Gdk::Display Class Reference

Gdk::Display object's purpose is two fold: To grab/ungrab keyboard focus and mouse pointer To manage and provide information about the Gdk::Screen(s) available for this Gdk::Display. More...

Inherits Glib::Object.

Collaboration diagram for Gdk::Display:

[legend]

List of all members.

Public Member Functions
virtual	~Display ()
GdkDisplay*	gobj ()
	Provides access to the underlying C GObject.
const GdkDisplay*	gobj () const
	Provides access to the underlying C GObject.
GdkDisplay*	gobj_copy ()
	Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.
Glib::ustring	get_name () const
	Gets the name of the display.
int	get_n_screens () const
	Gets the number of screen managed by the display.
Glib::RefPtr< Screen >	get_screen (int screen_num)
	Returns a screen object for one of the screens of the display.
Glib::RefPtr< const Screen >	get_screen (int screen_num) const
	Returns a screen object for one of the screens of the display.
Glib::RefPtr< Screen >	get_default_screen ()
	Get the default Gdk::Screen for display.
Glib::RefPtr< const Screen >	get_default_screen () const
	Get the default Gdk::Screen for display.
void	pointer_ungrab (guint32 timestamp)
	Release any pointer grab.
void	keyboard_ungrab (guint32 timestamp)
	Release any keyboard grab.
bool	pointer_is_grabbed () const
	Test if the pointer is grabbed.
void	beep ()
	Emits a short beep on display.
void	sync ()
	Flushes any requests queued for the windowing system and waits until all requests have been handled.
void	close ()
	Closes the connection to the windowing system for the given display, and cleans up associated resources.
Glib::ListHandle< Glib::RefPtr < Device > >	list_devices ()
	Returns the list of available input devices attached to display.
Glib::ListHandle< Glib::RefPtr < const Device > >	list_devices () const
	Returns the list of available input devices attached to display.
GdkEvent*	get_event ()
	Gets the next Gdk::Event to be processed for display, fetching events from the windowing system if necessary.
const GdkEvent*	get_event () const
	Gets the next Gdk::Event to be processed for display, fetching events from the windowing system if necessary.
GdkEvent*	peek_event ()
	Gets a copy of the first Gdk::Event in the display's event queue, without removing the event from the queue.
GdkEvent*	peek_event () const
	Gets a copy of the first Gdk::Event in the display's event queue, without removing the event from the queue.
void	put_event (GdkEvent* event)
	Appends a copy of the given event onto the front of the event queue for display.
void	add_client_message_filter (Glib::ustring& message_type, GdkFilterFunc func, gpointer data)
	Adds a filter to be called when X ClientMessage events are received.
void	set_double_click_time (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).
void	set_double_click_distance (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).
Glib::RefPtr< Device >	get_core_pointer ()
	Returns the core pointer device for the given display.
Glib::RefPtr< const Device >	get_core_pointer () const
	Returns the core pointer device for the given display.
void	get_pointer (Glib::RefPtr< Screen >& screen, int& x, int& y, ModifierType& mask)
	Gets the current location of the pointer and the current modifier mask for a given display.
void	get_pointer (int& x, int& y, ModifierType& mask)
	Gets the current location of the pointer and the current modifier mask for a given display.
Glib::RefPtr< Window >	get_window_at_pointer (int& win_x, int& 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.
Glib::RefPtr< const Window >	get_window_at_pointer (int& win_x, int& win_y) const
	Obtains the window underneath the mouse pointer, returning the location of the pointer in that window in win_x, win_y for screen.
Glib::RefPtr< Window >	get_window_at_pointer ()
	Obtains the window underneath the mouse pointer.
Glib::RefPtr< const Window >	get_window_at_pointer () const
	Obtains the window underneath the mouse pointer.
void	warp_pointer (const Glib::RefPtr< Screen >& screen, int x, int y)
