doc/html/tutorial2-04.html


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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Mainly Easy</h1>


<p> 
<p> (<tt>main.cpp</tt>.)
<p> 

<pre>    #include &lt;<a href="qapplication-h.html">ntqapplication.h</a>&gt;
    #include "chartform.h"

    int main( int argc, char *argv[] )
    {
        <a href="ntqapplication.html">TQApplication</a> app( argc, argv );

        <a href="tqstring.html">TQString</a> filename;
    <a name="x2557"></a>    if ( app.<a href="ntqapplication.html#argc">argc</a>() &gt; 1 ) {
    <a name="x2558"></a>        filename = app.<a href="ntqapplication.html#argv">argv</a>()[1];
    <a name="x2561"></a>        if ( !filename.<a href="tqstring.html#endsWith">endsWith</a>( ".cht" ) )
                filename = <a href="tqstring.html#TQString-null">TQString::null</a>;
        }

        ChartForm *cf = new ChartForm( filename );
    <a name="x2560"></a>    app.<a href="ntqapplication.html#setMainWidget">setMainWidget</a>( cf );
        cf-&gt;<a href="tqwidget.html#show">show</a>();

        return app.<a href="ntqapplication.html#exec">exec</a>();
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</pre>
<p> We have kept the main() function simple and small. We create a
<a href="ntqapplication.html">TQApplication</a> object and pass it the command line arguments. We are
allowing users to invoke the program with <tt>chart mychart.cht</tt>, so if
they've added a filename we pass that through to the chart form
constructor. Most of the action takes place within the chart form
which we'll review next.
<p> <p align="right">
<a href="tutorial2-03.html">&laquo; Data Elements</a> |
<a href="tutorial2.html">Contents</a> |
<a href="tutorial2-05.html">Presenting the GUI &raquo;</a>
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<td align=right><div align=right>TQt 3.3.8</div>
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