2006-11-25 09:33:55 -07:00
|
|
|
.\" 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 XNextEvent __libmansuffix__ __xorgversion__ "XLIB FUNCTIONS"
|
|
|
|
|
.SH NAME
|
|
|
|
|
XNextEvent, XPeekEvent, XWindowEvent, XCheckWindowEvent, XMaskEvent, XCheckMaskEvent, XCheckTypedEvent, XCheckTypedWindowEvent \- select events by type
|
|
|
|
|
.SH SYNTAX
|
|
|
|
|
.HP
|
|
|
|
|
int XNextEvent\^(\^Display *\fIdisplay\fP\^, XEvent *\fIevent_return\fP\^);
|
|
|
|
|
.HP
|
|
|
|
|
int XPeekEvent\^(\^Display *\fIdisplay\fP\^, XEvent *\fIevent_return\fP\^);
|
|
|
|
|
.HP
|
|
|
|
|
int XWindowEvent\^(\^Display *\fIdisplay\fP\^, Window \fIw\fP\^, long
|
|
|
|
|
\fIevent_mask\fP\^, XEvent *\fIevent_return\fP\^);
|
|
|
|
|
.HP
|
|
|
|
|
Bool XCheckWindowEvent\^(\^Display *\fIdisplay\fP\^, Window \fIw\fP\^, long
|
|
|
|
|
\fIevent_mask\fP\^, XEvent *\fIevent_return\fP\^);
|
|
|
|
|
.HP
|
|
|
|
|
int XMaskEvent\^(\^Display *\fIdisplay\fP\^, long \fIevent_mask\fP\^, XEvent
|
|
|
|
|
*\fIevent_return\fP\^);
|
|
|
|
|
.HP
|
|
|
|
|
Bool XCheckMaskEvent\^(\^Display *\fIdisplay\fP\^, long \fIevent_mask\fP\^,
|
|
|
|
|
XEvent *\fIevent_return\fP\^);
|
|
|
|
|
.HP
|
|
|
|
|
Bool XCheckTypedEvent\^(\^Display *\fIdisplay\fP\^, int \fIevent_type\fP\^,
|
|
|
|
|
XEvent *\fIevent_return\fP\^);
|
|
|
|
|
.HP
|
|
|
|
|
Bool XCheckTypedWindowEvent\^(\^Display *\fIdisplay\fP\^, Window \fIw\fP\^,
|
|
|
|
|
int \fIevent_type\fP\^, XEvent *\fIevent_return\fP\^);
|
|
|
|
|
.SH ARGUMENTS
|
|
|
|
|
.IP \fIdisplay\fP 1i
|
|
|
|
|
Specifies the connection to the X server.
|
|
|
|
|
.IP \fIevent_mask\fP 1i
|
|
|
|
|
Specifies the event mask.
|
|
|
|
|
.IP \fIevent_return\fP 1i
|
|
|
|
|
Returns the matched event's associated structure.
|
|
|
|
|
.IP \fIevent_return\fP 1i
|
|
|
|
|
Returns the next event in the queue.
|
|
|
|
|
.IP \fIevent_return\fP 1i
|
|
|
|
|
Returns a copy of the matched event's associated structure.
|
|
|
|
|
.IP \fIevent_type\fP 1i
|
|
|
|
|
Specifies the event type to be compared.
|
|
|
|
|
|
|
|
|
|
.ds Wi \ whose event uou are interested in
|
|
|
|
|
.IP \fIw\fP 1i
|
|
|
|
|
Specifies the window \*(Wi.
|
|
|
|
|
.SH DESCRIPTION
|
|
|
|
|
The
|
|
|
|
|
.ZN XNextEvent
|
|
|
|
|
function copies the first event from the event queue into the specified
|
|
|
|
|
.ZN XEvent
|
|
|
|
|
structure and then removes it from the queue.
|
|
|
|
|
If the event queue is empty,
|
|
|
|
|
.ZN XNextEvent
|
|
|
|
|
flushes the output buffer and blocks until an event is received.
|
|
|
|
|
.LP
|
|
|
|
|
The
|
|
|
|
|
.ZN XPeekEvent
|
|
|
|
|
function returns the first event from the event queue,
|
|
|
|
|
but it does not remove the event from the queue.
|
|
|
|
|
If the queue is empty,
|
|
|
|
|
.ZN XPeekEvent
|
|
|
|
|
flushes the output buffer and blocks until an event is received.
|
|
|
|
|
It then copies the event into the client-supplied
|
|
|
|
|
.ZN XEvent
|
|
|
|
|
structure without removing it from the event queue.
|
|
|
|
|
.LP
|
|
|
|
|
The
|
|
|
|
|
.ZN XWindowEvent
|
|
|
|
|
function searches the event queue for an event that matches both the specified
|
|
|
|
|
window and event mask.
|
|
|
|
|
When it finds a match,
|
|
|
|
|
.ZN XWindowEvent
|
|
|
|
|
removes that event from the queue and copies it into the specified
|
|
|
|
|
.ZN XEvent
|
|
|
|
|
structure.
