Winform中设置ZedGraph鼠标双击获取距离最近曲线上的点的坐标值

快来打我* 2023-10-11 13:43 18阅读 0赞

## 场景 ##

WInforn中设置ZedGraph的焦点显示坐标格式化以及显示三个坐标数的解决办法：

[https://blog.csdn.net/BADAO\_LIUMANG\_QIZHI/article/details/102466190][https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_102466190]

Winform中实现ZedGraph的多条Y轴(附源码下载)：

[https://blog.csdn.net/BADAO\_LIUMANG\_QIZHI/article/details/100132245][https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_100132245]

在多条曲线中，鼠标双击面板，弹窗显示距离焦点最近的坐标的值。

### 效果 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70][]

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## 实现 ##

双击事件绑定

zgc.DoubleClickEvent += zgc_DoubleClickEvent;

其中zgc

ZedGraphControl zgc

实现方法

private static bool zgc_DoubleClickEvent(ZedGraphControl sender, MouseEventArgs e)
            {
                PointF mousePt = new PointF(e.X, e.Y);
                CurveItem nearstCurve;
                int i ;
                Global.zedGraphControl1.GraphPane.FindNearestPoint(mousePt, out nearstCurve,out i);
                if (nearstCurve != null && nearstCurve.Points[i]!= null)
                {
                    Double x = nearstCurve.Points[i].X;
                    Double y = nearstCurve.Points[i].Y;
                    string title = Global.zedGraphControl1.GraphPane.XAxis.Title.Text;
                    DevExpress.XtraEditors.XtraMessageBox.Show("索引值：" + i + " X：" + x + " Y:" + y + " Xtitle:" + title);
                }
                return true;
            }

[https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_102466190]: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/102466190
[https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_100132245]: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/100132245
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20191009172730980.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[https_blog.csdn.net_badao_liumang_qizhi]: https://blog.csdn.net/badao_liumang_qizhi