for the following use case:

static gboolean timeout_callback (gpointer data)
{
   SomeWidget *self = data;

   // do stuff with self

   self->timeout_id = 0;

   return G_SOURCE_REMOVE;
}

static void some_widget_do_stuff_later (SomeWidget *self)
{
   self->timeout_id = g_timeout_add (timeout_callback, self)
}

static void some_widget_finalize (GObject *object)
{
   SomeWidget *self = SOME_WIDGET (object);

   if (self->timeout_id)
     g_source_remove (self->timeout_id);

   G_OBJECT_CLASS (parent_class)->finalize (object);
}

New in version 2.12.

Gdk.threads_add_timeout_seconds(priority, interval, function, *data)[source]
Parameters:
Returns:

the ID (greater than 0) of the event source.

Return type:

int

A variant of Gdk.threads_add_timeout() with second-granularity. See GLib.timeout_add_seconds() for a discussion of why it is a good idea to use this function if you don’t need finer granularity.

New in version 2.14.

Gdk.threads_enter()[source]

This function marks the beginning of a critical section in which GDK and GTK+ functions can be called safely and without causing race conditions. Only one thread at a time can be in such a critial section.

Deprecated since version 3.6: All GDK and GTK+ calls should be made from the main thread

Gdk.threads_init()[source]

Initializes GDK so that it can be used from multiple threads in conjunction with Gdk.threads_enter() and Gdk.threads_leave().

This call must be made before any use of the main loop from GTK+; to be safe, call it before gtk_init().

Deprecated since version 3.6: All GDK and GTK+ calls should be made from the main thread

Gdk.threads_leave()[source]

Leaves a critical region begun with Gdk.threads_enter().

Deprecated since version 3.6: All GDK and GTK+ calls should be made from the main thread

Gdk.unicode_to_keyval(wc)[source]
Parameters:wc (int) – a ISO10646 encoded character
Returns:the corresponding GDK key symbol, if one exists. or, if there is no corresponding symbol, wc | 0x01000000
Return type:int

Convert from a ISO10646 character to a key symbol.

Gdk.utf8_to_string_target(str)[source]
Parameters:str (str) – a UTF-8 string
Returns:the newly-allocated string, or None if the conversion failed. (It should not fail for any properly formed UTF-8 string unless system limits like memory or file descriptors are exceeded.)
Return type:str or None

Converts an UTF-8 string into the best possible representation as a STRING. The representation of characters not in STRING is not specified; it may be as pseudo-escape sequences \x{ABCD}, or it may be in some other form of approximation.