Safe Tk(n) Tk Built-In Commands Safe Tk(n)
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NAME
loadTk - Load Tk into a safe interpreter.
SYNOPSIS
::safe::loadTk slave ?-use windowId? ?-display displayName?
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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 inter-preter interpreter
preter for safe Tk operations and load Tk into safe interpreters.
DESCRIPTION
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
initialized with ::safe::interpInit. The command returns the name of the safe interpreter. If -use
is specified, the window identified by the specified system dependent identifier windowId is used to
contain the ``.'' window of the safe interpreter; it can be any valid id, eventually referencing a
window belonging to another application. As a convenience, if the window you plan to use is a Tk Win-dow Window
dow of the application you can use the window name (eg: .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 implementation details.
SECURITY ISSUES
Please read the safe manual page for Tcl to learn about the basic security 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 cor-responding corresponding
responding interpreter.
On X11, conflicting -use and -display are likely to generate a fatal X error.
SEE ALSO
safe(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)
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