loadTk - Load Tk into a safe interpreter.
::safe::loadTk slave ?-use windowId? ?-display displayName?
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
The ::safe::loadTk command initializes the required data structures
in the named safe interpreter and then loads Tk into it.
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 Window 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
See the SECURITY ISSUES section below for implementation details.
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 corresponding
On X11, conflicting -use and -display are likely
to generate a fatal X error.
safe, interp, library, load, package, source, unknown
alias, auto-loading, auto_mkindex, load, master interpreter, safe
interpreter, slave interpreter, source
Copyright © 1995-1996 Sun Microsystems, Inc.
Copyright © 1995-1997 Roger E. Critchlow Jr.
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