193 lines
4.7 KiB
Groff
193 lines
4.7 KiB
Groff
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.\" $Xorg: XtSetKFoc.man,v 1.3 2000/08/17 19:42:02 cpqbld Exp $
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.\"
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.\" Copyright 1993 X Consortium
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.\"
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.\" Permission is hereby granted, free of charge, to any person obtaining
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.\" a copy of this software and associated documentation files (the
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.\" "Software"), to deal in the Software without restriction, including
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.\" without limitation the rights to use, copy, modify, merge, publish,
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.\" distribute, sublicense, and/or sell copies of the Software, and to
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.\" permit persons to whom the Software is furnished to do so, subject to
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.\" the following conditions:
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.\"
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.\" The above copyright notice and this permission notice shall be
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.\" included in all copies or substantial portions of the Software.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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.\" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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.\" IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
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.\" OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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.\" ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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.\" OTHER DEALINGS IN THE SOFTWARE.
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.\"
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.\" Except as contained in this notice, the name of the X Consortium shall
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.\" not be used in advertising or otherwise to promote the sale, use or
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.\" other dealings in this Software without prior written authorization
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.\" from the X Consortium.
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.\"
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.\" $XFree86: xc/doc/man/Xt/XtSetKFoc.man,v 1.3 2002/10/12 16:06:41 herrb Exp $
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.\"
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.ds tk X Toolkit
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.ds xT X Toolkit Intrinsics \- C Language Interface
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.ds xI Intrinsics
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.ds xW X Toolkit Athena Widgets \- C Language Interface
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.ds xL Xlib \- C Language X Interface
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.ds xC Inter-Client Communication Conventions Manual
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.ds Rn 3
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.ds Vn 2.2
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.hw XtSet-Keyboard-Focus wid-get
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.na
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.de Ds
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.nf
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.\\$1D \\$2 \\$1
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.ft 1
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.ps \\n(PS
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.\".if \\n(VS>=40 .vs \\n(VSu
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.\".if \\n(VS<=39 .vs \\n(VSp
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..
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.de De
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.ce 0
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.if \\n(BD .DF
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.nr BD 0
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.in \\n(OIu
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.if \\n(TM .ls 2
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.sp \\n(DDu
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.fi
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..
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.de FD
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.LP
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.KS
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.TA .5i 3i
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.KE
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.LP
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.de IN \" send an index entry to the stderr
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..
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.de C{
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.KS
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.nf
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.D
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.\"
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.\" choose appropriate monospace font
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.\" the imagen conditional, 480,
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.\" may be changed to L if LB is too
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.\" heavy for your eyes...
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.\"
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.ie "\\*(.T"480" .ft L
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.el .ie "\\*(.T"300" .ft L
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.el .ie "\\*(.T"202" .ft PO
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.el .ie "\\*(.T"aps" .ft CW
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.el .ft R
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.ps \\n(PS
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.el .vs \\n(VSp
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.de C}
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.DE
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.R
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..
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.de Pn
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.ie t \\$1\fB\^\\$2\^\fR\\$3
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.el \\$1\fI\^\\$2\^\fP\\$3
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..
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.de ZN
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.ie t \fB\^\\$1\^\fR\\$2
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.el \fI\^\\$1\^\fP\\$2
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.de NT
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.ds NO Note
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.if \\n(.$>$1 .if !'\\$2'C' .ds NO \\$2
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.if \\n(.$ .if !'\\$1'C' .ds NO \\$1
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.ie n .sp
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.el .sp 10p
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.TB
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.ce
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\\*(NO
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.if '\\$1'C' .ce 99
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.if '\\$2'C' .ce 99
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.in +5n
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.ll -5n
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.R
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..
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. \" Note End -- doug kraft 3/85
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.de NE
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.ce 0
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.in -5n
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.ie n .sp
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.el .sp 10p
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..
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.ny0
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.TH XtSetKeyboardFocus __libmansuffix__ __xorgversion__ "XT FUNCTIONS"
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.SH NAME
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XtSetKeyboardFocus \- focus events on a child widget
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.SH SYNTAX
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.HP
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XtSetKeyboardFocus(Widget \fIsubtree\fP, Widget \fIdescendant\fP);
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.SH ARGUMENTS
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.IP \fIsubtree\fP 1i
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Specifies either the widget in the subtree structure which is to receive the
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keyboard event, or
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.ZN None .
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Note that it is not an error to specify
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.ZN None
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when no input focus was previously set.
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.ds Wi for which the keyboard focus is to be set
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.IP \fIdescendant\fP 1i
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Specifies the widget \*(Wi.
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.SH DESCRIPTION
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If a future
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.ZN KeyPress
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or
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.ZN KeyRelease
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event occurs within the specified subtree,
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.ZN XtSetKeyboardFocus
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causes
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.ZN XtDispatchEvent
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to remap and send the event to the specified descendant widget.
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.LP
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When there is no modal cascade,
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keyboard events can occur within a widget W in one of three ways:
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.IP \(bu 5
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W has the X input focus.
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.IP \(bu 5
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W has the keyboard focus of one of its ancestors,
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and the event occurs within the ancestor or one of the ancestor's descendants.
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.IP \(bu 5
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No ancestor of W has a descendant within the keyboard focus,
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and the pointer is within W.
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.LP
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When there is a modal cascade,
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a widget W receives keyboard events if an ancestor of W is in the active
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subset of the modal cascade and one or more of the previous conditions is
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.ZN True .
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.LP
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When subtree or one of its descendants acquires the X input focus
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or the pointer moves into the subtree such that keyboard events would
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now be delivered to subtree, a
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.ZN FocusIn
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event is generated for the descendant if
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.ZN FocusNotify
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events have been selected by the descendant.
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Similarly, when W loses the X input focus
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or the keyboard focus for one of its ancestors, a
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.ZN FocusOut
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event is generated for descendant if
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.ZN FocusNotify
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events have been selected by the descendant.
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.SH "SEE ALSO"
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XtCallAcceptFocus(3Xt)
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.br
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\fI\*(xT\fP
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.br
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\fI\*(xL\fP
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