298 lines
8.0 KiB
Groff
298 lines
8.0 KiB
Groff
.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1994, 1996 X Consortium
|
|
.\"
|
|
.\" Permission is hereby granted, free of charge, to any person obtaining
|
|
.\" a copy of this software and associated documentation files (the
|
|
.\" "Software"), to deal in the Software without restriction, including
|
|
.\" without limitation the rights to use, copy, modify, merge, publish,
|
|
.\" distribute, sublicense, and/or sell copies of the Software, and to
|
|
.\" permit persons to whom the Software is furnished to do so, subject to
|
|
.\" the following conditions:
|
|
.\"
|
|
.\" The above copyright notice and this permission notice shall be included
|
|
.\" in all copies or substantial portions of the Software.
|
|
.\"
|
|
.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
.\" IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
|
.\" OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
.\" ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
.\" OTHER DEALINGS IN THE SOFTWARE.
|
|
.\"
|
|
.\" Except as contained in this notice, the name of the X Consortium shall
|
|
.\" not be used in advertising or otherwise to promote the sale, use or
|
|
.\" other dealings in this Software without prior written authorization
|
|
.\" from the X Consortium.
|
|
.\"
|
|
.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991 by
|
|
.\" Digital Equipment Corporation
|
|
.\"
|
|
.\" Portions Copyright \(co 1990, 1991 by
|
|
.\" Tektronix, Inc.
|
|
.\"
|
|
.\" Permission to use, copy, modify and distribute this documentation for
|
|
.\" any purpose and without fee is hereby granted, provided that the above
|
|
.\" copyright notice appears in all copies and that both that copyright notice
|
|
.\" and this permission notice appear in all copies, and that the names of
|
|
.\" Digital and Tektronix not be used in in advertising or publicity pertaining
|
|
.\" to this documentation without specific, written prior permission.
|
|
.\" Digital and Tektronix makes no representations about the suitability
|
|
.\" of this documentation for any purpose.
|
|
.\" It is provided ``as is'' without express or implied warranty.
|
|
.\"
|
|
.\"
|
|
.ds xT X Toolkit Intrinsics \- C Language Interface
|
|
.ds xW Athena X Widgets \- C Language X Toolkit Interface
|
|
.ds xL Xlib \- C Language X Interface
|
|
.ds xC Inter-Client Communication Conventions Manual
|
|
.na
|
|
.de Ds
|
|
.nf
|
|
.\\$1D \\$2 \\$1
|
|
.ft 1
|
|
.\".ps \\n(PS
|
|
.\".if \\n(VS>=40 .vs \\n(VSu
|
|
.\".if \\n(VS<=39 .vs \\n(VSp
|
|
..
|
|
.de De
|
|
.ce 0
|
|
.if \\n(BD .DF
|
|
.nr BD 0
|
|
.in \\n(OIu
|
|
.if \\n(TM .ls 2
|
|
.sp \\n(DDu
|
|
.fi
|
|
..
|
|
.de FD
|
|
.LP
|
|
.KS
|
|
.TA .5i 3i
|
|
.ta .5i 3i
|
|
.nf
|
|
..
|
|
.de FN
|
|
.fi
|
|
.KE
|
|
.LP
|
|
..
|
|
.de IN \" send an index entry to the stderr
|
|
..
|
|
.de C{
|
|
.KS
|
|
.nf
|
|
.D
|
|
.\"
|
|
.\" choose appropriate monospace font
|
|
.\" the imagen conditional, 480,
|
|
.\" may be changed to L if LB is too
|
|
.\" heavy for your eyes...
|
|
.\"
|
|
.ie "\\*(.T"480" .ft L
|
|
.el .ie "\\*(.T"300" .ft L
|
|
.el .ie "\\*(.T"202" .ft PO
|
|
.el .ie "\\*(.T"aps" .ft CW
|
|
.el .ft R
|
|
.ps \\n(PS
|
|
.ie \\n(VS>40 .vs \\n(VSu
|
|
.el .vs \\n(VSp
|
|
..
|
|
.de C}
|
|
.DE
|
|
.R
|
|
..
|
|
.de Pn
|
|
.ie t \\$1\fB\^\\$2\^\fR\\$3
|
|
.el \\$1\fI\^\\$2\^\fP\\$3
|
|
..
|
|
.de ZN
|
|
.ie t \fB\^\\$1\^\fR\\$2
|
|
.el \fI\^\\$1\^\fP\\$2
|
|
..
|
|
.de hN
|
|
.ie t <\fB\\$1\fR>\\$2
|
|
.el <\fI\\$1\fP>\\$2
|
|
..
|
|
.de NT
|
|
.ne 7
|
|
.ds NO Note
|
|
.if \\n(.$>$1 .if !'\\$2'C' .ds NO \\$2
|
|
.if \\n(.$ .if !'\\$1'C' .ds NO \\$1
|
|
.ie n .sp
|
|
.el .sp 10p
|
|
.TB
|
|
.ce
|
|
\\*(NO
|
|
.ie n .sp
|
|
.el .sp 5p
|
|
.if '\\$1'C' .ce 99
|
|
.if '\\$2'C' .ce 99
|
|
.in +5n
|
|
.ll -5n
|
|
.R
|
|
..
|
|
. \" Note End -- doug kraft 3/85
|
|
.de NE
|
|
.ce 0
|
|
.in -5n
|
|
.ll +5n
|
|
.ie n .sp
|
|
.el .sp 10p
|
|
..
