man/mann/tk_focusNext.n - toolchains/skids - Git at Google

 '\"
 '\" Copyright (c) 1994 The Regents of the University of California.
 '\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\"
 '\" RCS: @(#) $Id: focusNext.n,v 1.2 1998/09/14 18:22:56 stanton Exp $
 '\"
 '\" The definitions below are for supplemental macros used in Tcl/Tk
 '\" manual entries.
 '\"
 '\" .AP type name in/out ?indent?
 '\"	Start paragraph describing an argument to a library procedure.
 '\"	type is type of argument (int, etc.), in/out is either "in", "out",
 '\"	or "in/out" to describe whether procedure reads or modifies arg,
 '\"	and indent is equivalent to second arg of .IP (shouldn't ever be
 '\"	needed;  use .AS below instead)
 '\"
 '\" .AS ?type? ?name?
 '\"	Give maximum sizes of arguments for setting tab stops.  Type and
 '\"	name are examples of largest possible arguments that will be passed
 '\"	to .AP later.  If args are omitted, default tab stops are used.
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 '\"	options follow on successive lines, in four columns separated
 '\"	by tabs.
 '\"
 '\" .SE
 '\"	End of list of standard options for a Tk widget.
 '\"
 '\" .OP cmdName dbName dbClass
 '\"	Start of description of a specific option.  cmdName gives the
 '\"	option's name as specified in the class command, dbName gives
 '\"	the option's name in the option database, and dbClass gives
 '\"	the option's class in the option database.
 '\"
 '\" .UL arg1 arg2
 '\"	Print arg1 underlined, then print arg2 normally.
 '\"
 '\" RCS: @(#) $Id: man.macros,v 1.4 2000/08/25 06:18:32 ericm Exp $
 '\"
 '\"	# Set up traps and other miscellaneous stuff for Tcl/Tk man pages.
 .if t .wh -1.3i ^B
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 .de AP
 .ie !"\\$4"" .TP \\$4
 .el \{\
 .   ie !"\\$2"" .TP \\n()Cu
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 .\}
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 .ie !"\\$3"" \{\
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 .\".b
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 \h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul'
 .\}
 .el \}\
 \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul'
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 See the \\fBoptions\\fR manual entry for details on the standard options.
 ..
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 Command-Line Name:	\\fB\\$1\\fR
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 \\$1\l'|0\(ul'\\$2
 ..
 .TH tk_focusNext n 4.0 Tk "Tk Built-In Commands"
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
 tk_focusNext, tk_focusPrev, tk_focusFollowsMouse \- Utility procedures for managing the input focus.
 .SH SYNOPSIS
 \fBtk_focusNext \fIwindow\fR
 .sp
 \fBtk_focusPrev \fIwindow\fR
 .sp
 \fBtk_focusFollowsMouse\fR
 .BE

 .SH DESCRIPTION
 .PP
 \fBtk_focusNext\fR is a utility procedure used for keyboard traversal.
 It returns the ``next'' window after \fIwindow\fR in focus order.
 The focus order is determined by
 the stacking order of windows and the structure of the window hierarchy.
 Among siblings, the focus order is the same as the stacking order, with the
 lowest window being first.
 If a window has children, the window is visited first, followed by
 its children (recursively), followed by its next sibling.
 Top-level windows other than \fIwindow\fR are skipped, so that
 \fBtk_focusNext\fR never returns a window in a different top-level
 from \fIwindow\fR.
 .PP
 After computing the next window, \fBtk_focusNext\fR examines the
 window's \fB\-takefocus\fR option to see whether it should be skipped.
 If so, \fBtk_focusNext\fR continues on to the next window in the focus
 order, until it eventually finds a window that will accept the focus
 or returns back to \fIwindow\fR.
 .PP
 \fBtk_focusPrev\fR is similar to \fBtk_focusNext\fR except that it
 returns the window just before \fIwindow\fR in the focus order.
 .PP
 \fBtk_focusFollowsMouse\fR changes the focus model for the application
 to an implicit one where the window under the mouse gets the focus.
 After this procedure is called, whenever the mouse enters a window
 Tk will automatically give it the input focus.
 The \fBfocus\fR command may be used to move the focus to a window
 other than the one under the mouse, but as soon as the mouse moves
 into a new window the focus will jump to that window.
 Note: at present there is no built-in support for returning the
 application to an explicit focus model;  to do this you'll have
 to write a script that deletes the bindings created by
 \fBtk_focusFollowsMouse\fR.

