Встраивание Windows Media Player в MFC

Я встраиваю элемент управления activex оконного медиаплеера в диалоговое приложение mfc. Теперь все кнопки play / pause отключены. Я хочу включить их.

Как я поставил put_uiMode(_T("mini"));
и при написании этих строк

hr = m_spWMPPlayer->put_fullScreen(VARIANT_TRUE)
hr = m_spWMPPlayer->get_fullScreen(&b); // returned b = VARIANT_FALSE

значение b приближается к FALSE.

В чем может быть ошибка? Кто-нибудь знает это?

Благодарю вас

BOOL CLuminPlayerDlg::OnInitDialog()
{
CDialogEx::OnInitDialog();

CComPtr<IWMPPlayer>         m_spWMPPlayer;
CComPtr<IWMPRemoteMediaServices> m_spServices;
CComPtr<IWMPControls>           m_spControls;

// Set the icon for this dialog.  The framework does this automatically
//  when the application's main window is not a dialog
SetIcon(m_hIcon, TRUE);         // Set big icon
SetIcon(m_hIcon, FALSE);        // Set small icon

// TODO: Add extra initialization here
HRESULT hr = NULL;
if(SUCCEEDED(hr))
{
hr = CoCreateInstance(__uuidof(WindowsMediaPlayer), 0, CLSCTX_INPROC_SERVER, IID_IOleObject, (void**)&m_spServices);

if(SUCCEEDED(hr))
{
BSTR str = NULL;

VARIANT_BOOL b ;
hr = m_spServices->QueryInterface(__uuidof(IWMPPlayer), (void**)&m_spWMPPlayer);
if(SUCCEEDED(hr))
{

hr = m_spWMPPlayer->get_enabled(&b); // returned b= VARIANT_TRUE
hr = m_spWMPPlayer->get_enableContextMenu(&b); //returned b = VARIANT_TRUE
hr = m_spWMPPlayer->get_uiMode(&str); // returned str = L"full"hr = m_spWMPPlayer->put_uiMode(_T("mini")); //hr = S_OK
hr = m_spWMPPlayer->get_uiMode(&str); // str = L"mini"hr = m_spWMPPlayer->put_fullScreen(VARIANT_TRUE);
hr = m_spWMPPlayer->get_fullScreen(&b); // returned b = VARIANT_FALSE
hr = m_spWMPPlayer->put_URL(_T("C:\\Visual Studio 2012\\Projects\\Lumin-Player\\Debug\\abc.mp4")); //returned hr = S_OK

hr = m_spServices->QueryInterface(__uuidof(IWMPControls), (void**)&m_spControls); // returned hr = S_OK
if(SUCCEEDED(hr))
{
hr = m_spControls->play(); //returned hr = S_OK
}
}
}
}

return TRUE;  // return TRUE  unless you set the focus to a control
}