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

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 '\" RCS: @(#) $Id: selection.n,v 1.4 2001/06/04 03:15:20 hobbs Exp $
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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.
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 .LP
 See the \\fBoptions\\fR manual entry for details on the standard options.
 ..
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 Command-Line Name:	\\fB\\$1\\fR
 Database Name:	\\fB\\$2\\fR
 Database Class:	\\fB\\$3\\fR
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 .TH selection n 8.1 Tk "Tk Built-In Commands"
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
 selection \- Manipulate the X selection
 .SH SYNOPSIS
 \fBselection \fIoption\fR ?\fIarg arg ...\fR?
 .BE

 .SH DESCRIPTION
 .PP
 This command provides a Tcl interface to the X selection mechanism and
 implements the full selection functionality described in the
 X Inter-Client Communication Conventions Manual (ICCCM).
 .PP
 Note that for management of the CLIPBOARD selection (see below), the
 \fBclipboard\fR command may also be used.
 .PP
 The first argument to \fBselection\fR determines the format of the
 rest of the arguments and the behavior of the command.  The following
 forms are currently supported:
 .PP
 .TP
 \fBselection clear\fR ?\fB\-displayof\fR \fIwindow\fR? ?\fB\-selection\fR \fIselection\fR?
 If \fIselection\fR exists anywhere on \fIwindow\fR's display, clear it
 so that no window owns the selection anymore.  \fISelection\fR
 specifies the X selection that should be cleared, and should be an
 atom name such as PRIMARY or CLIPBOARD; see the Inter-Client
 Communication Conventions Manual for complete details.
 \fISelection\fR defaults to PRIMARY and \fIwindow\fR defaults to ``.''.
 Returns an empty string.
 .TP
 \fBselection get\fR ?\fB\-displayof\fR \fIwindow\fR? ?\fB\-selection\fR \fIselection\fR? ?\fB\-type\fR \fItype\fR?
 Retrieves the value of \fIselection\fR from \fIwindow\fR's display and
 returns it as a result.  \fISelection\fR defaults to PRIMARY and
 \fIwindow\fR defaults to ``.''.
 \fIType\fR specifies the form in which the selection is to be returned
 (the desired ``target'' for conversion, in ICCCM terminology), and
 should be an atom name such as STRING or FILE_NAME; see the
 Inter-Client Communication Conventions Manual for complete details.
 \fIType\fR defaults to STRING.  The selection owner may choose to
 return the selection in any of several different representation
 formats, such as STRING, ATOM, INTEGER, etc. (this format is different
 than the selection type; see the ICCCM for all the confusing details).
 If the selection is returned in a non-string format, such as INTEGER
 or ATOM, the \fBselection\fR command converts it to string format as a
 collection of fields separated by spaces: atoms are converted to their
 textual names, and anything else is converted to hexadecimal integers.
 .TP
 \fBselection handle\fR ?\fB\-selection\fR \fIselection\fR? ?\fB\-type\fR \fItype\fR? ?\fB\-format\fR \fIformat\fR? \fIwindow command\fR
 Creates a handler for selection requests, such that \fIcommand\fR will
 be executed whenever \fIselection\fR is owned by \fIwindow\fR and
 someone attempts to retrieve it in the form given by \fItype\fR
 (e.g. \fItype\fR is specified in the \fBselection get\fR command).
 \fISelection\fR defaults to PRIMARY, \fItype\fR defaults to STRING, and
 \fIformat\fR defaults to STRING.  If \fIcommand\fR is an empty string
 then any existing handler for \fIwindow\fR, \fItype\fR, and
 \fIselection\fR is removed.
 .RS
 .PP
 When \fIselection\fR is requested, \fIwindow\fR is the selection owner,
 and \fItype\fR is the requested type, \fIcommand\fR will be executed
 as a Tcl command with two additional numbers appended to it
 (with space separators).
 The two additional numbers
 .VS
 are \fIoffset\fR and \fImaxChars\fR:  \fIoffset\fR specifies a starting
 character position in the selection and \fImaxChars\fR gives the maximum
 number of characters to retrieve.  The command should return a value consisting
 of at most \fImaxChars\fR of the selection, starting at position
 \fIoffset\fR.  For very large selections (larger than \fImaxChars\fR)
 the selection will be retrieved using several invocations of \fIcommand\fR
 with increasing \fIoffset\fR values.  If \fIcommand\fR returns a string
 whose length is less than \fImaxChars\fR, the return value is assumed to
 include all of the remainder of the selection;  if the length of
 \fIcommand\fR's result is equal to \fImaxChars\fR then
 \fIcommand\fR will be invoked again, until it eventually
 returns a result shorter than \fImaxChars\fR.  The value of \fImaxChars\fR
 will always be relatively large (thousands of characters).
 .VE
 .PP
 If \fIcommand\fR returns an error then the selection retrieval is rejected
 just as if the selection didn't exist at all.
 .PP
 The \fIformat\fR argument specifies the representation that should be
 used to transmit the selection to the requester (the second column of
 Table 2 of the ICCCM), and defaults to STRING.  If \fIformat\fR is
 STRING, the selection is transmitted as 8-bit ASCII characters (i.e.
 just in the form returned by \fIcommand\fR).  If \fIformat\fR is
 ATOM, then the return value from \fIcommand\fR is divided into fields
 separated by white space;  each field is converted to its atom value,
 and the 32-bit atom value is transmitted instead of the atom name.
 For any other \fIformat\fR, the return value from \fIcommand\fR is
 divided into fields separated by white space and each field is
 converted to a 32-bit integer;  an array of integers is transmitted
 to the selection requester.
 .PP
 The \fIformat\fR argument is needed only for compatibility with
 selection requesters that don't use Tk.  If Tk is being
 used to retrieve the selection then the value is converted back to
 a string at the requesting end, so \fIformat\fR is
 irrelevant.
 .RE
 .TP
 \fBselection own\fR ?\fB\-displayof\fR \fIwindow\fR? ?\fB\-selection\fR \fIselection\fR?
 .TP
 \fBselection own\fR ?\fB\-command\fR \fIcommand\fR? ?\fB\-selection\fR \fIselection\fR? \fIwindow\fR
 The first form of \fBselection own\fR returns the path name of the
 window in this application that owns \fIselection\fR on the display
 containing \fIwindow\fR, or an empty string if no window in this
 application owns the selection.  \fISelection\fR defaults to PRIMARY and
 \fIwindow\fR defaults to ``.''.
 .PP
 The second form of \fBselection own\fR causes \fIwindow\fR to become
 the new owner of \fIselection\fR on \fIwindow\fR's display, returning
 an empty string as result. The existing owner, if any, is notified
 that it has lost the selection.
 If \fIcommand\fR is specified, it is a Tcl script to execute when
 some other window claims ownership of the selection away from
 \fIwindow\fR.  \fISelection\fR defaults to PRIMARY.

