HRESULT CLSIDFromProgID(
LPCOLESTR lpszProgID,     // 指向ProgID的指针
LPCLSID pclsid             // 指向CLSID的指针
);
WINOLEAPI ProgIDFromCLSID(
REFCLSID clsid,       // CLSID 的值，已知
LPOLESTR * lplpszProgID   // 指向接收ProgID的缓冲区
     
);

 CLSID clsid = {0x86A70E6F,0x3F1C,0x46B5,{0x86,0xF9,0xC2,0x1D,
0xAD,0x69,0xC7,0x56}};
CString strClsID;
strClsID.Format("%x-%x-%x-%x-%x-%x-%x-%x-%x-%x-%x",clsid.Data1,
clsid.Data2,clsid.Data3,clsid.Data4[0],clsid.Data4[1],clsid.Data4[2],
clsid.Data4[3],clsid.Data4[4],clsid.Data4[5],clsid.Data4[6],
clsid.Data4[7]);
SetDlgItemText(IDC_CLSID_ED,strClsID);
HRESULT hr;
LPOLESTR lpwProgID = NULL;
hr = ::ProgIDFromCLSID( clsid, &lpwProgID );
if ( SUCCEEDED(hr) )
{
//::MessageBoxW( NULL, lpwProgID, L"ProgID", MB_OK );
USES_CONVERSION;
LPCTSTR lpstr =  OLE2CT( lpwProgID );
SetDlgItemText(IDC_PROGID_ED,lpstr); 
IMalloc * pMalloc = NULL;
hr = ::CoGetMalloc( 1, &pMalloc );   // 取得 IMalloc
if ( SUCCEEDED(hr) )
{
pMalloc->Free( lpwProgID );      // 释放ProgID内存
pMalloc->Release();               // 释放IMalloc
}
}