	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.
GdkDisplayPointerHooks*	set_pointer_hooks (const GdkDisplayPointerHooks* new_hooks)
	This function allows for hooking into the operation of getting the current location of the pointer on a particular display.
GdkDisplayPointerHooks*	unset_pointer_hooks ()
GdkNativeWindow	get_drag_protocol (GdkNativeWindow xid, GdkDragProtocol& protocol)
	Finds out the DND protocol supported by a window.
GdkKeymap*	get_keymap ()
	Returns the Gdk::Keymap attached to display.
const GdkKeymap*	get_keymap () const
	Returns the Gdk::Keymap attached to display.
bool	set_selection_owner (const Glib::RefPtr< Window >& owner, Glib::ustring& selection, guint32 time_, bool send_event)
Glib::RefPtr< Window >	get_selection_owner (const Glib::ustring& selection)
void	selection_send_notify (GdkNativeWindow requestor, Glib::ustring& selection, Glib::ustring& target, Glib::ustring& property, guint32 time_)
	Send a response to SelectionRequest event.
Glib::RefPtr< Pixmap >	lookup_pixmap (NativeWindow anid)
	Looks up the Gdk::Pixmap that wraps the given native pixmap handle.
Glib::RefPtr< const Pixmap >	lookup_pixmap (NativeWindow anid) const
	Looks up the Gdk::Pixmap that wraps the given native pixmap handle.
void	flush ()
	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 explicitely.
bool	supports_cursor_alpha () const
	Returns `true` if cursors can use an 8bit alpha channel on display.
bool	supports_cursor_color () const
	Returns `true` if multicolored cursors are supported on display.
guint	get_default_cursor_size () const
	Returns the default size to use for cursors on display.
void	get_maximal_cursor_size (guint& width, guint& height)
	Gets the maximal size to use for cursors on display.
Glib::RefPtr< Window >	get_default_group ()
	Returns the default group leader window for all toplevel windows on display.
Glib::RefPtr< const Window >	get_default_group () const
	Returns the default group leader window for all toplevel windows on display.
bool	supports_selection_notification () const
	Returns whether Gdk::EventOwnerChange events will be sent when the owner of a selection changes.
bool	request_selection_notification (const Glib::ustring& selection)
	Request Gdk::EventOwnerChange events for ownership changes of the selection named by the given atom.
bool	supports_clipboard_persistence () const
	Returns whether the speicifed display supports clipboard persistance; i.e. if it's possible to store the clipboard data after an application has quit.
void	store_clipboard (const Glib::RefPtr< Gdk::Window >& clipboard_window, guint32 time_)
	Issues a request to the clipboard manager to store the clipboard data, saving all available targets.
void	store_clipboard (const Glib::RefPtr< Gdk::Window >& clipboard_window, guint32 time_, const Glib::StringArrayHandle& targets)
bool	supports_shapes () const
	Returns `true` if gdk_window_shape_combine_mask() can be used to create shaped windows on display.
bool	supports_input_shapes () const
	Returns `true` if gdk_window_input_shape_combine_mask() can be used to modify the input shape of windows on display.
bool	supports_composite () const
	Returns `true` if gdk_window_set_composited() can be used to redirect drawing on the window using compositing.
Glib::SignalProxy1< void, bool >	signal_closed ()
	The closed signal is emitted when the connection to the windowing system for this display is closed.
Static Public Member Functions
static Glib::RefPtr< Display >	open (const Glib::ustring& display_name)
	Opens a display.
static Glib::RefPtr< Display >	get_default ()
	Gets the default Gdk::Display.
static Glib::RefPtr< Display >	open_default_libgtk_only ()
	Opens the default display specified by command line arguments or environment variables, sets it as the default display, and returns it.
Protected Member Functions
	Display ()
virtual void	on_closed (bool is_error)
Related Functions
(Note that these are not member functions.)
Glib::RefPtr< Gdk::Display >	wrap (GdkDisplay* object, bool take_copy=false)
	A Glib::wrap() method for this object.

