鼠标悬停在面板上时显示值。

问题描述：

我在面板中绘制了一条路径（使用选择区域的坐标）。在此我想在面板路径上悬停时显示值。我该怎么做？请帮帮我！

我的尝试：

I drawn a path(using coordinates of selecting area) in the panel.In this I want to display the values while hovering on the panel path.How will I do this? Please Help Me !

What I have tried:

points1.Add(new Point(Convert.ToInt16(x), Convert.ToInt16(y)));
Pen p = new Pen(Color.Blue, 2);
Graphics gr = Graphics.FromImage(panelname.BackgroundImage);
gr.SmoothingMode = SmoothingMode.AntiAlias;                  
AdjustableArrowCap bigArrow = new AdjustableArrowCap(5, 5);                  
p.CustomEndCap = bigArrow;                           
g.DrawLine(p, points1[i1], points1[i1 + 1]);

这仅适用于面板中的路径显示。当鼠标悬停在路径上时，我不知道如何在路径上显示值。指导我!!

This is only for path display in panel.I don't know how to display value over the path while mouse hover the path.Guide me !!

答

这方面的一个例子可能是：

An example for this could be :

using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;
public class myPanel : Panel
{

	public List<Point> ClickPoints {
		get { return myClickPoints; }
		set { myClickPoints = value; }
	}

	private List<Point> myClickPoints = new List<Point>();
	public void ClearList()
	{
		myClickPoints.Clear();
	}

	protected override void OnMouseClick(MouseEventArgs e)
	{
		myClickPoints.Add(new Point(e.Location.X, e.Location.Y));
		base.OnMouseClick(e);
		this.Invalidate();
	}

	protected override void OnPaint(PaintEventArgs e)
	{
		e.Graphics.DrawString(myClickPoints.Count.ToString, Font, Brushes.Black, new Point(0, 10));

		base.OnPaint(e);
	}

}

鼠标悬停在面板上时显示值。

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