|
|
.ny0
|
|
.TH XGrabKeyboard __libmansuffix__ __xorgversion__ "XLIB FUNCTIONS"
|
|
.SH NAME
|
|
XGrabKeyboard, XUngrabKeyboard \- grab the keyboard
|
|
.SH SYNTAX
|
|
.HP
|
|
int XGrabKeyboard\^(\^Display *\fIdisplay\fP\^, Window \fIgrab_window\fP\^,
|
|
Bool \fIowner_events\fP\^, int \fIpointer_mode\fP\^, int
|
|
\fIkeyboard_mode\fP\^, Time \fItime\fP\^);
|
|
.HP
|
|
int XUngrabKeyboard\^(\^Display *\fIdisplay\fP\^, Time \fItime\fP\^);
|
|
.SH ARGUMENTS
|
|
.IP \fIdisplay\fP 1i
|
|
Specifies the connection to the X server.
|
|
.IP \fIgrab_window\fP 1i
|
|
Specifies the grab window.
|
|
.IP \fIkeyboard_mode\fP 1i
|
|
Specifies further processing of keyboard events.
|
|
You can pass
|
|
.ZN GrabModeSync
|
|
or
|
|
.ZN GrabModeAsync .
|
|
.IP \fIowner_events\fP 1i
|
|
Specifies a Boolean value that indicates whether the keyboard events
|
|
are to be reported as usual.
|
|
.IP \fIpointer_mode\fP 1i
|
|
Specifies further processing of pointer events.
|
|
You can pass
|
|
.ZN GrabModeSync
|
|
or
|
|
.ZN GrabModeAsync .
|
|
.IP \fItime\fP 1i
|
|
Specifies the time.
|
|
You can pass either a timestamp or
|
|
.ZN CurrentTime .
|
|
.SH DESCRIPTION
|
|
The
|
|
.ZN XGrabKeyboard
|
|
function actively grabs control of the keyboard and generates
|
|
.ZN FocusIn
|
|
and
|
|
.ZN FocusOut
|
|
events.
|
|
Further key events are reported only to the
|
|
grabbing client.
|
|
.ZN XGrabKeyboard
|
|
overrides any active keyboard grab by this client.
|
|
If owner_events is
|
|
.ZN False ,
|
|
all generated key events are reported with
|
|
respect to grab_window.
|
|
If owner_events is
|
|
.ZN 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
|
|
.ZN KeyPress
|
|
and
|
|
.ZN KeyRelease
|
|
events are always reported,
|
|
independent of any event selection made by the client.
|
|
.LP
|
|
If the keyboard_mode argument is
|
|
.ZN GrabModeAsync ,
|
|
keyboard event processing continues
|
|
as usual.
|
|
If the keyboard is currently frozen by this client,
|
|
then processing of keyboard events is resumed.
|
|
If the keyboard_mode argument is
|
|
.ZN GrabModeSync ,
|
|
the state of the keyboard (as seen by client applications) appears to freeze,
|
|
and the X server generates no further keyboard events until the
|
|
grabbing client issues a releasing
|
|
.ZN XAllowEvents
|
|
call or until the keyboard grab is released.
|
|
Actual keyboard changes are not lost while the keyboard is frozen;
|
|
they are simply queued in the server for later processing.
|
|
.LP
|
|
If pointer_mode is
|
|
.ZN GrabModeAsync ,
|
|
pointer event processing is unaffected
|
|
by activation of the grab.
|
|
If pointer_mode is
|
|
.ZN 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
|
|
.ZN XAllowEvents
|
|
call or until the keyboard grab is released.
|
|
Actual pointer changes are not lost while the pointer is frozen;
|
|
they are simply queued in the server for later processing.
|
|
.LP
|
|
If the keyboard is actively grabbed by some other client,
|
|
.ZN XGrabKeyboard
|
|
fails and returns
|
|
.ZN AlreadyGrabbed .
|
|
If grab_window is not viewable,
|
|
it fails and returns
|
|
.ZN GrabNotViewable .
|
|
If the keyboard is frozen by an active grab of another client,
|
|
it fails and returns
|
|
.ZN 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
|
|
.ZN GrabInvalidTime .
|
|
Otherwise, the last-keyboard-grab time is set to the specified time
|
|
.Pn ( CurrentTime
|
|
is replaced by the current X server time).
|
|
.LP
|
|
.ZN XGrabKeyboard
|
|
can generate
|
|
.ZN BadValue
|
|
and
|
|
.ZN BadWindow
|
|
errors.
|
|
.LP
|
|
The
|
|
.ZN XUngrabKeyboard
|
|
function
|
|
releases the keyboard and any queued events if this client has it actively grabbed from
|
|
either
|
|
.ZN XGrabKeyboard
|
|
or
|
|
.ZN XGrabKey .
|
|
.ZN 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 generates
|
|
.ZN FocusIn
|
|
and
|
|
.ZN FocusOut
|
|
events.
|
|
The X server automatically performs an
|
|
.ZN UngrabKeyboard
|
|
request if the event window for an
|
|
active keyboard grab becomes not viewable.
|
|
.SH DIAGNOSTICS
|
|
.TP 1i
|
|
.ZN 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.
|
|
.TP 1i
|
|
.ZN BadWindow
|
|
A value for a Window argument does not name a defined Window.
|
|
.SH "SEE ALSO"
|
|
XAllowEvents(__libmansuffix__),
|
|
XGrabButton(__libmansuffix__),
|
|
XGrabKey(__libmansuffix__),
|
|
XGrabPointer(__libmansuffix__)
|
|
.br
|
|
\fI\*(xL\fP
|