66 lines
3.5 KiB
HTML
66 lines
3.5 KiB
HTML
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<HTML><HEAD><TITLE>Tk Tk Built-In Commands - Safe manual page</TITLE></HEAD><BODY>
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<H3><A NAME="M2">NAME</A></H3>
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loadTk - Load Tk into a safe interpreter.
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<H3><A NAME="M3">SYNOPSIS</A></H3>
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<B>::safe::loadTk </B><I>slave</I> ?<B>-use</B> <I>windowId</I>? ?<B>-display</B> <I>displayName</I>? <BR>
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Safe Tk is based on Safe Tcl, which provides a mechanism
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that allows restricted and mediated
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access to auto-loading and packages for safe interpreters.
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Safe Tk adds the ability to configure the interpreter
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for safe Tk operations and load Tk into safe
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interpreters.
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<H3><A NAME="M4">DESCRIPTION</A></H3>
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The <B>::safe::loadTk</B> command initializes the required data structures
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in the named safe interpreter and then loads Tk into it.
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The command returns the name of the safe interpreter.
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If <B>-use</B> is specified, the window identified by the specified system
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dependent identifier <I>windowId</I> is used to contain the ``.''
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window of the safe interpreter; it can be any valid id, eventually
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referencing a window belonging to another application. As a convenience,
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if the window you plan to use is a Tk Window of the application you
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can use the window name (eg: <B>.x.y</B>) instead of its window Id
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(<B>[winfo id .x.y]</B>).
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When <B>-use</B> is not specified,
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a new toplevel window is created for the ``.'' window of
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the safe interpreter. On X11 if you want the embedded window
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to use another display than the default one, specify it with
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<B>-display</B>.
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See the <B>SECURITY ISSUES</B> section below for implementation details.
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<H3><A NAME="M5">SECURITY ISSUES</A></H3>
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Please read the <B>safe</B> manual page for Tcl to learn about the basic
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security considerations for Safe Tcl.
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<P>
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<B>::safe::loadTk</B> adds the value of <B>tk_library</B> taken from the master
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interpreter to the virtual access path of the safe interpreter so that
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auto-loading will work in the safe interpreter.
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<P>
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<P>
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Tk initialization is now safe with respect to not trusting
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the slave's state for startup. <B>::safe::loadTk</B>
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registers the slave's name so
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when the Tk initialization (<B><A HREF="../TclLib/Tk_Init.htm">Tk_SafeInit</A></B>) is called
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and in turn calls the master's <B>::safe::InitTk</B> it will
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return the desired <B>argv</B> equivalent (<B>-use</B>
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<I>windowId</I>, correct <B>-display</B>, etc...).
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<P>
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When <B>-use</B> is not used, the new toplevel created is specially
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decorated so the user is always aware that the user interface presented comes
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from a potentially unsafe code and can easily delete the corresponding
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interpreter.
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<P>
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On X11, conflicting <B>-use</B> and <B>-display</B> are likely
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to generate a fatal X error.
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<H3><A NAME="M6">SEE ALSO</A></H3>
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<B>safe</B>, <B><A HREF="../TkCmd/interp.htm">interp</A></B>, <B>library</B>, <B><A HREF="../TkCmd/load.htm">load</A></B>, <B><A HREF="../TkCmd/package.htm">package</A></B>, <B><A HREF="../TkCmd/source.htm">source</A></B>, <B><A HREF="../TkCmd/unknown.htm">unknown</A></B>
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<H3><A NAME="M7">KEYWORDS</A></H3>
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<A href="../Keywords/A.htm#alias">alias</A>, <A href="../Keywords/A.htm#auto-loading">auto-loading</A>, <A href="../Keywords/A.htm#auto_mkindex">auto_mkindex</A>, <A href="../Keywords/L.htm#load">load</A>, <A href="../Keywords/M.htm#master interpreter">master interpreter</A>, <A href="../Keywords/S.htm#safe
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interpreter">safe
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interpreter</A>, <A href="../Keywords/S.htm#slave interpreter">slave interpreter</A>, <A href="../Keywords/S.htm#source">source</A>
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<HR><PRE>
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<A HREF="../copyright.htm">Copyright</A> © 1995-1996 Sun Microsystems, Inc.
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<A HREF="../copyright.htm">Copyright</A> © 1995-1997 Roger E. Critchlow Jr.</PRE>
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</BODY></HTML>
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