A:实参,对比两个范例(范例一是实参传递,范例二是形参传递)。其中,范例一是正确的使用方法:
范例一:
SetSysParam(pn_bk(),'上证A股');
a:= QueryBK('上证A股',"",@True,"","板块名",@DefaultBKName(),
"主营业务收入同比(%)",@Bk_MainIncomeGrowRatio(20130930,0,1,0,0));
return a;
//结果如图:
范例二:
SetSysParam(pn_bk(),'上证A股');
rDate:=20130930;
a:= QueryBK('上证A股',"",@True,"","板块名",@DefaultBKName(),
"主营业务收入同比(%)",@Bk_MainIncomeGrowRatio(rDate,0,1,0,0));
return a;
//结果如图(参数传递失败):