Detailed Description

Gdk::Display object's purpose is two fold: To grab/ungrab keyboard focus and mouse pointer To manage and provide information about the Gdk::Screen(s) available for this Gdk::Display.

Gdk::Display objects are the GDK representation of the X Display which can be described as a workstation consisting of a keyboard a pointing device (such as a mouse) and one or more screens. It is used to open and keep track of various Gdk::Screen objects currently instantiated by the application. It is also used to grab and release the keyboard and the mouse pointer.

Constructor & Destructor Documentation

virtual Gdk::Display::~Display ( ) [virtual]

Gdk::Display::Display ( ) [protected]

Member Function Documentation

void Gdk::Display::add_client_message_filter	(	Glib::ustring &	message_type,
		GdkFilterFunc	func,
		gpointer	data
	)

Adds a filter to be called when X ClientMessage events are received.

See gdk_window_add_filter() if you are interested in filtering other types of events.

Since gtkmm 2.2:

Parameters:

	message_type	The type of ClientMessage events to receive. This will be checked against the message_type field of the XClientMessage event struct.
	func	The function to call to process the event.
	data	User data to pass to func.

void Gdk::Display::beep ( )

Emits a short beep on display.

Since gtkmm 2.2:

void Gdk::Display::close ( )

Closes the connection to the windowing system for the given display, and cleans up associated resources.

Since gtkmm 2.2:

void Gdk::Display::flush ( )

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 explicitely.

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 gtkmm 2.4:

Glib::RefPtr<const Device> Gdk::Display::get_core_pointer ( ) const

Returns the core pointer device for the given display.

Since gtkmm 2.2:

Returns:: The core pointer device; this is owned by the display and should not be freed.

Glib::RefPtr<Device> Gdk::Display::get_core_pointer ( )

Returns the core pointer device for the given display.

Since gtkmm 2.2:

Returns:: The core pointer device; this is owned by the display and should not be freed.

static Glib::RefPtr<Display> Gdk::Display::get_default ( ) [static]

Gets the default Gdk::Display.

This is a convenience function for <literal>gdk_display_manager_get_default_display (manager_get())</literal>.

Since gtkmm 2.2:

Returns:: A Gdk::Display, or 0 if there is no default display.

guint Gdk::Display::get_default_cursor_size ( ) const

Returns the default size to use for cursors on display.

Since gtkmm 2.4:

Returns:: The default cursor size.

Glib::RefPtr<const Window> Gdk::Display::get_default_group ( ) const

Returns the default group leader window for all toplevel windows on display.

This window is implicitly created by GDK. See gdk_window_set_group().

Since gtkmm 2.4:

Returns:: The default group leader window for display.

Glib::RefPtr<Window> Gdk::Display::get_default_group ( )

Returns the default group leader window for all toplevel windows on display.

This window is implicitly created by GDK. See gdk_window_set_group().

Since gtkmm 2.4:

Returns:: The default group leader window for display.

Glib::RefPtr<const Screen> Gdk::Display::get_default_screen ( ) const

Get the default Gdk::Screen for display.

Since gtkmm 2.2:

Returns:: The default Gdk::Screen object for display.

Glib::RefPtr<Screen> Gdk::Display::get_default_screen ( )

Get the default Gdk::Screen for display.

Since gtkmm 2.2:

Returns:: The default Gdk::Screen object for display.

GdkNativeWindow Gdk::Display::get_drag_protocol	(	GdkNativeWindow	xid,
		GdkDragProtocol &	protocol
	)

Finds out the DND protocol supported by a window.

Since gtkmm 2.2:

Parameters:

	xid	The windowing system id of the destination window.
	protocol	Location where the supported DND protocol is returned.

Returns:: The windowing system id of the window where the drop should happen. This may be xid or the id of a proxy window, or zero if xid doesn't support Drag and Drop.

const GdkEvent* Gdk::Display::get_event ( ) const

Gets the next Gdk::Event to be processed for display, fetching events from the windowing system if necessary.

Since gtkmm 2.2:

Returns:: The next Gdk::Event to be processed, or 0 if no events are pending. The returned Gdk::Event should be freed with gdk_event_free().

GdkEvent* Gdk::Display::get_event ( )

Gets the next Gdk::Event to be processed for display, fetching events from the windowing system if necessary.

Since gtkmm 2.2:

Returns:: The next Gdk::Event to be processed, or 0 if no events are pending. The returned Gdk::Event should be freed with gdk_event_free().

const GdkKeymap* Gdk::Display::get_keymap ( ) const

Returns the Gdk::Keymap attached to display.

Since gtkmm 2.2:

Returns:: The Gdk::Keymap attached to display.

GdkKeymap* Gdk::Display::get_keymap ( )

Returns the Gdk::Keymap attached to display.

Since gtkmm 2.2:

Returns:: The Gdk::Keymap attached to display.

void Gdk::Display::get_maximal_cursor_size	(	guint &	width,
		guint &	height
	)

Gets the maximal size to use for cursors on display.

