Annotation Menu (Right click)

If user right click and it brings up annotation menu, how can I track which menu item user selected?

I've debug code display list (see below) and detail of each menu item in the OnAnnMenu() but I didn't see anything that would give me a clue which menu item user selected - i.e. I've seleted "Undo":

[0] text=&Undo, ID=115, enable=True, checked=False
[1] text=Cu&t, ID=100, enable=True, checked=False
[2] text=&Copy, ID=101, enable=True, checked=False
[3] text=&Paste, ID=102, enable=True, checked=False
[4] text=&Delete, ID=103, enable=True, checked=False
[5] text=, ID=-1, enable=False, checked=False
[6] text=Select &All, ID=114, enable=True, checked=False
[7] text=, ID=-1, enable=False, checked=False
[8] text=Bring to &Front, ID=104, enable=True, checked=False
[9] text=Send to &Back, ID=105, enable=True, checked=False
[10] text=, ID=-1, enable=False, checked=False
[11] text=&Lock All..., ID=118, enable=True, checked=False
[12] text=&Unlock All..., ID=119, enable=True, checked=False
[13] text=, ID=-1, enable=False, checked=False
[14] text=Default Pr&operties, ID=0, enable=True, checked=False

private void OnAnnMenu(int hMenu)
{
    LTANNLib.LEADRasterAnnMenu annMenu = new LTANNLib.LEADRasterAnnMenu();
    annMenu.SetAnnMenu(hMenu);
    Console.WriteLine("OnAnnMenu(): hMenu=" + hMenu);

    annMenu.EnableMethodErrors = false;

    try
    {
        string szout = "There are " + annMenu.Count + " Items";
        Console.WriteLine(szout);
        for (short i = 0; i < annMenu.Count; i++)
        {
            LTANNLib.AnnMenuItemTypeConstants mnuType = new LTANNLib.AnnMenuItemTypeConstants();
            mnuType = (LTANNLib.AnnMenuItemTypeConstants)annMenu.get_ItemType(i);
            string mnuText = "";
            int mnuID = -1;
            bool mnuEnable = false;
            bool mnuChecked = false;
            if (mnuType != LTANNLib.AnnMenuItemTypeConstants.ANN_MENUITEMTYPE_SEPARATOR)
            {
                mnuText = "" + annMenu.get_ItemString(i);
                mnuID = (int)annMenu.get_ItemID(i);
                mnuEnable = (bool)annMenu.get_ItemEnabled(i);
                mnuChecked = (bool)annMenu.get_ItemChecked(i);
            }
            Console.WriteLine("[" + i + "] text=" + mnuText + ", ID=" + mnuID
                + ", enable=" + mnuEnable + ", checked=" + mnuChecked);
        }
 }
 catch (System.Exception ex)
 {
  throw ex;
 }
}

Please help,

This only can be done to the menu items created by the user,
not the LEADTOOLS built-in menu. When you create your own annotation menu
items, use the OnAnnUserMenu event to return the ID of the menu item has been clicked.