Safe Tk(n) Tk Built-In Commands Safe Tk(n)______________________________________________________________________________NAMEloadTk - Load Tk into a safe interpreter.
SYNOPSIS
::safe::loadTk slave ?-use windowId? ?-display displayName?
_________________________________________________________________DESCRIPTION
Safe Tk is based on Safe Tcl, which provides a mechanism that allows
restricted and mediated access to auto-loading and packages for safe
interpreters. Safe Tk adds the ability to configure the interpreter
for safe Tk operations and load Tk into safe interpreters.
The ::safe::loadTk command initializes the required data structures in
the named safe interpreter and then loads Tk into it. The interpreter
must have been created with ::safe::interpCreate or have been initial‐
ized with ::safe::interpInit. The command returns the name of the safe
interpreter. If -use is specified, the window identified by the speci‐
fied system dependent identifier windowId is used to contain the “.”
window of the safe interpreter; it can be any valid id, eventually ref‐
erencing a window belonging to another application. As a convenience,
if the window you plan to use is a Tk Window of the application you can
use the window name (e.g. .x.y) instead of its window Id ([winfo id
.x.y]). When -use is not specified, a new toplevel window is created
for the “.” window of the safe interpreter. On X11 if you want the
embedded window to use another display than the default one, specify it
with -display. See the SECURITY ISSUES section below for implementa‐
tion details.
SECURITY ISSUES
Please read the safe manual page for Tcl to learn about the basic secu‐
rity considerations for Safe Tcl.
::safe::loadTk adds the value of tk_library taken from the master
interpreter to the virtual access path of the safe interpreter so that
auto-loading will work in the safe interpreter.
Tk initialization is now safe with respect to not trusting the slave's
state for startup. ::safe::loadTk registers the slave's name so when
the Tk initialization (Tk_SafeInit) is called and in turn calls the
master's ::safe::InitTk it will return the desired argv equivalent
(-use windowId, correct -display, etc.)
When -use is not used, the new toplevel created is specially decorated
so the user is always aware that the user interface presented comes
from a potentially unsafe code and can easily delete the corresponding
interpreter.
On X11, conflicting -use and -display are likely to generate a fatal X
error.
SEE ALSOsafe(n), interp(n), library(n), load(n), package(n), source(n),
unknown(n)KEYWORDS
alias, auto-loading, auto_mkindex, load, master interpreter, safe
interpreter, slave interpreter, source
Tk 8.0 Safe Tk(n)