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<HTML>
<HEAD>
<TITLE>Tk::ObjScanner - Tk composite widget object scanner</TITLE>
<LINK REL="stylesheet" HREF="../../../Active.css" TYPE="text/css">
<LINK REV="made" HREF="mailto:">
</HEAD>
<BODY>
<TABLE BORDER=0 CELLPADDING=0 CELLSPACING=0 WIDTH=100%>
<TR><TD CLASS=block VALIGN=MIDDLE WIDTH=100% BGCOLOR="#cccccc">
<STRONG><P CLASS=block> Tk::ObjScanner - Tk composite widget object scanner</P></STRONG>
</TD></TR>
</TABLE>
<A NAME="__index__"></A>
<!-- INDEX BEGIN -->
<UL>
<LI><A HREF="#name">NAME</A></LI><LI><A HREF="#supportedplatforms">SUPPORTED PLATFORMS</A></LI>
<LI><A HREF="#synopsis">SYNOPSIS</A></LI>
<LI><A HREF="#description">DESCRIPTION</A></LI>
<LI><A HREF="#constructor parameters">Constructor parameters</A></LI>
<LI><A HREF="#widgetspecific methods">WIDGET-SPECIFIC METHODS</A></LI>
<UL>
<LI><A HREF="#updatelistbox">updateListBox</A></LI>
</UL>
<LI><A HREF="#caveats">CAVEATS</A></LI>
<LI><A HREF="#author">AUTHOR</A></LI>
<LI><A HREF="#see also">SEE ALSO</A></LI>
</UL>
<!-- INDEX END -->
<HR>
<P>
<H1><A NAME="name">NAME</A></H1>
<P>Tk::ObjScanner - Tk composite widget object scanner</P>
<P>
<HR>
<H1><A NAME="supportedplatforms">SUPPORTED PLATFORMS</A></H1>
<UL>
<LI>Linux</LI>
<LI>Solaris</LI>
<LI>Windows</LI>
</UL>
<HR>
<H1><A NAME="synopsis">SYNOPSIS</A></H1>
<PRE>
use Tk::ObjScanner;
</PRE>
<PRE>
my $scanner = $mw->ObjScanner( caller => $object,
[title=>"windows"]) -> pack ;</PRE>
<P>
<HR>
<H1><A NAME="description">DESCRIPTION</A></H1>
<P>The scanner provide a GUI to scan the attributes of an object. It can
also be used to scan the elements of a hash or an array.</P>
<P>The scanner is a composite widget made of a <A HREF="../../../site/lib/Tk/HList.html">the Tk::HList manpage</A> and a text
window (actually a <A HREF="../../../TK/ROText.html">the TK::ROText manpage</A>). This widget acts as a scanner to
the object (or hash ref) passed with the 'caller' parameter. The
scanner will retrieve all keys of the hash/object and insert them in
the HList.</P>
<P>When the user double clicks on a key, the corresponding value will be added
in the HList.</P>
<P>If the value is a scalar, the scalar will be displayed in the text window.
(Which is handy if the value is a multi-line string)</P>
<P>
<HR>
<H1><A NAME="constructor parameters">Constructor parameters</A></H1>
<UL>
<LI>
caller: The ref of the object or hash or array to scan (mandatory).
<P></P>
<LI>
title: the title of the menu created by the scanner (optionnal)
<P></P>
<LI>
destroyable: If set, a menu entry will allow the user to deatroy the scanner
widget. (optional, default 1) . You may want to set this parameter to 0 if
the destroy can be managed by a higher level object.
<P></P></UL>
<P>
<HR>
<H1><A NAME="widgetspecific methods">WIDGET-SPECIFIC METHODS</A></H1>
<P>
<H2><A NAME="updatelistbox">updateListBox</A></H2>
<P>Update the keys of the listbox. This method may be handy if the
scanned object wants to update the listbox of the scanner
when the scanned object gets new attributes.</P>
<P>
<HR>
<H1><A NAME="caveats">CAVEATS</A></H1>
<P>ObjScanner may fail if an object involves a lot of internal perl
magic. In this case, I'd be glad to hear about and I'll try to fix
the problem.</P>
<P>ObjScanner does not detect recursive data structures. It will just
keep on displaying the tree until the user gets tired of clicking on
the HList items.</P>
<P>
<HR>
<H1><A NAME="author">AUTHOR</A></H1>
<P>Dominique Dumont, <A HREF="mailto:Dominique_Dumont@grenoble.hp.com">Dominique_Dumont@grenoble.hp.com</A></P>
<P>Copyright (c) 1997-1999 Dominique Dumont. All rights reserved.
This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.</P>
<P>
<HR>
<H1><A NAME="see also">SEE ALSO</A></H1>
<P>perl(1), Tk(3), Tk::HList(3)</P>
<TABLE BORDER=0 CELLPADDING=0 CELLSPACING=0 WIDTH=100%>
<TR><TD CLASS=block VALIGN=MIDDLE WIDTH=100% BGCOLOR="#cccccc">
<STRONG><P CLASS=block> Tk::ObjScanner - Tk composite widget object scanner</P></STRONG>
</TD></TR>
</TABLE>
</BODY>
</HTML>