 .SH "SEE ALSO"
 clipboard

 .SH KEYWORDS
 clear, format, handler, ICCCM, own, selection, target, type
	'\"
	'\" Copyright (c) 1990-1994 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: selection.n,v 1.4 2001/06/04 03:15:20 hobbs 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
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	.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
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	.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
	..
	'\" # VS - start vertical sidebar
	'\" # ^Y = starting y location
	'\" # ^v = 1 (for troff; for nroff this doesn't matter)
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	.if !"\\$2"" .br
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	.el .nr ^v 1u
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	.ie n 'mc
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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
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	.\}
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	..
	'\" # Special macro to handle page bottom: finish off current
	'\" # box/sidebar if in box/sidebar mode, then invoked standard
	'\" # page bottom macro.
	.de ^B
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	'ti 0
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	.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
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	.if \\n(^v \{\
	.mk ^Y
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	..
	'\" # DS - begin display
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	.RS
	.nf
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	..
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	.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 selection n 8.1 Tk "Tk Built-In Commands"
	.BS
	'\" Note: do not modify the .SH NAME line immediately below!
	.SH NAME
	selection \- Manipulate the X selection
	.SH SYNOPSIS
	\fBselection \fIoption\fR ?\fIarg arg ...\fR?
	.BE

	.SH DESCRIPTION
	.PP
	This command provides a Tcl interface to the X selection mechanism and
	implements the full selection functionality described in the
	X Inter-Client Communication Conventions Manual (ICCCM).
	.PP
	Note that for management of the CLIPBOARD selection (see below), the
	\fBclipboard\fR command may also be used.
	.PP
	The first argument to \fBselection\fR determines the format of the
	rest of the arguments and the behavior of the command. The following
	forms are currently supported:
	.PP
	.TP
	\fBselection clear\fR ?\fB\-displayof\fR \fIwindow\fR? ?\fB\-selection\fR \fIselection\fR?
	If \fIselection\fR exists anywhere on \fIwindow\fR's display, clear it
	so that no window owns the selection anymore. \fISelection\fR
	specifies the X selection that should be cleared, and should be an
	atom name such as PRIMARY or CLIPBOARD; see the Inter-Client
	Communication Conventions Manual for complete details.
	\fISelection\fR defaults to PRIMARY and \fIwindow\fR defaults to ``.''.
	Returns an empty string.
	.TP
	\fBselection get\fR ?\fB\-displayof\fR \fIwindow\fR? ?\fB\-selection\fR \fIselection\fR? ?\fB\-type\fR \fItype\fR?
	Retrieves the value of \fIselection\fR from \fIwindow\fR's display and
	returns it as a result. \fISelection\fR defaults to PRIMARY and
	\fIwindow\fR defaults to ``.''.
	\fIType\fR specifies the form in which the selection is to be returned
	(the desired ``target'' for conversion, in ICCCM terminology), and
	should be an atom name such as STRING or FILE_NAME; see the
	Inter-Client Communication Conventions Manual for complete details.
	\fIType\fR defaults to STRING. The selection owner may choose to
	return the selection in any of several different representation
	formats, such as STRING, ATOM, INTEGER, etc. (this format is different
	than the selection type; see the ICCCM for all the confusing details).
	If the selection is returned in a non-string format, such as INTEGER
	or ATOM, the \fBselection\fR command converts it to string format as a
	collection of fields separated by spaces: atoms are converted to their
