xcb_ungrab_key(3) [centos man page]

xcb_ungrab_key(3)						   XCB Requests 						 xcb_ungrab_key(3)

NAME

       xcb_ungrab_key - release a key combination

SYNOPSIS

       #include <xcb/xproto.h>

   Request function
       xcb_void_cookie_t xcb_ungrab_key(xcb_connection_t *conn, xcb_keycode_t key, xcb_window_t grab_window, uint16_t modifiers);

REQUEST ARGUMENTS

       conn	 The XCB connection to X11.

       key	 The keycode of the specified key combination.

		 Using the special value XCB_GRAB_ANY means releasing all possible key codes.

       grab_window
		 The window on which the grabbed key combination will be released.

       modifiers The modifiers of the specified key combination.

		 Using the special value XCB_MOD_MASK_ANY means releasing the key combination with every possible modifier combination.

DESCRIPTION

       Releases the key combination on grab_window if you grabbed it using xcb_grab_key before.

RETURN VALUE

       Returns an xcb_void_cookie_t. Errors (if any) have to be handled in the event loop.

       If you want to handle errors directly with xcb_request_check instead, use xcb_ungrab_key_checked. See xcb-requests(3) for details.

ERRORS

       xcb_window_error_t
		 The specified grab_window does not exist.

       xcb_value_error_t
		 TODO: reasons?

SEE ALSO

       xcb-requests(3), xev(1), xcb_grab_key(3)

AUTHOR

       Generated from xproto.xml. Contact xcb@lists.freedesktop.org for corrections and improvements.

XCB
								    2014-06-10							 xcb_ungrab_key(3)

xcb_grab_key(3) 						   XCB Requests 						   xcb_grab_key(3)

NAME

       xcb_grab_key - Grab keyboard key(s)

SYNOPSIS

       #include <xcb/xproto.h>

   Request function
       xcb_void_cookie_t xcb_grab_key(xcb_connection_t *conn, uint8_t owner_events, xcb_window_t grab_window, uint16_t modifiers,
	      xcb_keycode_t key, uint8_t pointer_mode, uint8_t keyboard_mode);

REQUEST ARGUMENTS

       conn	 The XCB connection to X11.

       owner_events
		 If 1, the grab_window will still get the pointer events. If 0, events are not reported to the grab_window.

       grab_window
		 Specifies the window on which the pointer should be grabbed.

       modifiers The modifiers to grab.

		 Using the special value XCB_MOD_MASK_ANY means grab the pointer with all possible modifier combinations.

       key	 The keycode of the key to grab.

		 The special value XCB_GRAB_ANY means grab any key.

       pointer_mode
		 One of the following values:

		 XCB_GRAB_MODE_SYNC
			   The state of the keyboard appears to freeze: No further keyboard events are generated by the server until the grabbing
			   client issues a releasing AllowEvents request or until the keyboard grab is released.

		 XCB_GRAB_MODE_ASYNC
			   Keyboard event processing continues normally.

       keyboard_mode
		 One of the following values:

		 XCB_GRAB_MODE_SYNC
			   The state of the keyboard appears to freeze: No further keyboard events are generated by the server until the grabbing
			   client issues a releasing AllowEvents request or until the keyboard grab is released.

		 XCB_GRAB_MODE_ASYNC
			   Keyboard event processing continues normally.

DESCRIPTION

       Establishes a passive grab on the keyboard. In the future, the keyboard is actively grabbed (as for GrabKeyboard), the last-keyboard-grab
       time is set to the time at which the key was pressed (as transmitted in the KeyPress event), and the KeyPress event is reported if all of
       the following conditions are true:

       The keyboard is not grabbed and the specified key (which can itself be a modifier key) is logically pressed when the specified modifier
       keys are logically down, and no other modifier keys are logically down.

       Either the grab_window is an ancestor of (or is) the focus window, or the grab_window is a descendant of the focus window and contains the
       pointer.

       A passive grab on the same key combination does not exist on any ancestor of grab_window.

       The interpretation of the remaining arguments is as for XGrabKeyboard.  The active grab is terminated automatically when the logical state
       of the keyboard has the specified key released (independent of the logical state of the modifier keys), at which point a KeyRelease event
       is reported to the grabbing window.

       Note that the logical state of a device (as seen by client applications) may lag the physical state if device event processing is frozen.

       A modifiers argument of AnyModifier is equivalent to issuing the request for all possible modifier combinations (including the combination
       of no modifiers).  It is not required that all modifiers specified have currently assigned KeyCodes.  A keycode argument of AnyKey is
       equivalent to issuing the request for all possible KeyCodes.  Otherwise, the specified keycode must be in the range specified by min_key-
       code and max_keycode in the connection setup, or a BadValue error results.

       If some other client has issued a XGrabKey with the same key combination on the same window, a BadAccess error results.	When using AnyMod-
       ifier or AnyKey, the request fails completely, and a BadAccess error results (no grabs are established) if there is a conflicting grab for
       any combination.

RETURN VALUE

       Returns an xcb_void_cookie_t. Errors (if any) have to be handled in the event loop.

       If you want to handle errors directly with xcb_request_check instead, use xcb_grab_key_checked. See xcb-requests(3) for details.

ERRORS

       xcb_access_error_t
		 Another client has already issued a GrabKey with the same button/key combination on the same window.

       xcb_window_error_t
		 The specified window does not exist.

       xcb_value_error_t
		 TODO: reasons?

SEE ALSO

       xcb-requests(3), xcb_grab_keyboard(3)

AUTHOR

       Generated from xproto.xml. Contact xcb@lists.freedesktop.org for corrections and improvements.

XCB
								    2014-06-10							   xcb_grab_key(3)