Fejl i menu med ikoner

Hej...

denne kode gider ikke virke af en eller anden grund?

jeg har taget den fra microsoft, og kopieret den fra VB til C#

som jeg ser det, bliver OnMeasureItem ikke kaldt...

ms kode:
http://support.microsoft.com/?kbid=888168

public class IconMenuItem:System.Windows.Forms.MenuItem
{
    private Icon icon;
    private Font font;

    public IconMenuItem(string menuText,EventHandler handler,Shortcut shortcut,Icon ico):base(menuText,handler,shortcut)
    {
        this.icon = icon;
        this.font = SystemInformation.MenuFont;
        this.OwnerDraw = true;
    }

    protected override void OnMeasureItem(MeasureItemEventArgs e)
    {
        base.OnMeasureItem(e);
        StringFormat sFormat = new StringFormat();

        sFormat.HotkeyPrefix = HotkeyPrefix.Show;
        sFormat.SetTabStops(50,new Single[] {0});

        if (this.icon.Height > this.font.Height)
            e.ItemHeight = this.icon.Height+6;
        else
            e.ItemHeight = this.font.Height+6;

        e.ItemWidth = (int)e.Graphics.MeasureString(AppendShortcut(),this.font,1000,sFormat).Width+this.icon.Width+5;

        sFormat.Dispose();
        sFormat = null;
    }

    protected override void OnDrawItem(DrawItemEventArgs e)
    {
        Brush br;
        StringFormat sFormat;
       
        base.OnDrawItem(e);

        e.Graphics.FillRectangle(SystemBrushes.Control, e.Bounds);
        if (this.icon != null)
            e.Graphics.DrawIcon(this.icon, e.Bounds.Left + 3, e.Bounds.Top + 3);

        sFormat = new StringFormat();
        sFormat.HotkeyPrefix = HotkeyPrefix.Show;
        sFormat.SetTabStops(50, new Single[] {0});
        br = new SolidBrush(SystemColors.WindowText);
       
        e.Graphics.DrawString(AppendShortcut(), this.font, br, e.Bounds.Left+this.icon.Width+10, e.Bounds.Top+ 2, sFormat);
       
        br.Dispose();
        br = null;
        sFormat.Dispose();
        sFormat = null;
    }

    private string AppendShortcut()
    {
        string s;
        s = this.Text;

        if (this.ShowShortcut && this.Shortcut != Shortcut.None)
        {
            Keys k = (Keys)Shortcut;
           
            //GetType(k) should be GetType(Keys)
            s += Convert.ToChar(9)+TypeDescriptor.GetConverter(k.GetType()).ConvertToString(k);
        }

        return s;
    }
}