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<title>Sizable dialogs at its easiest.</title>
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Sizable dialogs at its easiest
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This article was contributed by <a href="mailto:hb@condat.de">Hans Buehler</A>.
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<p>
<h4>Introduction:</h4>
<b><font SIZE="+1">
<p align="center"></font><font size="3">Q:</b> What is the difference between the
following two dialogs ?</font></p>
<p align="center"> <img SRC="resizing_dlg_small.gif" alt="small dialog"
align="texttop" width="287" height="180"><img SRC="resizing_dlg_big.gif" alt="big dialog"
align="texttop" width="377" height="245"> </p>
<p align="center"><font size="3"><strong>A:</strong> There is <i>no</i> difference !</font><big>
</big></p>
<p>The <tt>cdxCSizingDialog</tt> class is a class derived from <tt>CDialog</tt> making it <i>very</i>
easy to implement sizable dialogs. I really missed that feature in VC++ (and IMHO it's a
shame to the MFC that it doesn't provide an easy to use way to solve this problem). <br>
However, now it is possible to make your dialogs sizable - you can add this to an existing
dialog <a HREF="#HowTo">in three steps</a> ! </p>
<p>In addition to <tt>cdxCSizingDialog</tt>, you will even find both <b><tt>cdxCSizingPropSheet</tt></b>
and <b><tt>cdxCSizingPropPage</tt></b> in the two files that are part of the zip, but these are
considered to be in <i>beta</i> stadium for now (they seem to work ... I only have problems with
the sizing icon). </p>
<p>The most important features of <tt>cdxCSizingDialog </tt>are:
<ul>
<li>Easy to add even to already existing dialog classes.</li>
<li>Several ways controls may react on window size changes, from a simple <i>nothing</i> to
a percentage-value;</li>
<li>Automatic creation of a standard-windows sizing icon (as used by the explorer's windows)
in the lower right corner of your dialog.</li>
<li>Support to load/store window position to the registry.</li>
</ul>
<h4><a NAME="Requirements"></a>Requirements:</h4>
<ul>
<li>Tested and used with Visual C++ 5.0.</li>
</ul>
<h4><a NAME="Files"></a>Files:</h4>
<ul>
<li>cdxCSizingDialog.h (header; can be found in the archive)</li>
<li>cdxCSizingDialog.cpp (implementation; can be found in the archive)</li>
<li><a HREF="resizing_dlg_sample.zip">Sample application</a> (includes a documentation; see
sub-directory "doc" in the archive)</li>
</ul>
<h4><a NAME="HowTo"></a>How to use:</h4>
<ul>
<i><u><p>Make your dialog sizable in 3 steps !!</u></i></p>
</ul>
<ol>
<li>Every control on our dialog needs a DDX value of class <i>control </i>(use Class Wizard
in the resource editor).</li>
<li>In both the header and implementation file, replace all strings "<tt>CDialog</tt>"
by "<tt>cdxCSizingDialog</tt>" and insert an <tt>#include
"cdxCSizingDialog.h"</tt> to your header file.</li>
<li>In <tt>OnInitDialog()</tt>, make a call to <tt>AddSzControl()</tt> for each control you
want to resize/reposition if the dialog's size changes.</li>
<li>Additional features might be used... see the documentation.</li>
</ol>
<ol>
<a HREF="#Tutorial"><p></a>A simple tutorial is included in the documentation that might
be found <a href="resizing_dlg_doc.zip">here</a></p>
</ol>
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