#include <atlbase.h>
#include <atldbcli.h>  

QStringList OLEDBproviders()
  {
    QStringList list;
    CoInitialize(NULL);
    {
      CEnumerator rs;
      rs.Open();
      while (rs.MoveNext() == S_OK)
        list << QString::fromUtf16(rs.m_szName);
    }
    CoUninitialize();
    return list;
  };