如何在c ++ builder中使用TChartValueList

Question

当尝试访问TChartValueList的元素时，任何人都可以帮助检查下面列出的代码段，其中包含错误编译，谢谢。

((TCandleSeries *) chartInfo.area[index].series[SER_PR_PRICE])->OnGetPointerStyle = &SeriesCandleGetPointerStyle;

TSeriesPointerStyle _fastcall TForm1::SeriesCandleGetPointerStyle(TChartSeries *Sender, int ValueIndex)
{

TCandleSeries               *series;

gSeries = findSeries(AREA_TYPE_PRICE, SER_PR_PRICE);
if (gSeries != NULL)
{
    series = (TCandleSeries *) gSeries;

    series->HighLowPen->Color = series->DownCloseColor;

    if (ValueIndex > 0)
    {
        if (series->CloseValues[ValueIndex] >= series->OpenValues[ValueIndex])
            *****^^^^^^^^^^ [BCC32 Error] E2093 'operator>=' not implemented in type 'TChartValueList' for arguments of the same type*****
            series->HighLowPen->Color = series->UpCloseColor;
    }
}

return psRectangle;
}