鼠标悬停在面板上时显示值。 [英] Display values while mouse hover on panel.

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 !!

推荐答案

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);
	}

}

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