How rename tree control item

BEGIN_MESSAGE_MAP(CMyTreeCtrl, CTreeCtrl)
    ON_WM_CONTEXTMENU()
END_MESSAGE_MAP()

void CMyTreeCtrl::OnContextMenu(CWnd* pWnd, CPoint point)
{
    HTREEITEM hCurSel = GetSelectedItem();
    if (point.x < 0 && point.y < 0) // if opened by keyboard (not mouse)
    {
        RECT rect;
        if (hCurSel)
        {
            GetItemRect(hCurSel, &rect, TRUE); // relative to control, text only
            ClientToScreen(&rect); // convert to screen coordinates
            point.SetPoint(rect.left, rect.bottom); // below selected item
        }
        else
        {
            GetWindowRect(&rect);
            point.SetPoint(rect.left, rect.top); // left/top of control
        }
    }
    else // Select the item that is at the clicked point
    {
        // When right clicking on the control we should get the focus first
        //  to show the active selection. 
        // Because many context commands use the selection (Copy, Cut, Clear).
        if (GetFocus() != this)
            SetFocus();
        CPoint pt(point); // we need window relative coordinates
        ScreenToClient(&pt);
        hCurSel = HitTest(pt);
        if (hCurSel != NULL)
            SelectItem(hCurSel);
        else // if not clicked on item (e.g. on scrollbar)
        { //  use default handling
            CTreeCtrl::OnContextMenu(pWnd, point);
            return;
        }
    }

    // Example loading menu from resources
    CMenu menu;
    VERIFY(menu.LoadMenu(IDR_MYTREECTRL_POPUP_MENU));
    CMenu *pSub = menu.GetSubMenu(0); // Get the pop-up menu.

    // Gray out or remove items according to various conditions
    if (NULL == hCurSel)
        pSub->EnableMenuItem(IDC_RENAME_ITEM, MF_GRAYED);

    // Show the popup menu.
    // Example uses TPM_RETURNCMD to return the ID of the selected menu item
    //  rather than calling the handler.
    int nCommand = pSub->TrackPopupMenuEx(
        TPM_LEFTALIGN | TPM_RIGHTBUTTON | TPM_VERPOSANIMATION | TPM_RETURNCMD | TPM_NONOTIFY,
        point.x, point.y, 
        AfxGetMainWnd(), NULL);

    switch (nCommand)
    {
    case IDC_RENAME_ITEM : // rename menu item
        SetItemText(hCurSel, _T("New item text"));
        break;
    default : // all other menu items
        if (nCommand)
            SendMessage(WM_COMMAND, nCommand);
    }
}