raw/mann/loadTk.n

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   7 '\" RCS: @(#) $Id: loadTk.n,v 1.1 2003/12/20 03:31:54 bbbush Exp $
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   9 '\" The definitions below are for supplemental macros used in Tcl/Tk
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 245 .TH "Safe Tk" n 8.0 Tk "Tk Built-In Commands"
 246 .BS
 247 '\" Note:  do not modify the .SH NAME line immediately below!
 248 .SH NAME
 249 loadTk \- Load Tk into a safe interpreter.
 250 .SH SYNOPSIS
 251 \fB::safe::loadTk \fIslave\fR ?\fB\-use\fR \fIwindowId\fR? ?\fB\-display\fR \fIdisplayName\fR?
 252 .BE
 253
 254 Safe Tk is based on Safe Tcl, which provides a mechanism
 255 that allows restricted and mediated
 256 access to auto-loading and packages for safe interpreters.
 257 Safe Tk adds the ability to configure the interpreter
 258 for safe Tk operations and load Tk into safe
 259 interpreters.
 260
 261 .SH DESCRIPTION
 262 .PP
 263 The \fB::safe::loadTk\fR command initializes the required data structures
 264 in the named safe interpreter and then loads Tk into it.
 265 The command returns the name of the safe interpreter.
 266 If \fB\-use\fR is specified, the window identified by the specified system
 267 dependent identifier \fIwindowId\fR is used to contain the ``.''
 268 window of the safe interpreter; it can be any valid id, eventually
 269 referencing a window belonging to another application. As a convenience,
 270 if the window you plan to use is a Tk Window of the application you
 271 can use the window name (eg: \fB.x.y\fR) instead of its window Id
 272 (\fB[winfo id .x.y]\fR).
 273 When \fB\-use\fR is not specified,
 274 a new toplevel window is created for the ``.'' window of
 275 the safe interpreter. On X11 if you want the embedded window
 276 to use another display than the default one, specify it with
 277 \fB\-display\fR.
 278 See the \fBSECURITY ISSUES\fR section below for implementation details.
 279
 280 .SH "SECURITY ISSUES"
 281 .PP
 282 Please read the \fBsafe\fR manual page for Tcl to learn about the basic
 283 security considerations for Safe Tcl.
 284 .PP
 285 \fB::safe::loadTk\fR adds the value of \fBtk_library\fR taken from the master
 286 interpreter to the virtual access path of the safe interpreter so that
 287 auto-loading will work in the safe interpreter.
 288 .PP
 289 .PP
 290 Tk initialization is now safe with respect to not trusting
 291 the slave's state for startup. \fB::safe::loadTk\fR
 292 registers the slave's name so
 293 when the Tk initialization (\fBTk_SafeInit\fR) is called
 294 and in turn calls the master's \fB::safe::InitTk\fR it will
 295 return the desired \fBargv\fR equivalent (\fB\-use\fR
 296 \fIwindowId\fR, correct \fB\-display\fR, etc...).
 297 .PP
 298 When \fB\-use\fR is not used, the new toplevel created is specially
 299 decorated so the user is always aware that the user interface presented comes
 300 from a potentially unsafe code and can easily delete the corresponding
 301 interpreter.
 302 .PP
 303 On X11, conflicting \fB\-use\fR and \fB\-display\fR are likely
 304 to generate a fatal X error.
 305
 306 .SH "SEE ALSO"
 307 safe(n), interp(n), library(n), load(n), package(n), source(n), unknown(n)
 308
 309 .SH KEYWORDS
 310 alias, auto\-loading, auto_mkindex, load, master interpreter, safe
 311 interpreter, slave interpreter, source