#include <QApplication>
#include <QPainter>
#include <QPixmap>
#include <QDebug>

int main( int argc, char *argv[] )
{
        QApplication app( argc, argv );

        QPixmap pix( 100, 100 );
        QPainter p( &pix );
        p.fillRect( QRect( 0, 0, pix.size().width(), pix.size().height() ), QBrush( Qt::white ) );
        p.setPen( QPen( Qt::red ) );
        p.drawRect( 10, 10, 80, 80 );
        pix.save( "test.png" );

        return 0;
}