近日在使用PrintFormat()函数，照F1 help依葫芦画瓢，死活不能正常显示，如下代码，

double margin_call = AccountInfoDouble(ACCOUNT_MARGIN_SO_CALL); 
double stop_out    = AccountInfoDouble(ACCOUNT_MARGIN_SO_SO); 

string sp = "-------------";

//PrintFormat(sp,"MarginCall= %f, StopOut= %f",AccountInfoDouble(ACCOUNT_MARGIN_SO_CALL),stop_out); //显示不正常
//Print(sp,"---MarginCall= ",DoubleToStr(margin_call,2),unit); //DoubleToStr(margin_call,2),
//Print(sp,"---StopOut= ",DoubleToStr(stop_out,2),unit); //,DoubleToStr(stop_out,2)
 PrintFormat("%s---MarginCall= %G%s, StopOut= %G%s",sp,margin_call,unit,stop_out,unit);