CPoint topleft(10,10);
    CPoint botright(100,100);

    CRect NorRect( topleft, botright );
    CRect NotNorRect( botright, topleft );

    //NorRect.InflateRect( 5, 5 );
    //NotNorRect.InflateRect( 5, 5 );

    pDC->Rectangle( NorRect );
    Sleep( 1000 );
    pDC->Rectangle( NotNorRect );