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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>
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<p> (<tt>main.cpp</tt>.)
<p>
<pre> #include <<a href="qapplication-h.html">qapplication.h</a>>
#include "chartform.h"
int main( int argc, char *argv[] )
{
<a href="qapplication.html">QApplication</a> app( argc, argv );
<a href="qstring.html">QString</a> filename;
<a name="x2604"></a> if ( app.<a href="qapplication.html#argc">argc</a>() > 1 ) {
<a name="x2605"></a> filename = app.<a href="qapplication.html#argv">argv</a>()[1];
<a name="x2608"></a> if ( !filename.<a href="qstring.html#endsWith">endsWith</a>( ".cht" ) )
filename = <a href="qstring.html#QString-null">QString::null</a>;
}
ChartForm *cf = new ChartForm( filename );
<a name="x2607"></a> app.<a href="qapplication.html#setMainWidget">setMainWidget</a>( cf );
cf-><a href="qwidget.html#show">show</a>();
<a name="x2606"></a> return app.<a href="qapplication.html#exec">exec</a>();
}
</pre>
<p> We have kept the main() function simple and small. We create a
<a href="qapplication.html">QApplication</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">« Data Elements</a> |
<a href="tutorial2.html">Contents</a> |
<a href="tutorial2-05.html">Presenting the GUI »</a>
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