Since gtkmm 2.4:

Parameters:

	width	The return location for the maximal cursor width.
	height	The return location for the maximal cursor height.

int Gdk::Display::get_n_screens ( ) const

Gets the number of screen managed by the display.

Since gtkmm 2.2:

Returns:: Number of screens.

Glib::ustring Gdk::Display::get_name ( ) const

Gets the name of the display.

Since gtkmm 2.2:

Returns:: A string representing the display name. This string is owned by GDK and should not be modified or freed.

void Gdk::Display::get_pointer	(	int &	x,
		int &	y,
		ModifierType&	mask
	)

Gets the current location of the pointer and the current modifier mask for a given display.

Parameters:

	x	location to store root window X coordinate of pointer.
	y	location to store root window Y coordinate of pointer.
	mask	location to store current modifier mask.

void Gdk::Display::get_pointer	(	Glib::RefPtr< Screen >&	screen,
		int &	x,
		int &	y,
		ModifierType&	mask
	)

Gets the current location of the pointer and the current modifier mask for a given display.

Parameters:

	screen	location to store the screen that the cursor is on.
	x	location to store root window X coordinate of pointer.
	y	location to store root window Y coordinate of pointer.
	mask	location to store current modifier mask.

Glib::RefPtr<const Screen> Gdk::Display::get_screen ( int screen_num ) const

Returns a screen object for one of the screens of the display.

Since gtkmm 2.2:

Parameters:

screen_num

The screen number.

Returns:: The Gdk::Screen object.

Glib::RefPtr<Screen> Gdk::Display::get_screen ( int screen_num )

Returns a screen object for one of the screens of the display.

Since gtkmm 2.2:

Parameters:

screen_num

The screen number.

Returns:: The Gdk::Screen object.

Glib::RefPtr<Window> Gdk::Display::get_selection_owner ( const Glib::ustring & selection )

Glib::RefPtr<const Window> Gdk::Display::get_window_at_pointer ( ) const

Obtains the window underneath the mouse pointer.

Returns a null RefPtr if the window under the mouse pointer is not known to GDK (for example, belongs to another application).

Returns:: The window underneath the mouse pointer.

Glib::RefPtr<Window> Gdk::Display::get_window_at_pointer ( )

Obtains the window underneath the mouse pointer.

Returns a null RefPtr if the window under the mouse pointer is not known to GDK (for example, belongs to another application).

Returns:: The window underneath the mouse pointer.

Glib::RefPtr<const Window> Gdk::Display::get_window_at_pointer	(	int &	win_x,
		int &	win_y
	)			const

Obtains the window underneath the mouse pointer, returning the location of the pointer in that window in win_x, win_y for screen.

Returns 0 if the window under the mouse pointer is not known to GDK (for example, belongs to another application).

Since gtkmm 2.2:

Parameters:

	win_x	Return location for x coordinate of the pointer location relative to the window origin, or `0`.
	win_y	Return location for y coordinate of the pointer location relative & to the window origin, or `0`.

Returns:: The window under the mouse pointer, or 0.

Glib::RefPtr<Window> Gdk::Display::get_window_at_pointer	(	int &	win_x,
		int &	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 0 if the window under the mouse pointer is not known to GDK (for example, belongs to another application).

Since gtkmm 2.2:

Parameters:

	win_x	Return location for x coordinate of the pointer location relative to the window origin, or `0`.
	win_y	Return location for y coordinate of the pointer location relative & to the window origin, or `0`.

Returns:: The window under the mouse pointer, or 0.

const GdkDisplay* Gdk::Display::gobj ( ) const [inline]

Provides access to the underlying C GObject.

Reimplemented from Glib::ObjectBase.

GdkDisplay* Gdk::Display::gobj ( ) [inline]

Provides access to the underlying C GObject.

Reimplemented from Glib::ObjectBase.

GdkDisplay* Gdk::Display::gobj_copy ( )

Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.

void Gdk::Display::keyboard_ungrab ( guint32 timestamp )

Release any keyboard grab.

Since gtkmm 2.2:

Parameters:

timestamp

A timestap (e.g Gdk::CURRENT_TIME).

Glib::ListHandle< Glib::RefPtr<const Device> > Gdk::Display::list_devices ( ) const

Returns the list of available input devices attached to display.

The list is statically allocated and should not be freed.

Since gtkmm 2.2:

Returns:: A list of Gdk::Device.

