source: trunk/doc/html/table-bigtable-main-cpp.html

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2<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/table/qtable.cpp:1656 -->
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6<title>table/bigtable/main.cpp Example File</title>
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32<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>table/bigtable/main.cpp Example File</h1>
33
34
35<pre>/****************************************************************************
36** $Id: table-bigtable-main-cpp.html 2051 2007-02-21 10:04:20Z chehrlic $
37**
38** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
39**
40** This file is part of an example program for Qt. This example
41** program may be used, distributed and modified without limitation.
42**
43*****************************************************************************/
44
45#include &lt;<a href="qapplication-h.html">qapplication.h</a>&gt;
46#include &lt;<a href="qtable-h.html">qtable.h</a>&gt;
47
48// Table size
49
50const int numRows = 1000000;
51const int numCols = 1000000;
52
53class MyTable : public <a href="qtable.html">QTable</a>
54{
55public:
56 MyTable( int r, int c ) : <a href="qtable.html">QTable</a>( r, c ) {
57<a name="x1291"></a> items.<a href="qptrcollection.html#setAutoDelete">setAutoDelete</a>( TRUE );
58 widgets.<a href="qptrcollection.html#setAutoDelete">setAutoDelete</a>( TRUE );
59 setCaption( tr( "A 1 Million x 1 Million Cell Table" ) );
60 setLeftMargin( fontMetrics().width( "W999999W" ) );
61 }
62
63 void resizeData( int ) {}
64<a name="x1286"></a> <a href="qtableitem.html">QTableItem</a> *item( int r, int c ) const { return items.<a href="qintdict.html#find">find</a>( indexOf( r, c ) ); }
65<a name="x1288"></a> void setItem( int r, int c, QTableItem *i ) { items.<a href="qintdict.html#replace">replace</a>( indexOf( r, c ), i ); }
66<a name="x1287"></a> void clearCell( int r, int c ) { items.<a href="qintdict.html#remove">remove</a>( indexOf( r, c ) ); }
67 void takeItem( <a href="qtableitem.html">QTableItem</a> *item )
68 {
69 items.<a href="qptrcollection.html#setAutoDelete">setAutoDelete</a>( FALSE );
70<a name="x1294"></a><a name="x1293"></a> items.<a href="qintdict.html#remove">remove</a>( indexOf( item-&gt;<a href="qtableitem.html#row">row</a>(), item-&gt;<a href="qtableitem.html#col">col</a>() ) );
71 items.<a href="qptrcollection.html#setAutoDelete">setAutoDelete</a>( TRUE );
72 }
73 void insertWidget( int r, int c, QWidget *w ) { widgets.<a href="qintdict.html#replace">replace</a>( indexOf( r, c ), w ); }
74 <a href="qwidget.html">QWidget</a> *cellWidget( int r, int c ) const { return widgets.<a href="qintdict.html#find">find</a>( indexOf( r, c ) ); }
75 void clearCellWidget( int r, int c )
76 {
77<a name="x1289"></a> <a href="qwidget.html">QWidget</a> *w = widgets.<a href="qintdict.html#take">take</a>( indexOf( r, c ) );
78 if ( w )
79<a name="x1290"></a> w-&gt;<a href="qobject.html#deleteLater">deleteLater</a>();
80 }
81
82private:
83 <a href="qintdict.html">QIntDict</a>&lt;QTableItem&gt; items;
84 <a href="qintdict.html">QIntDict</a>&lt;QWidget&gt; widgets;
85
86};
87
88// The program starts here.
89
90int main( int argc, char **argv )
91{
92 <a href="qapplication.html">QApplication</a> app( argc, argv );
93
94 MyTable table( numRows, numCols );
95 app.<a href="qapplication.html#setMainWidget">setMainWidget</a>( &amp;table );
96<a name="x1292"></a> table.<a href="qwidget.html#show">show</a>();
97 return app.<a href="qapplication.html#exec">exec</a>();
98}
99</pre><!-- eof -->
100<p><address><hr><div align=center>
101<table width=100% cellspacing=0 border=0><tr>
102<td>Copyright &copy; 2007
103<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
104<td align=right><div align=right>Qt 3.3.8</div>
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106</html>
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