C / C++ / MFC

    _ConnectionPtr m_pConn1;
HRESULT hr = m_pConn1.CreateInstance (__uuidof (Connection));

if (FAILED (hr))
{
    AfxMessageBox ("Can't create intance of Connection");
}



if (FAILED (m_pConn1->Open (_bstr_t ("Provider=Microsoft.Jet.OLEDB.4.0;Data Source = "+PhotoDBName ),
            _bstr_t (""), _bstr_t (""), adModeUnknown)))
    {
    AfxMessageBox ("Can't open datasource");
    return 0 ;
    }

MMRESULT            mmr; 
ACMFORMATCHOOSE     afc; 
WAVEFORMATEX        wfxSelection; 
WAVEFORMATEX        wfxEnum; 
 
// Initialize the ACMFORMATCHOOSE members. 
memset(&afc, 0, sizeof(afc)); 
 
afc.cbStruct    = sizeof(afc); 
afc.fdwStyle    = 0L;               // no special style flags 
afc.hwndOwner   = ghWnd;             // hwnd of parent window 
afc.pwfx        = &wfxSelection;    // wfx to receive selection 
afc.cbwfx       = sizeof(wfxSelection); 
afc.pszTitle    = TEXT("16 Bit PCM Selection"); 
 
//  Request that all 16-bit PCM formats be displayed for the user 
//  to select from. 
memset(&wfxEnum, 0, sizeof(wfxEnum)); 

wfxEnum.wFormatTag = WAVE_FORMAT_PCM; 
wfxEnum.wBitsPerSample = 16;

afc.fdwEnum = ACM_FORMATENUMF_WFORMATTAG | ACM_FORMATENUMF_WBITSPERSAMPLE; 
afc.pwfxEnum = &wfxEnum; 

mmr = acmFormatChoose(&afc); 
if ((MMSYSERR_NOERROR != mmr) && (ACMERR_CANCELED != mmr)) 
{ 
    // There was a fatal error in bringing up the list 
    // dialog box (probably invalid input parameters). 
}