Embedding Window Media Player in mfc - c++

Question

I am embedding a window media player activex control in a dialog based mfc application. Now all play/pause button is getting disabled. I want to enable them.
As I have put put_uiMode(_T("mini"));
and when writingthese lines
hr = m_spWMPPlayer->put_fullScreen(VARIANT_TRUE)
hr = m_spWMPPlayer->get_fullScreen(&b); // returned b = VARIANT_FALSE
value of b is coming FALSE.
What could be the error? Any one knows this?
Thank You
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
}

Answer 1

MSDN says:
For full-screen mode to work properly when embedding the Windows Media Player control, the video display area must have a height and width of at least one pixel. If the BSTR specified in IWMPPlayer::put_uiMode is set to "mini" or "full", the height of the control itself must be 65 pixels or greater to accommodate the video display area in addition to the user interface.
This assumes that the player is already properly initialized as ActiveX control. In your code, you simply create a COM object without doing any ActiveX Control initialization. Presumably the player detects this and reports error.
Your hr in respective put_fullScreen call should have 0xC00D0FD2 NS_E_WMPOCX_NO_ACTIVE_CORE "The requested method or property is not available because the Windows Media Player ActiveX control has not been properly activated." to indicate the problem.