qt3-doc 3:3.3.8-b-8ubuntu3 / usr / share / qt3 / doc / html / table-bigtable-main-cpp.html

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<title>table/bigtable/main.cpp Example File</title>
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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>table/bigtable/main.cpp Example File</h1>

 
<pre>/****************************************************************************
** $Id: qt/main.cpp   3.3.8   edited Jan 11 14:37 $
**
** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
**
** This file is part of an example program for Qt.  This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/

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

// Table size

const int numRows = 1000000;
const int numCols = 1000000;

class MyTable : public <a href="qtable.html">QTable</a>
{
public:
    MyTable( int r, int c ) : <a href="qtable.html">QTable</a>( r, c ) {
<a name="x1291"></a>        items.<a href="qptrcollection.html#setAutoDelete">setAutoDelete</a>( TRUE );
        widgets.<a href="qptrcollection.html#setAutoDelete">setAutoDelete</a>( TRUE );
        setCaption( tr( "A 1 Million x 1 Million Cell Table" ) );
        setLeftMargin( fontMetrics().width( "W999999W" ) );
    }

    void resizeData( int ) {}
<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 ) ); }
<a name="x1288"></a>    void setItem( int r, int c, QTableItem *i ) { items.<a href="qintdict.html#replace">replace</a>( indexOf( r, c ), i ); }
<a name="x1287"></a>    void clearCell( int r, int c ) { items.<a href="qintdict.html#remove">remove</a>( indexOf( r, c ) ); }
    void takeItem( <a href="qtableitem.html">QTableItem</a> *item )
    {
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<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>() ) );
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private:
    <a href="qintdict.html">QIntDict</a>&lt;QTableItem&gt; items;
    <a href="qintdict.html">QIntDict</a>&lt;QWidget&gt; widgets;

};

// The program starts here.

int main( int argc, char **argv )
{
    <a href="qapplication.html">QApplication</a> app( argc, argv );

    MyTable table( numRows, numCols );
    app.<a href="qapplication.html#setMainWidget">setMainWidget</a>( &amp;table );
<a name="x1292"></a>    table.<a href="qwidget.html#show">show</a>();
    return app.<a href="qapplication.html#exec">exec</a>();
}
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