	textual names, and anything else is converted to hexadecimal integers.
	.TP
	\fBselection handle\fR ?\fB\-selection\fR \fIselection\fR? ?\fB\-type\fR \fItype\fR? ?\fB\-format\fR \fIformat\fR? \fIwindow command\fR
	Creates a handler for selection requests, such that \fIcommand\fR will
	be executed whenever \fIselection\fR is owned by \fIwindow\fR and
	someone attempts to retrieve it in the form given by \fItype\fR
	(e.g. \fItype\fR is specified in the \fBselection get\fR command).
	\fISelection\fR defaults to PRIMARY, \fItype\fR defaults to STRING, and
	\fIformat\fR defaults to STRING. If \fIcommand\fR is an empty string
	then any existing handler for \fIwindow\fR, \fItype\fR, and
	\fIselection\fR is removed.
	.RS
	.PP
	When \fIselection\fR is requested, \fIwindow\fR is the selection owner,
	and \fItype\fR is the requested type, \fIcommand\fR will be executed
	as a Tcl command with two additional numbers appended to it
	(with space separators).
	The two additional numbers
	.VS
	are \fIoffset\fR and \fImaxChars\fR: \fIoffset\fR specifies a starting
	character position in the selection and \fImaxChars\fR gives the maximum
	number of characters to retrieve. The command should return a value consisting
	of at most \fImaxChars\fR of the selection, starting at position
	\fIoffset\fR. For very large selections (larger than \fImaxChars\fR)
	the selection will be retrieved using several invocations of \fIcommand\fR
	with increasing \fIoffset\fR values. If \fIcommand\fR returns a string
	whose length is less than \fImaxChars\fR, the return value is assumed to
	include all of the remainder of the selection; if the length of
	\fIcommand\fR's result is equal to \fImaxChars\fR then
	\fIcommand\fR will be invoked again, until it eventually
	returns a result shorter than \fImaxChars\fR. The value of \fImaxChars\fR
	will always be relatively large (thousands of characters).
	.VE
	.PP
	If \fIcommand\fR returns an error then the selection retrieval is rejected
	just as if the selection didn't exist at all.
	.PP
	The \fIformat\fR argument specifies the representation that should be
	used to transmit the selection to the requester (the second column of
	Table 2 of the ICCCM), and defaults to STRING. If \fIformat\fR is
	STRING, the selection is transmitted as 8-bit ASCII characters (i.e.
	just in the form returned by \fIcommand\fR). If \fIformat\fR is
	ATOM, then the return value from \fIcommand\fR is divided into fields
	separated by white space; each field is converted to its atom value,
	and the 32-bit atom value is transmitted instead of the atom name.
	For any other \fIformat\fR, the return value from \fIcommand\fR is
	divided into fields separated by white space and each field is
	converted to a 32-bit integer; an array of integers is transmitted
	to the selection requester.
	.PP
	The \fIformat\fR argument is needed only for compatibility with
	selection requesters that don't use Tk. If Tk is being
	used to retrieve the selection then the value is converted back to
	a string at the requesting end, so \fIformat\fR is
	irrelevant.
	.RE
	.TP
	\fBselection own\fR ?\fB\-displayof\fR \fIwindow\fR? ?\fB\-selection\fR \fIselection\fR?
	.TP
	\fBselection own\fR ?\fB\-command\fR \fIcommand\fR? ?\fB\-selection\fR \fIselection\fR? \fIwindow\fR
	The first form of \fBselection own\fR returns the path name of the
	window in this application that owns \fIselection\fR on the display
	containing \fIwindow\fR, or an empty string if no window in this
	application owns the selection. \fISelection\fR defaults to PRIMARY and
	\fIwindow\fR defaults to ``.''.
	.PP
	The second form of \fBselection own\fR causes \fIwindow\fR to become
	the new owner of \fIselection\fR on \fIwindow\fR's display, returning
	an empty string as result. The existing owner, if any, is notified
	that it has lost the selection.
	If \fIcommand\fR is specified, it is a Tcl script to execute when
	some other window claims ownership of the selection away from
	\fIwindow\fR. \fISelection\fR defaults to PRIMARY.

	.SH "SEE ALSO"
	clipboard

	.SH KEYWORDS
	clear, format, handler, ICCCM, own, selection, target, type