 .SH KEYWORDS
 focus, keyboard traversal, top-level
	'\"
	'\" Copyright (c) 1994 The Regents of the University of California.
	'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
	'\"
	'\" See the file "license.terms" for information on usage and redistribution
	'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
	'\"
	'\" RCS: @(#) $Id: focusNext.n,v 1.2 1998/09/14 18:22:56 stanton Exp $
	'\"
	'\" The definitions below are for supplemental macros used in Tcl/Tk
	'\" manual entries.
	'\"
	'\" .AP type name in/out ?indent?
	'\" Start paragraph describing an argument to a library procedure.
	'\" type is type of argument (int, etc.), in/out is either "in", "out",
	'\" or "in/out" to describe whether procedure reads or modifies arg,
	'\" and indent is equivalent to second arg of .IP (shouldn't ever be
	'\" needed; use .AS below instead)
	'\"
	'\" .AS ?type? ?name?
	'\" Give maximum sizes of arguments for setting tab stops. Type and
	'\" name are examples of largest possible arguments that will be passed
	'\" to .AP later. If args are omitted, default tab stops are used.
	'\"
	'\" .BS
	'\" Start box enclosure. From here until next .BE, everything will be
	'\" enclosed in one large box.
	'\"
	'\" .BE
	'\" End of box enclosure.
	'\"
	'\" .CS
	'\" Begin code excerpt.
	'\"
	'\" .CE
	'\" End code excerpt.
	'\"
	'\" .VS ?version? ?br?
	'\" Begin vertical sidebar, for use in marking newly-changed parts
	'\" of man pages. The first argument is ignored and used for recording
	'\" the version when the .VS was added, so that the sidebars can be
	'\" found and removed when they reach a certain age. If another argument
	'\" is present, then a line break is forced before starting the sidebar.
	'\"
	'\" .VE
	'\" End of vertical sidebar.
	'\"
	'\" .DS
	'\" Begin an indented unfilled display.
	'\"
	'\" .DE
	'\" End of indented unfilled display.
	'\"
	'\" .SO
	'\" Start of list of standard options for a Tk widget. The
	'\" options follow on successive lines, in four columns separated
	'\" by tabs.
	'\"
	'\" .SE
	'\" End of list of standard options for a Tk widget.
	'\"
	'\" .OP cmdName dbName dbClass
	'\" Start of description of a specific option. cmdName gives the
	'\" option's name as specified in the class command, dbName gives
	'\" the option's name in the option database, and dbClass gives
	'\" the option's class in the option database.
	'\"
	'\" .UL arg1 arg2
	'\" Print arg1 underlined, then print arg2 normally.
	'\"
	'\" RCS: @(#) $Id: man.macros,v 1.4 2000/08/25 06:18:32 ericm Exp $
	'\"
	'\" # Set up traps and other miscellaneous stuff for Tcl/Tk man pages.
	.if t .wh -1.3i ^B
	.nr ^l \n(.l
	.ad b
	'\" # Start an argument description
	.de AP
	.ie !"\\$4"" .TP \\$4
	.el \{\
	. ie !"\\$2"" .TP \\n()Cu
	. el .TP 15
	.\}
	.ta \\n()Au \\n()Bu
	.ie !"\\$3"" \{\
	\&\\$1 \\fI\\$2\\fP (\\$3)
	.\".b
	.\}
	.el \{\
	.br
	.ie !"\\$2"" \{\
	\&\\$1 \\fI\\$2\\fP
	.\}
	.el \{\
	\&\\fI\\$1\\fP
	.\}
	.\}
	..
	'\" # define tabbing values for .AP
	.de AS
	.nr )A 10n
	.if !"\\$1"" .nr )A \\w'\\$1'u+3n
	.nr )B \\n()Au+15n
	.\"
	.if !"\\$2"" .nr )B \\w'\\$2'u+\\n()Au+3n
	.nr )C \\n()Bu+\\w'(in/out)'u+2n
	..
	.AS Tcl_Interp Tcl_CreateInterp in/out
	'\" # BS - start boxed text
	'\" # ^y = starting y location
	'\" # ^b = 1
	.de BS
	.br
	.mk ^y
	.nr ^b 1u
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	.if n \l'\\n(.lu\(ul'
	.if n .fi
	..
	'\" # BE - end boxed text (draw box now)
	.de BE
	.nf
	.ti 0
	.mk ^t
	.ie n \l'\\n(^lu\(ul'
	.el \{\
	.\" Draw four-sided box normally, but don't draw top of
	.\" box if the box started on an earlier page.
	.ie !\\n(^b-1 \{\
	\h'-1.5n'\L'\|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\l'\|0u-1.5n\(ul'
	.\}
	.el \}\
	\h'-1.5n'\L'\|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'\|0u-1.5n\(ul'
	.\}
	.\}
	.fi
	.br
	.nr ^b 0
	..
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	'\" # ^Y = starting y location
	'\" # ^v = 1 (for troff; for nroff this doesn't matter)
	.de VS
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	.el .nr ^v 1u
	..
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	\h'\|\\n(^lu+3n'\L'\|\\n(^Yu-1v\(bv'\v'\\n(^tu+1v-\\n(^Yu'\h'-\|\\n(^lu+3n'
	.sp -1
	.fi
	.ev
	.\}
	.nr ^v 0
	..
	'\" # Special macro to handle page bottom: finish off current
	'\" # box/sidebar if in box/sidebar mode, then invoked standard
	'\" # page bottom macro.
	.de ^B
	.ev 2
	'ti 0
	'nf
	.mk ^t
	.if \\n(^b \{\
	.\" Draw three-sided box if this is the box's first page,
	.\" draw two sides but no top otherwise.
	.ie !\\n(^b-1 \h'-1.5n'\L'\|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\h'\|0u'\c
	.el \h'-1.5n'\L'\|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\h'\|0u'\c
	.\}
	.if \\n(^v \{\
	.nr ^x \\n(^tu+1v-\\n(^Yu
	\kx\h'-\\nxu'\h'\|\\n(^lu+3n'\ky\L'-\\n(^xu'\v'\\n(^xu'\h'\|0u'\c
	.\}
	.bp
	'fi
	.ev
	.if \\n(^b \{\
	.mk ^y
	.nr ^b 2
	.\}
	.if \\n(^v \{\
	.mk ^Y
	.\}
	..
	'\" # DS - begin display
	.de DS
	.RS
	.nf
	.sp
	..
	'\" # DE - end display
	.de DE
	.fi
	.RE
	.sp
	..
	'\" # SO - start of list of standard options
	.de SO
	.SH "STANDARD OPTIONS"
	.LP
	.nf
	.ta 5.5c 11c
	.ft B
	..
	'\" # SE - end of list of standard options
	.de SE
	.fi
	.ft R
	.LP
	See the \\fBoptions\\fR manual entry for details on the standard options.
	..
	'\" # OP - start of full description for a single option
	.de OP
	.LP
	.nf
	.ta 4c
	Command-Line Name: \\fB\\$1\\fR
	Database Name: \\fB\\$2\\fR
	Database Class: \\fB\\$3\\fR
	.fi
	.IP
	..
	'\" # CS - begin code excerpt
	.de CS
	.RS
	.nf
	.ta .25i .5i .75i 1i
	..
	'\" # CE - end code excerpt
	.de CE
	.fi
	.RE
	..
	.de UL
	\\$1\l'\|0\(ul'\\$2
	..
	.TH tk_focusNext n 4.0 Tk "Tk Built-In Commands"
	.BS
	'\" Note: do not modify the .SH NAME line immediately below!
	.SH NAME
	tk_focusNext, tk_focusPrev, tk_focusFollowsMouse \- Utility procedures for managing the input focus.
	.SH SYNOPSIS
	\fBtk_focusNext \fIwindow\fR
	.sp
	\fBtk_focusPrev \fIwindow\fR
	.sp
	\fBtk_focusFollowsMouse\fR
	.BE

