NAME

       safe::loadTk - Load Tk into a safe interpreter.

SYNOPSIS

       safe::loadTk child ?-use windowId? ?-display displayName?
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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 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 Window of the
       application  you  can  use  the window name (e.g., “.x.y”) instead of its window Id (e.g.,
       from 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 parent 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 child's state for  startup.
       safe::loadTk  registers  the  child's  name so when the Tk initialization (Tk_SafeInit) is
       called and in turn calls the  parent'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(3tcl),   interp(3tcl),   library(3tcl),   load(3tcl),   package(3tcl),  source(3tcl),
       unknown(3tcl)

KEYWORDS

       alias, auto-loading, auto_mkindex,  load,  parent  interpreter,  safe  interpreter,  child
       interpreter, source