C# 鼠标悬停问题？------------摘抄

最新推荐文章于 2025-06-12 17:40:21 发布

原创最新推荐文章于 2025-06-12 17:40:21 发布 · 1.2k 阅读

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CC 4.0 BY-SA版权

文章标签：

#c# #button #textbox #object #class #system

本文介绍了一个使用 C# 实现的鼠标悬停跟踪功能，通过调用 comctl32.dll 中的 _TrackMouseEvent 函数并自定义 TRACKMOUSEEVENT 结构体来实现对按钮组件的鼠标悬停事件的监听。

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

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        bool flag = false;
        public Form1()
        {
            InitializeComponent();
        }

        private bool MyTrackMouseEvent(IntPtr handle)
        {
            TRACKMOUSEEVENT tme = new TRACKMOUSEEVENT();
            tme.dwFlags = 1; //注意这里，这里只重置了TME_HOVER
            tme.hwndTrack = handle;
            return _TrackMouseEvent(tme);
        }
        [DllImport("comctl32.dll", ExactSpelling = true)]
        private static extern bool _TrackMouseEvent(TRACKMOUSEEVENT tme);

        private void button1_MouseMove(object sender, MouseEventArgs e)
        {
            if (flag)
            {
                MyTrackMouseEvent((sender as Control).Handle);
                flag = !flag;
            }
        }

        private void button1_MouseHover(object sender, EventArgs e)
        {
            textBox1.AppendText(DateTime.Now.ToString()+"/n");
            flag = true;
        }
    }
    [StructLayout(LayoutKind.Sequential)]
    public class TRACKMOUSEEVENT
    {
        public int cbSize;
        public int dwFlags;
        public IntPtr hwndTrack;
        public int dwHoverTime;
        public TRACKMOUSEEVENT() {
            this.cbSize = Marshal.SizeOf(typeof(TRACKMOUSEEVENT));
            this.dwHoverTime = 400;
        }
    }
}