C# 自定义鼠标样式

接上一篇，不调用 API 的方式。

▲ 样式效果

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace MouseSt
{
    using System.Runtime.InteropServices;
    using System.Reflection;

    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            Bitmap a = (Bitmap)Bitmap.FromFile("1.gif");
            SetCursor(a, new Point(0, 0));
        }

        public void SetCursor(Bitmap cursor, Point hotPoint)
        {
            int hotX = hotPoint.X;
            int hotY = hotPoint.Y;
			// 这里为什么要 * 2
            Bitmap myNewCursor = new Bitmap(cursor.Width * 2  - hotX, cursor.Height * 2 - hotY);
            Graphics graphics = Graphics.FromImage(myNewCursor);
            graphics.Clear(Color.FromArgb(0, 0, 0, 0));
            graphics.DrawImage(cursor, cursor.Width - hotX, cursor.Height - hotY, cursor.Width, cursor.Height);
            this.Cursor = new Cursor(myNewCursor.GetHicon());

            graphics.Dispose();
            myNewCursor.Dispose();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            MessageBox.Show("被点击!");
        }
    }
}