Deleting some items from my background context menu

[Doseerock]

I found some codes in the online samples to delete some items form a context menu as follows:

chart1.Commands[(int)CommandID.ContextMenuBack].RemoveSubCommand(0);

However I can't find out how to change this code in VC++.

I guess I should write as below, but I have no idea which code I should put into ??????.

m_pChart->Commands->GetItems(?????)->RemoveSubCommand(0);