How to modify the content of POP-MENU (right-click pop-up menu)

CMenu Menu;

ClientToscreen (& Point);

Verify (iDR_Menu1));

Cmenu * popup = menu.getsubmenu (0);

Assert (Popup! = Null);

Popup-> EnableMenuItem (ID_POPUP1, MF_BYCOMMAND | MF_G_G_GRAYED);

Popup-> ModifyMenu (ID_POPUP1, MF_BYCOMMAND, ID_POPUP1, "11");

Popup-> TRACKPOPUPMENU (TPM_LEFTALIGN | TPM_RightButton, Point.x, Point.y, this);