Glib::ListHandle< Glib::RefPtr<Device> > Gdk::Display::list_devices ( )

Returns the list of available input devices attached to display.

The list is statically allocated and should not be freed.

Since gtkmm 2.2:

Returns:: A list of Gdk::Device.

Glib::RefPtr<const Pixmap> Gdk::Display::lookup_pixmap ( NativeWindow anid ) const

Looks up the Gdk::Pixmap that wraps the given native pixmap handle.

For example in the X backend, a native pixmap handle is an Xlib <type>XID</type>.

Since gtkmm 2.2:

Parameters:

anid

A native pixmap handle.

Returns:: The Gdk::Pixmap wrapper for the native pixmap, or 0 if there is none.

Glib::RefPtr<Pixmap> Gdk::Display::lookup_pixmap ( NativeWindow anid )

Looks up the Gdk::Pixmap that wraps the given native pixmap handle.

For example in the X backend, a native pixmap handle is an Xlib <type>XID</type>.

Since gtkmm 2.2:

Parameters:

anid

A native pixmap handle.

Returns:: The Gdk::Pixmap wrapper for the native pixmap, or 0 if there is none.

virtual void Gdk::Display::on_closed ( bool is_error ) [protected, virtual]

static Glib::RefPtr<Display> Gdk::Display::open ( const Glib::ustring & display_name ) [static]

Opens a display.

Since gtkmm 2.2:

Parameters:

display_name

The name of the display to open.

Returns:: A Gdk::Display, or 0 if the display could not be opened.

static Glib::RefPtr<Display> Gdk::Display::open_default_libgtk_only ( ) [static]

Opens the default display specified by command line arguments or environment variables, sets it as the default display, and returns it.

gdk_parse_args must have been called first. If the default display has previously been set, simply returns that. An internal function that should not be used by applications.

Returns:: The default display, if it could be opened, otherwise 0.

GdkEvent* Gdk::Display::peek_event ( ) const

Gets a copy of the first Gdk::Event 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 gtkmm 2.2:

Returns:: A copy of the first Gdk::Event on the event queue, or 0 if no events are in the queue. The returned Gdk::Event should be freed with gdk_event_free().

GdkEvent* Gdk::Display::peek_event ( )

Gets a copy of the first Gdk::Event 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 gtkmm 2.2:

Returns:: A copy of the first Gdk::Event on the event queue, or 0 if no events are in the queue. The returned Gdk::Event should be freed with gdk_event_free().

bool Gdk::Display::pointer_is_grabbed ( ) const

Test if the pointer is grabbed.

Since gtkmm 2.2:

Returns:: true if an active X pointer grab is in effect.

void Gdk::Display::pointer_ungrab ( guint32 timestamp )

Release any pointer grab.

Since gtkmm 2.2:

Parameters:

timestamp

A timestap (e.g. GDK_CURRENT_TIME).

void Gdk::Display::put_event ( GdkEvent * event )

Appends a copy of the given event onto the front of the event queue for display.

Since gtkmm 2.2:

Parameters:

event

A Gdk::Event.

bool Gdk::Display::request_selection_notification ( const Glib::ustring & selection )

Request Gdk::EventOwnerChange events for ownership changes of the selection named by the given atom.

Since gtkmm 2.6:

Parameters:

selection

The Gdk::Atom naming the selection for which ownership change notification is requested.

Returns:: Whether Gdk::EventOwnerChange events will be sent.

void Gdk::Display::selection_send_notify	(	GdkNativeWindow	requestor,
		Glib::ustring &	selection,
		Glib::ustring &	target,
		Glib::ustring &	property,
		guint32	time_
	)

Send a response to SelectionRequest event.

Since gtkmm 2.2:

Parameters:

	requestor	Window to which to deliver response.
	selection	Selection that was requested.
	target	Target that was selected.
	property	Property in which the selection owner stored the data, or "None" to indicate that the request was rejected.
	time_	Timestamp.

void Gdk::Display::set_double_click_distance ( 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 set_double_click_time(). Applications should <emphasis>not</emphasis> set this, it is a global user-configured setting.

Since gtkmm 2.4:

Parameters:

distance

Distance in pixels.

void Gdk::Display::set_double_click_time ( 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 <emphasis>not</emphasis> set this, it is a global user-configured setting.