	.SH DESCRIPTION
	.PP
	\fBtk_focusNext\fR is a utility procedure used for keyboard traversal.
	It returns the ``next'' window after \fIwindow\fR in focus order.
	The focus order is determined by
	the stacking order of windows and the structure of the window hierarchy.
	Among siblings, the focus order is the same as the stacking order, with the
	lowest window being first.
	If a window has children, the window is visited first, followed by
	its children (recursively), followed by its next sibling.
	Top-level windows other than \fIwindow\fR are skipped, so that
	\fBtk_focusNext\fR never returns a window in a different top-level
	from \fIwindow\fR.
	.PP
	After computing the next window, \fBtk_focusNext\fR examines the
	window's \fB\-takefocus\fR option to see whether it should be skipped.
	If so, \fBtk_focusNext\fR continues on to the next window in the focus
	order, until it eventually finds a window that will accept the focus
	or returns back to \fIwindow\fR.
	.PP
	\fBtk_focusPrev\fR is similar to \fBtk_focusNext\fR except that it
	returns the window just before \fIwindow\fR in the focus order.
	.PP
	\fBtk_focusFollowsMouse\fR changes the focus model for the application
	to an implicit one where the window under the mouse gets the focus.
	After this procedure is called, whenever the mouse enters a window
	Tk will automatically give it the input focus.
	The \fBfocus\fR command may be used to move the focus to a window
	other than the one under the mouse, but as soon as the mouse moves
	into a new window the focus will jump to that window.
	Note: at present there is no built-in support for returning the
	application to an explicit focus model; to do this you'll have
	to write a script that deletes the bindings created by
	\fBtk_focusFollowsMouse\fR.

	.SH KEYWORDS
	focus, keyboard traversal, top-level