how to remove help button

Hi, i write some code like (button example),  the example has not help button, but my code has.  I can't find difference

some code:

CXTPResizePropertySheet dlg(AFX_IDS_APP_TITLE, 0, 0, xtpResizeNoVertical | xtpResizeNoHorizontal);
    dlg.m_psh.dwFlags |= PSH_NOAPPLYNOW;

    CButtonDlg pageButtons;
    dlg.AddPage(&pageButtons);

   
    m_pMainWnd = &dlg;
    INT_PTR nResponse = dlg.DoModal();