Since gtkmm 2.2:

Parameters:

msec

Double click time in milliseconds (thousandths of a second).

GdkDisplayPointerHooks* Gdk::Display::set_pointer_hooks ( const GdkDisplayPointerHooks * new_hooks )

This function allows for hooking into the operation of getting the current location of the pointer on a particular display.

This is only useful for such low-level tools as an event recorder. Applications should never have any reason to use this facility.

Since gtkmm 2.2:

Parameters:

new_hooks

A table of pointers to functions for getting quantities related to the current pointer position.

Returns:: The previous pointer hook table.

bool Gdk::Display::set_selection_owner	(	const Glib::RefPtr< Window >&	owner,
		Glib::ustring &	selection,
		guint32	time_,
		bool	send_event
	)

Glib::SignalProxy1< void,bool > Gdk::Display::signal_closed ( )

The closed signal is emitted when the connection to the windowing system for this display is closed.

Parameters:

is_error

true if the display was closed due to an error

Prototype:: void on_my_closed(bool is_error)

void Gdk::Display::store_clipboard	(	const Glib::RefPtr< Gdk::Window >&	clipboard_window,
		guint32	time_,
		const Glib::StringArrayHandle &	targets
	)

void Gdk::Display::store_clipboard	(	const Glib::RefPtr< Gdk::Window >&	clipboard_window,
		guint32	time_
	)

Issues a request to the clipboard manager to store the clipboard data, saving all available targets.

On X11, this is a special program that works according to the freedesktop clipboard specification, available at http://www.freedesktop.org/Standards/clipboard-manager-spec.

Since gtkmm 2.6:

Parameters:

	clipboard_window	A Gdk::Window belonging to the clipboard owner.
	time_	A timestamp.

bool Gdk::Display::supports_clipboard_persistence ( ) const

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.

Since gtkmm 2.6:

Returns:: true if the display supports clipboard persistance.

bool Gdk::Display::supports_composite ( ) const

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.

Since gtkmm 2.12:

Returns:: true if windows may be composited.

bool Gdk::Display::supports_cursor_alpha ( ) const

Returns true if cursors can use an 8bit alpha channel on display.

Otherwise, cursors are restricted to bilevel alpha (i.e. a mask).

Since gtkmm 2.4:

Returns:: Whether cursors can have alpha channels.

bool Gdk::Display::supports_cursor_color ( ) const

Returns true if multicolored cursors are supported on display.

Otherwise, cursors have only a forground and a background color.

Since gtkmm 2.4:

Returns:: Whether cursors can have multiple colors.

bool Gdk::Display::supports_input_shapes ( ) const

Returns true if gdk_window_input_shape_combine_mask() can be used to modify the input shape of windows on display.

Since gtkmm 2.10:

Returns:: true if windows with modified input shape are supported.

bool Gdk::Display::supports_selection_notification ( ) const

Returns whether Gdk::EventOwnerChange events will be sent when the owner of a selection changes.

Since gtkmm 2.6:

Returns:: Whether Gdk::EventOwnerChange events will be sent.

bool Gdk::Display::supports_shapes ( ) const

Returns true if gdk_window_shape_combine_mask() can be used to create shaped windows on display.

Since gtkmm 2.10:

Returns:: true if shaped windows are supported.

void Gdk::Display::sync ( )

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 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 gtkmm 2.2:

GdkDisplayPointerHooks* Gdk::Display::unset_pointer_hooks ( )

void Gdk::Display::warp_pointer	(	const Glib::RefPtr< Screen >&	screen,
		int	x,
		int	y
	)

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 Gtk::ColorSelectionDialog.

Since gtkmm 2.8:

Parameters:

	screen	The screen of display to warp the pointer to.
	x	The x coordinate of the destination.
	y	The y coordinate of the destination.

Friends And Related Function Documentation

Glib::RefPtr< Gdk::Display > wrap	(	GdkDisplay *	object,
		bool	take_copy = `false`
	)			`[related]`

A Glib::wrap() method for this object.

Parameters:

	object	The C instance.
	take_copy	False if the result should take ownership of the C instance. True if it should take a new copy or ref.

Returns:: A C++ instance that wraps this C instance.

The documentation for this class was generated from the following file:

gdkmm/display.h

Gdk::Display Class Reference

Public Member Functions

Static Public Member Functions

Protected Member Functions

Related Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation