VC 如何通过api与MySQL数据库连接

void CDbtestDlg::OnButton1()
{
// TODO: Add your control notification handler code here
AfxOleInit();
m_mysql=mysql_init(NULL);
mysql_real_connect(m_mysql,m_hst,m_usr,m_pwd,m_db,0,NULL,0);
mysql_query(m_mysql,"set names GBK");//
mysql_real_query(m_mysql,"SELECT * FROM tablecodes t",(unsigned long)strlen("SELECT * FROM tablecodes t"));
m_res=mysql_use_result(m_mysql);
while((m_row=mysql_fetch_row(m_res))!=NULL)
((CListBox*)GetDlgItem(IDC_LIST1))->AddString((LPCTSTR)m_row[2]);
my_ulonglong i=mysql_num_rows(m_res);
char temp[20];
AfxMessageBox(itoa(i,temp,10));
mysql_free_result(m_res);
mysql_close(m_mysql);
((CButton*)GetDlgItem(IDC_BUTTON1))->EnableWindow(FALSE);
}