error C2065: 'MYSQL' : undeclared identifier

void CMfc2Dlg::OnButton1() 
{
	// TODO: Add your control notification handler code here

				unsigned short Port = 3306;
				char *IPAddress = "localhost";
				char *UserName = "admin";
				char *Password = "BroadGate";
				char *DBName =  "bedrock";

				MYSQL *ssock;
				MYSQL_RES   *result;
				MYSQL_ROW   row;
				//char execsql[500];
				ssock = (MYSQL *)malloc(sizeof(MYSQL));
				mysql_init(ssock);
				if(ssock == NULL)
				{
					MessageBox("EROR: MySQL ssock init error. \n");
				}
				ssock = mysql_real_connect(ssock, IPAddress, UserName, Password, NULL, Port, NULL, 0);
				if(!ssock)
				{
					MessageBox("conn fail... \n");
					mysql_errno(ssock);
				}
				else
				{
							cout<<" MySql Connected\n";
							mysql_query(ssock, "call testproc");
  
						  result = mysql_store_result(ssock);
						  num_fields = mysql_num_fields(result);
						  while ((row = mysql_fetch_row(result)))
						  {
							  for(i = 0; i < num_fields; i+=1)
							  {
								  cout<< row[i] << endl;
								  cout<<"\n";
							  }
							  
						  }

						  mysql_free_result(result);
						  mysql_close(conn);
						    system("pause");
							return;
				}

				if(mysql_select_db(ssock, DBName) != 0)
				{
					MessageBox("select db error. \n");
				}
	
}