//多值函数bbq，获得实时行情，不带WindCallback传参为取快照
//带WindCallback传参为订阅，数据通过fnCallback返回
public WindData bbq(string windCodes, string fields, string options)
{
checkConnection();
object ocodes, ofields, otimes, odata;
int errCode;
odata = wdc.bbq_syn(windCodes, fields, options, out ocodes, out ofields, out otimes, out errCode);
return(formatWD(ocodes, ofields, otimes, odata, errCode));
}