about VC+MySQL problem:)

i install mysql odbc V5.0 driver
i need to ADO Connect MYSQL DB;

code:
_ConnectionPtr m_CMConnect;
::CoInitialize(NULL);
m_CMConnect.CreateInstance(__uuidof(Connection));
m_CMConnect->Open("Provider=MySQL;server=localhost;DataBase=test;port=3306;uid=root;pwd=","","",-1);

but Program run error....

how to Ado Connect MYSQL DB;

thank:)