summaryrefslogtreecommitdiffstats
path: root/doc/html/tutorial2-04.html
blob: e7c678c3e3e9bf3a3f06702279beab1158ffe4f3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/doc/tutorial2.doc:322 -->
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Mainly Easy</title>
<style type="text/css"><!--
fn { margin-left: 1cm; text-indent: -1cm; }
a:link { color: #004faf; text-decoration: none }
a:visited { color: #672967; text-decoration: none }
body { background: #ffffff; color: black; }
--></style>
</head>
<body>

<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr bgcolor="#E5E5E5">
<td valign=center>
 <a href="index.html">
<font color="#004faf">Home</font></a>
 | <a href="classes.html">
<font color="#004faf">All&nbsp;Classes</font></a>
 | <a href="mainclasses.html">
<font color="#004faf">Main&nbsp;Classes</font></a>
 | <a href="annotated.html">
<font color="#004faf">Annotated</font></a>
 | <a href="groups.html">
<font color="#004faf">Grouped&nbsp;Classes</font></a>
 | <a href="functions.html">
<font color="#004faf">Functions</font></a>
</td>
<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="ntqstring.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="ntqstring.html#endsWith">endsWith</a>( ".cht" ) )
                filename = <a href="ntqstring.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>();
    }
</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>
</p>
<p> 
<!-- eof -->
<p><address><hr><div align=center>
<table width=100% cellspacing=0 border=0><tr>
<td>Copyright &copy; 2007
<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
<td align=right><div align=right>TQt 3.3.8</div>
</table></div></address></body>
</html>