359 lines
9.9 KiB
Plaintext
359 lines
9.9 KiB
Plaintext
.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 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 XGrabPointer 3X11 "Release 5" "X Version 11" "XLIB FUNCTIONS"
|
|
.SH NAME
|
|
XGrabPointer, XUngrabPointer, XChangeActivePointerGrab \- grab the pointer
|
|
.SH SYNTAX
|
|
.\" $Header: XGrabPointer.f,v 1.1 88/02/26 10:01:06 mento Exp $
|
|
int XGrabPointer\^(\^\fIdisplay\fP, \fIgrab_window\fP\^, \fIowner_events\fP\^, \fIevent_mask\fP\^, \fIpointer_mode\fP\^,
|
|
\fIkeyboard_mode\fP\^, \fIconfine_to\fP\^, \fIcursor\fP\^, \fItime\fP\^)
|
|
.br
|
|
Display *\fIdisplay\fP\^;
|
|
.br
|
|
Window \fIgrab_window\fP\^;
|
|
.br
|
|
Bool \fIowner_events\fP\^;
|
|
.br
|
|
unsigned int \fIevent_mask\fP\^;
|
|
.br
|
|
int \fIpointer_mode\fP\^, \fIkeyboard_mode\fP\^;
|
|
.br
|
|
Window \fIconfine_to\fP\^;
|
|
.br
|
|
Cursor \fIcursor\fP\^;
|
|
.br
|
|
Time \fItime\fP\^;
|
|
.LP
|
|
.\" $Header: XUngrabPntr.f,v 1.1 88/02/26 10:04:06 mento Exp $
|
|
XUngrabPointer\^(\^\fIdisplay\fP, \fItime\fP\^)
|
|
.br
|
|
Display *\fIdisplay\fP\^;
|
|
.br
|
|
Time \fItime\fP\^;
|
|
.LP
|
|
.\" $Header: XChActPGrab.f,v 1.1 88/02/26 09:58:29 mento Exp $
|
|
XChangeActivePointerGrab\^(\^\fIdisplay\fP, \fIevent_mask\fP\^, \fIcursor\fP\^, \fItime\fP\^)
|
|
.br
|
|
Display *\fIdisplay\fP\^;
|
|
.br
|
|
unsigned int \fIevent_mask\fP\^;
|
|
.br
|
|
Cursor \fIcursor\fP\^;
|
|
.br
|
|
Time \fItime\fP\^;
|
|
.SH ARGUMENTS
|
|
.\" $Header: confineto.a,v 1.2 88/05/14 07:01:28 mento Exp $
|
|
.IP \fIconfine_to\fP 1i
|
|
Specifies the window to confine the pointer in or
|
|
.ZN None .
|
|
.\" $Header: cursor_grab.a,v 1.2 88/04/06 14:23:01 mento Exp $
|
|
.IP \fIcursor\fP 1i
|
|
Specifies the cursor that is to be displayed during the grab or
|
|
.ZN None .
|
|
.\" $Header: display.a,v 1.1 88/02/26 10:26:29 mento Exp $
|
|
.IP \fIdisplay\fP 1i
|
|
Specifies the connection to the X server.
|
|
.\" $Header: pointermask.a,v 1.3 88/05/14 07:34:39 mento Exp $
|
|
.IP \fIevent_mask\fP 1i
|
|
Specifies which pointer events are reported to the client.
|
|
The mask is the bitwise inclusive OR of the valid pointer event mask bits.
|
|
.IP \fIgrab_window\fP 1i
|
|
Specifies the grab window.
|
|
.\" $Header: keybdmode.a,v 1.3 88/04/06 14:22:10 mento Exp $
|
|
.IP \fIkeyboard_mode\fP 1i
|
|
Specifies further processing of keyboard events.
|
|
You can pass
|
|
.ZN GrabModeSync
|
|
or
|
|
.ZN GrabModeAsync .
|
|
.\" $Header: ownerevents2.a,v 1.3 88/05/14 07:32:25 mento Exp $
|
|
.IP \fIowner_events\fP 1i
|
|
Specifies a Boolean value that indicates whether the pointer
|
|
events are to be reported as usual or reported with respect to the grab window
|
|
if selected by the event mask.
|
|
.\" $Header: pointermode.a,v 1.3 88/04/06 14:21:24 mento Exp $
|
|
.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
|
|
.\" $Header: XGrabPointer.d,v 1.3 88/08/19 20:19:16 mento Exp $
|
|
The
|
|
.ZN XGrabPointer
|
|
function actively grabs control of the pointer and returns
|
|
.ZN GrabSuccess
|
|
if the grab was successful.
|
|
Further pointer events are reported only to the grabbing client.
|
|
.ZN XGrabPointer
|
|
overrides any active pointer grab by this client.
|
|
If owner_events is
|
|
.ZN False ,
|
|
all generated pointer events
|
|
are reported with respect to grab_window and are reported only if
|
|
selected by event_mask.
|
|
If owner_events is
|
|
.ZN True
|
|
and if a generated
|
|
pointer event would normally be reported to this client,
|
|
it is reported as usual.
|
|
Otherwise, the event is reported with respect to the
|
|
grab_window and is reported only if selected by event_mask.
|
|
For either value of owner_events, unreported events are discarded.
|
|
.LP
|
|
If the pointer_mode is
|
|
.ZN GrabModeAsync ,
|
|
pointer event processing continues as usual.
|
|
If the pointer is currently frozen by this client,
|
|
the processing of events for the pointer is resumed.
|
|
If the 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 calls
|
|
.ZN XAllowEvents
|
|
or until the pointer 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_mode is
|
|
.ZN GrabModeAsync ,
|
|
keyboard event processing is unaffected by activation of the grab.
