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XGrabKeyboard(3)		XLIB FUNCTIONS		      XGrabKeyboard(3)

NAME
       XGrabKeyboard, XUngrabKeyboard -	grab the keyboard

SYNTAX
       int XGrabKeyboard(Display *display, Window grab_window, Bool
	      owner_events, int	pointer_mode, int keyboard_mode, Time time);

       int XUngrabKeyboard(Display *display, Time time);

ARGUMENTS
       display	 Specifies the connection to the X server.

       grab_window
		 Specifies the grab window.

       keyboard_mode
		 Specifies further processing of keyboard events.  You can
		 pass GrabModeSync or GrabModeAsync.

       owner_events
		 Specifies a Boolean value that	indicates whether the keyboard
		 events	are to be reported as usual.

       pointer_mode
		 Specifies further processing of pointer events.  You can pass
		 GrabModeSync or GrabModeAsync.

       time	 Specifies the time.  You can pass either a timestamp or Cur-
		 rentTime.

DESCRIPTION
       The XGrabKeyboard function actively grabs control of the	keyboard and
       generates FocusIn and FocusOut events.  Further key events are reported
       only to the grabbing client.  XGrabKeyboard overrides any active	key-
       board grab by this client.  If owner_events is False, all generated key
       events are reported with	respect	to grab_window.	 If owner_events is
       True and	if a generated key event would normally	be reported to this
       client, it is reported normally;	otherwise, the event is	reported with
       respect to the grab_window.  Both KeyPress and KeyRelease events	are
       always reported,	independent of any event selection made	by the client.

       If the keyboard_mode argument is	GrabModeAsync, keyboard	event process-
       ing continues as	usual.	If the keyboard	is currently frozen by this
       client, then processing of keyboard events is resumed.  If the key-
       board_mode  argument is GrabModeSync, the state of the keyboard (as
       seen by client applications) appears to freeze, and the X server	gener-
       ates no further keyboard	events until the grabbing client issues	a re-
       leasing XAllowEvents call or until the keyboard grab is released.  Ac-
       tual keyboard changes are not lost while	the keyboard is	frozen;	they
       are simply queued in the	server for later processing.

       If pointer_mode is GrabModeAsync, pointer event processing is unaf-
       fected by activation of the grab.  If pointer_mode is GrabModeSync, the
       state of	the pointer (as	seen by	client applications) appears to
       freeze, and the X server	generates no further pointer events until the
       grabbing	client issues a	releasing XAllowEvents call or until the key-
       board grab is released.	Actual pointer changes are not lost while the
       pointer is frozen; they are simply queued in the	server for later pro-
       cessing.

       If the keyboard is actively grabbed by some other client, XGrabKeyboard
       fails and returns AlreadyGrabbed.  If grab_window is not	viewable, it
       fails and returns GrabNotViewable.  If the keyboard is frozen by	an ac-
       tive grab of another client, it fails and returns GrabFrozen.  If the
       specified time is earlier than the last-keyboard-grab time or later
       than the	current	X server time, it fails	and returns GrabInvalidTime.
       Otherwise, the last-keyboard-grab time is set to	the specified time
       (CurrentTime is replaced	by the current X server	time).

       XGrabKeyboard can generate BadValue and BadWindow errors.

       The XUngrabKeyboard function releases the keyboard and any queued
       events if this client has it actively grabbed from either XGrabKeyboard
       or XGrabKey.  XUngrabKeyboard does not release the keyboard and any
       queued events if	the specified time is earlier than the last-keyboard-
       grab time or is later than the current X	server time.  It also gener-
       ates FocusIn and	FocusOut events.  The X	server automatically performs
       an UngrabKeyboard request if the	event window for an active keyboard
       grab becomes not	viewable.

DIAGNOSTICS
       BadValue	 Some numeric value falls outside the range of values accepted
		 by the	request.  Unless a specific range is specified for an
		 argument, the full range defined by the argument's type is
		 accepted.  Any	argument defined as a set of alternatives can
		 generate this error.

       BadWindow A value for a Window argument does not	name a defined Window.

SEE ALSO
       XAllowEvents(3),	XGrabButton(3),	XGrabKey(3), XGrabPointer(3)
       Xlib - C	Language X Interface

X Version 11			 libX11	1.6.5		      XGrabKeyboard(3)

NAME | SYNTAX | ARGUMENTS | DESCRIPTION | DIAGNOSTICS | SEE ALSO

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