在没有可见标记的情况下获取 Devexpress 折线图中的点击点

Question

我正在尝试在 winforms 中的 deveexpress 1.14 折线图上获得点击点。将 LineSeriesView MarkerVisibility 设置为 true 时效果很好，但我不希望像那样标记点，我想要一条平滑的线。如果不这样做，我如何获得 Seriespoint？

private void chart_MouseClick(object sender, MouseEventArgs e) {
  // Obtain the object being clicked.
    ChartHitInfo hi = chart.CalcHitInfo(e.X, e.Y);
    // Check whether it was a series point, and if yes - 
    // obtain its argument, and pass it to the detail series.
    SeriesPoint point = hi.SeriesPoint; // hi.SeriesPoint IS NULL

    if (point != null) {
       // do stuff

    }
}

该图表的 runtimeHitTesting 已开启 谢谢！

Answer 1

被黑：

void chart_CustomDrawSeries(object sender, CustomDrawSeriesEventArgs e)
    {
        LineDrawOptions drawOptions = e.SeriesDrawOptions as LineDrawOptions;
        if (drawOptions == null)
            return;
        drawOptions.Marker.Color = Color.Transparent;
        drawOptions.Marker.BorderColor = Color.Transparent;
    }

记得设置 `this.chart.CacheToMemory = true;所以事件不会一直触发。