|
|
If the keyboard_mode 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 calls
|
|
.ZN XAllowEvents
|
|
or until the pointer grab is released.
|
|
Actual keyboard changes are not lost while the pointer is frozen;
|
|
they are simply queued in the server for later processing.
|
|
.LP
|
|
If a cursor is specified, it is displayed regardless of what
|
|
window the pointer is in.
|
|
If
|
|
.ZN None
|
|
is specified,
|
|
the normal cursor for that window is displayed
|
|
when the pointer is in grab_window or one of its subwindows;
|
|
otherwise, the cursor for grab_window is displayed.
|
|
.LP
|
|
If a confine_to window is specified,
|
|
the pointer is restricted to stay contained in that window.
|
|
The confine_to window need have no relationship to the grab_window.
|
|
If the pointer is not initially in the confine_to window,
|
|
it is warped automatically to the closest edge
|
|
just before the grab activates and enter/leave events are generated as usual.
|
|
If the confine_to window is subsequently reconfigured,
|
|
the pointer is warped automatically, as necessary,
|
|
to keep it contained in the window.
|
|
.LP
|
|
The time argument allows you to avoid certain circumstances that come up
|
|
if applications take a long time to respond or if there are long network
|
|
delays.
|
|
Consider a situation where you have two applications, both
|
|
of which normally grab the pointer when clicked on.
|
|
If both applications specify the timestamp from the event,
|
|
the second application may wake up faster and successfully grab the pointer
|
|
before the first application.
|
|
The first application then will get an indication that the other application
|
|
grabbed the pointer before its request was processed.
|
|
.LP
|
|
.ZN XGrabPointer
|
|
generates
|
|
.ZN EnterNotify
|
|
and
|
|
.ZN LeaveNotify
|
|
events.
|
|
.LP
|
|
Either if grab_window or confine_to window is not viewable
|
|
or if the confine_to window lies completely outside the boundaries of the root
|
|
window,
|
|
.ZN XGrabPointer
|
|
fails and returns
|
|
.ZN GrabNotViewable .
|
|
If the pointer is actively grabbed by some other client,
|
|
it fails and returns
|
|
.ZN AlreadyGrabbed .
|
|
If the pointer is frozen by an active grab of another client,
|
|
it fails and returns
|
|
.ZN GrabFrozen .
|
|
If the specified time is earlier than the last-pointer-grab time or later
|
|
than the current X server time, it fails and returns
|
|
.ZN GrabInvalidTime .
|
|
Otherwise, the last-pointer-grab time is set to the specified time
|
|
.Pn ( CurrentTime
|
|
is replaced by the current X server time).
|
|
.LP
|
|
.ZN XGrabPointer
|
|
can generate
|
|
.ZN BadCursor ,
|
|
.ZN BadValue ,
|
|
and
|
|
.ZN BadWindow
|
|
errors.
|
|
.LP
|
|
.\" $Header: XUngrabPntr.d,v 1.4 88/08/19 20:21:36 mento Exp $
|
|
The
|
|
.ZN XUngrabPointer
|
|
function releases the pointer and any queued events
|
|
if this client has actively grabbed the pointer from
|
|
.ZN XGrabPointer ,
|
|
.ZN XGrabButton ,
|
|
or from a normal button press.
|
|
.ZN XUngrabPointer
|
|
does not release the pointer if the specified
|
|
time is earlier than the last-pointer-grab time or is later than the
|
|
current X server time.
|
|
It also generates
|
|
.ZN EnterNotify
|
|
and
|
|
.ZN LeaveNotify
|
|
events.
|
|
The X server performs an
|
|
.ZN UngrabPointer
|
|
request automatically if the event window or confine_to window
|
|
for an active pointer grab becomes not viewable
|
|
or if window reconfiguration causes the confine_to window to lie completely
|
|
outside the boundaries of the root window.
|
|
.LP
|
|
.\" $Header: XChActPGrab.d,v 1.2 88/06/11 07:48:55 mento Exp $
|
|
The
|
|
.ZN XChangeActivePointerGrab
|
|
function changes the specified dynamic parameters if the pointer is actively
|
|
grabbed by the client and if the specified time is no earlier than the
|
|
last-pointer-grab time and no later than the current X server time.
|
|
This function has no effect on the passive parameters of a
|
|
.ZN XGrabButton .
|
|
The interpretation of event_mask and cursor is the same as described in
|
|
.ZN XGrabPointer .
|
|
.LP
|
|
.ZN XChangeActivePointerGrab
|
|
can generate a
|
|
.ZN BadCursor
|
|
and
|
|
.ZN BadValue
|
|
error.
|
|
.SH DIAGNOSTICS
|
|
.\" $Header: badcursor.e,v 1.1 87/09/04 08:22:58 mento Exp $
|
|
.TP 1i
|
|
.ZN BadCursor
|
|
A value for a Cursor argument does not name a defined Cursor.
|
|
.\" $Header: badvalue.e,v 1.1 87/09/04 08:23:19 mento Exp $
|
|
.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.
|
|
.\" $Header: badwindow.e,v 1.1 87/09/04 08:23:20 mento Exp $
|
|
.TP 1i
|
|
.ZN BadWindow
|
|
A value for a Window argument does not name a defined Window.
|
|
.SH "SEE ALSO"
|
|
XAllowEvents(3X11),
|
|
XGrabButton(3X11),
|
|
XGrabKey(3X11),
|
|
XGrabKeyboard(3X11)
|
|
.br
|
|
\fI\*(xL\fP
|