/usr/gnu/man/cat.n/loadTk.n.Z(/usr/gnu/man/cat.n/loadTk.n.Z)

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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 interpreter
       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  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 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)