|
|
|
|
|
The other events stored in the queue are not discarded.
|
|
|
|
|
If a matching event is not in the queue,
|
|
|
|
|
.ZN XWindowEvent
|
|
|
|
|
flushes the output buffer and blocks until one is received.
|
|
|
|
|
.LP
|
|
|
|
|
The
|
|
|
|
|
.ZN XCheckWindowEvent
|
|
|
|
|
function searches the event queue and then the events available
|
|
|
|
|
on the server connection for the first event that matches the specified window
|
|
|
|
|
and event mask.
|
|
|
|
|
If it finds a match,
|
|
|
|
|
.ZN XCheckWindowEvent
|
|
|
|
|
removes that event, copies it into the specified
|
|
|
|
|
.ZN XEvent
|
|
|
|
|
structure, and returns
|
|
|
|
|
.ZN True .
|
|
|
|
|
The other events stored in the queue are not discarded.
|
|
|
|
|
If the event you requested is not available,
|
|
|
|
|
.ZN XCheckWindowEvent
|
|
|
|
|
returns
|
|
|
|
|
.ZN False ,
|
|
|
|
|
and the output buffer will have been flushed.
|
|
|
|
|
.LP
|
|
|
|
|
The
|
|
|
|
|
.ZN XMaskEvent
|
|
|
|
|
function searches the event queue for the events associated with the
|
|
|
|
|
specified mask.
|
|
|
|
|
When it finds a match,
|
|
|
|
|
.ZN XMaskEvent
|
|
|
|
|
removes that event and copies it into the specified
|
|
|
|
|
.ZN XEvent
|
|
|
|
|
structure.
|
|
|
|
|
The other events stored in the queue are not discarded.
|
|
|
|
|
If the event you requested is not in the queue,
|
|
|
|
|
.ZN XMaskEvent
|
|
|
|
|
flushes the output buffer and blocks until one is received.
|
|
|
|
|
.LP
|
|
|
|
|
The
|
|
|
|
|
.ZN XCheckMaskEvent
|
|
|
|
|
function searches the event queue and then any events available on the
|
|
|
|
|
server connection for the first event that matches the specified mask.
|
|
|
|
|
If it finds a match,
|
|
|
|
|
.ZN XCheckMaskEvent
|
|
|
|
|
removes that event, copies it into the specified
|
|
|
|
|
.ZN XEvent
|
|
|
|
|
structure, and returns
|
|
|
|
|
.ZN True .
|
|
|
|
|
The other events stored in the queue are not discarded.
|
|
|
|
|
If the event you requested is not available,
|
|
|
|
|
.ZN XCheckMaskEvent
|
|
|
|
|
returns
|
|
|
|
|
.ZN False ,
|
|
|
|
|
and the output buffer will have been flushed.
|
|
|
|
|
.LP
|
|
|
|
|
The
|
|
|
|
|
.ZN XCheckTypedEvent
|
|
|
|
|
function searches the event queue and then any events available
|
|
|
|
|
on the server connection for the first event that matches the specified type.
|
|
|
|
|
If it finds a match,
|
|
|
|
|
.ZN XCheckTypedEvent
|
|
|
|
|
removes that event, copies it into the specified
|
|
|
|
|
.ZN XEvent
|
|
|
|
|
structure, and returns
|
|
|
|
|
.ZN True .
|
|
|
|
|
The other events in the queue are not discarded.
|
|
|
|
|
If the event is not available,
|
|
|
|
|
.ZN XCheckTypedEvent
|
|
|
|
|
returns
|
|
|
|
|
.ZN False ,
|
|
|
|
|
and the output buffer will have been flushed.
|
|
|
|
|
.LP
|
|
|
|
|
The
|
|
|
|
|
.ZN XCheckTypedWindowEvent
|
|
|
|
|
function searches the event queue and then any events available
|
|
|
|
|
on the server connection for the first event that matches the specified
|
|
|
|
|
type and window.
|
|
|
|
|
If it finds a match,
|
|
|
|
|
.ZN XCheckTypedWindowEvent
|
|
|
|
|
removes the event from the queue, copies it into the specified
|
|
|
|
|
.ZN XEvent
|
|
|
|
|
structure, and returns
|
|
|
|
|
.ZN True .
|
|
|
|
|
The other events in the queue are not discarded.
|
|
|
|
|
If the event is not available,
|
|
|
|
|
.ZN XCheckTypedWindowEvent
|
|
|
|
|
returns
|
|
|
|
|
.ZN False ,
|
|
|
|
|
and the output buffer will have been flushed.
|
|
|
|
|
.SH "SEE ALSO"
|
2010-05-18 13:37:28 -06:00
|
|
|
XAnyEvent(__libmansuffix__),
|
|
|
|
|
XIfEvent(__libmansuffix__),
|
|
|
|
|
XPutBackEvent(__libmansuffix__),
|
|
|
|
|
XSendEvent(__libmansuffix__)
|
2006-11-25 09:33:55 -07:00
|
|
|
.br
|
|
|
|
|
\fI\*(xL\fP
|
