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+/****************************************************************************
+**
+** Copyright (C) 1992-2008 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 <qapplication.h>
+#include <qtable.h>
+
+// Table size
+
+const int numRows = 1000000;
+const int numCols = 1000000;
+
+class MyTable : public QTable
+{
+public:
+ MyTable( int r, int c ) : QTable( r, c ) {
+ items.setAutoDelete( TRUE );
+ widgets.setAutoDelete( TRUE );
+ setCaption( tr( "A 1 Million x 1 Million Cell Table" ) );
+ setLeftMargin( fontMetrics().width( "W999999W" ) );
+ }
+
+ void resizeData( int ) {}
+ QTableItem *item( int r, int c ) const { return items.find( indexOf( r, c ) ); }
+ void setItem( int r, int c, QTableItem *i ) { items.replace( indexOf( r, c ), i ); }
+ void clearCell( int r, int c ) { items.remove( indexOf( r, c ) ); }
+ void takeItem( QTableItem *item )
+ {
+ items.setAutoDelete( FALSE );
+ items.remove( indexOf( item->row(), item->col() ) );
+ items.setAutoDelete( TRUE );
+ }
+ void insertWidget( int r, int c, QWidget *w ) { widgets.replace( indexOf( r, c ), w ); }
+ QWidget *cellWidget( int r, int c ) const { return widgets.find( indexOf( r, c ) ); }
+ void clearCellWidget( int r, int c )
+ {
+ QWidget *w = widgets.take( indexOf( r, c ) );
+ if ( w )
+ w->deleteLater();
+ }
+
+private:
+ QIntDict<QTableItem> items;
+ QIntDict<QWidget> widgets;
+
+};
+
+// The program starts here.
+
+int main( int argc, char **argv )
+{
+ QApplication app( argc, argv );
+
+ MyTable table( numRows, numCols );
+ app.setMainWidget( &table );
+ table.show();
+ return app.exec();
+}