man/man3/Tk_Init.3 - toolchains/skids - Git at Google

 '\"
 '\" Copyright (c) 1995-1996 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: Tk_Init.3,v 1.4 2000/09/07 17:38:16 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.
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 '\" .BS
 '\"	Start box enclosure.  From here until next .BE, everything will be
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 '\" .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.
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 '\" .VE
 '\"	End of vertical sidebar.
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 '\" .DS
 '\"	Begin an indented unfilled display.
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 '\" .DE
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 '\"
 '\" .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
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 .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 .fi
 ..
 '\"	# BE - end boxed text (draw box now)
 .de BE
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 .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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 ..
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 .ie n 'mc
 .el \{\
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 .sp -1
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 .\"	Draw three-sided box if this is the box's first page,
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 .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
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 .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
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 .de UL
 \\$1\l'|0\(ul'\\$2
 ..
 .TH Tk_Init 3 8.0 Tk "Tk Library Procedures"
 .BS
 .SH NAME
 Tk_Init, Tk_SafeInit \- add Tk to an interpreter and make a new Tk application.
 .SH SYNOPSIS
 .nf
 \fB#include <tk.h>\fR
 .sp
 int
 \fBTk_Init\fR(\fIinterp\fR)
 .sp
 int
 \fBTk_SafeInit\fR(\fIinterp\fR)
 .SH ARGUMENTS
 .AP Tcl_Interp *interp in
 Interpreter in which to load Tk.  Tk should not already be loaded
 in this interpreter.
 .BE

 .SH DESCRIPTION
 .PP
 \fBTk_Init\fR is the package initialization procedure for Tk.
 It is normally invoked by the \fBTcl_AppInit\fR procedure
 for an application or by the \fBload\fR command.
 \fBTk_Init\fR adds all of Tk's commands to \fIinterp\fR
 and creates a new Tk application, including its main window.
 If the initialization is successful \fBTk_Init\fR returns
 \fBTCL_OK\fR;  if there is an error it returns \fBTCL_ERROR\fR.
 \fBTk_Init\fR also leaves a result or error message
 in \fIinterp->result\fR.
 .PP
 If there is a variable \fBargv\fR in \fIinterp\fR, \fBTk_Init\fR
 treats the contents of this variable as a list of options for the
 new Tk application.
 The options may have any of the forms documented for the
 \fBwish\fR application (in fact, \fBwish\fR uses Tk_Init to process
 its command-line arguments).
 .PP
 \fBTk_SafeInit\fR is identical to \fBTk_Init\fR except that it removes
 all Tk commands that are considered unsafe.  Those commands and the
 reasons for their exclusion are:
 .TP
 \fBbell\fR
 Continuous ringing of the bell is a nuisance.
 .TP
 \fBclipboard\fR
 A malicious script could replace the contents of the clipboard with
 the string \fB"rm -r *"\fR and lead to surprises when the contents of
 the clipboard are pasted.
 .TP
 \fBgrab\fR
 Grab can be used to block the user from using any other applications.
 .TP
 \fBmenu\fR
 Menus can be used to cover the entire screen and to steal input from
 the user.
 .TP
 \fBselection\fR
 See clipboard.
 .TP
 \fBsend\fR
 Send can be used to cause unsafe interpreters to execute commands.
 .TP
 \fBtk\fR
 The tk command recreates the send command, which is unsafe.
 .TP
 \fBtkwait\fR
 Tkwait can block the containing process forever
 .TP
 \fBtoplevel\fR
 Toplevels can be used to cover the entire screen and to steal input
 from the user.
 .TP
 \fBwm\fR
 If toplevels are ever allowed, wm can be used to remove decorations,
 move windows around, etc.

 .SH KEYWORDS
 safe, application, initialization, load, main window
	'\"
	'\" Copyright (c) 1995-1996 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: Tk_Init.3,v 1.4 2000/09/07 17:38:16 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
	.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
	.if n .nf
	.if n .ti 0
	.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
	..
	'\" # VS - start vertical sidebar
	'\" # ^Y = starting y location
	'\" # ^v = 1 (for troff; for nroff this doesn't matter)
	.de VS
	.if !"\\$2"" .br
	.mk ^Y
	.ie n 'mc \s12\(br\s0
	.el .nr ^v 1u
	..
	'\" # VE - end of vertical sidebar
	.de VE
	.ie n 'mc
	.el \{\
	.ev 2
	.nf
	.ti 0
	.mk ^t
	\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_Init 3 8.0 Tk "Tk Library Procedures"
	.BS
	.SH NAME
	Tk_Init, Tk_SafeInit \- add Tk to an interpreter and make a new Tk application.
	.SH SYNOPSIS
	.nf
	\fB#include <tk.h>\fR
	.sp
	int
	\fBTk_Init\fR(\fIinterp\fR)
	.sp
	int
	\fBTk_SafeInit\fR(\fIinterp\fR)
	.SH ARGUMENTS
	.AP Tcl_Interp *interp in
	Interpreter in which to load Tk. Tk should not already be loaded
	in this interpreter.
	.BE

	.SH DESCRIPTION
	.PP
	\fBTk_Init\fR is the package initialization procedure for Tk.
	It is normally invoked by the \fBTcl_AppInit\fR procedure
	for an application or by the \fBload\fR command.
	\fBTk_Init\fR adds all of Tk's commands to \fIinterp\fR
	and creates a new Tk application, including its main window.
	If the initialization is successful \fBTk_Init\fR returns
	\fBTCL_OK\fR; if there is an error it returns \fBTCL_ERROR\fR.
	\fBTk_Init\fR also leaves a result or error message
	in \fIinterp->result\fR.
	.PP
	If there is a variable \fBargv\fR in \fIinterp\fR, \fBTk_Init\fR
	treats the contents of this variable as a list of options for the
	new Tk application.
	The options may have any of the forms documented for the
	\fBwish\fR application (in fact, \fBwish\fR uses Tk_Init to process
	its command-line arguments).
	.PP
	\fBTk_SafeInit\fR is identical to \fBTk_Init\fR except that it removes
	all Tk commands that are considered unsafe. Those commands and the
	reasons for their exclusion are:
	.TP
	\fBbell\fR
	Continuous ringing of the bell is a nuisance.
	.TP
	\fBclipboard\fR
	A malicious script could replace the contents of the clipboard with
	the string \fB"rm -r *"\fR and lead to surprises when the contents of
	the clipboard are pasted.
	.TP
	\fBgrab\fR
	Grab can be used to block the user from using any other applications.
	.TP
	\fBmenu\fR
	Menus can be used to cover the entire screen and to steal input from
	the user.
	.TP
	\fBselection\fR
	See clipboard.
	.TP
	\fBsend\fR
	Send can be used to cause unsafe interpreters to execute commands.
	.TP
	\fBtk\fR
	The tk command recreates the send command, which is unsafe.
	.TP
	\fBtkwait\fR
	Tkwait can block the containing process forever
	.TP
	\fBtoplevel\fR
	Toplevels can be used to cover the entire screen and to steal input
	from the user.
	.TP
	\fBwm\fR
	If toplevels are ever allowed, wm can be used to remove decorations,
	move windows around, etc.

	.SH KEYWORDS
	safe, application, initialization, load, main window