全局钩子定义

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace WindowsFormsApp1
{
    public static class GlobalMousePosition
    {
        #region 获取鼠标当前位置
        public const int WH_MOUSE_LL = 14;

        public enum MouseMessages
        {
            WM_MOUSEMOVE = 0x0200
        }

        public delegate int LowLevelMouseProc(int nCode, IntPtr wParam, IntPtr lParam);

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        public static extern IntPtr SetWindowsHookEx(int idHook, LowLevelMouseProc lpfn, IntPtr hMod, uint dwThreadId);

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool UnhookWindowsHookEx(IntPtr hhk);

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        public static extern int CallNextHookEx(IntPtr hhk, int nCode, IntPtr wParam, IntPtr lParam);

        [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        public static extern IntPtr GetModuleHandle(string lpModuleName);
        #endregion


        #region 点击事件
        [DllImport("user32.dll")]
        static extern bool SetCursorPos(int x, int y);

        [DllImport("user32.dll")]
        public static extern void mouse_event(uint dwFlags, int dx, int dy, uint dwData, int dwExtraInfo);

        // 模拟鼠标点击一次
        public static void SimulateMouseClick(int x, int y)
        {
            SetCursorPos(x, y);
            Thread.Sleep(100);  // 等待 100 毫秒，确保鼠标移动到指定位置

            // 模拟鼠标按下和释放操作（模拟点击）
            mouse_event(0x0002, x, y, 0, 0);  // 鼠标左键按下
            mouse_event(0x0004, x, y, 0, 0);  // 鼠标左键释放
        }
        #endregion

    }
}

winfrom窗体代码:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
using static System.Net.Mime.MediaTypeNames;
using static WindowsFormsApp1.GlobalMousePosition;

namespace WindowsFormsApp1
{
    public partial class Form1 : Form
    {
        private LowLevelMouseProc mouseProc;
        private IntPtr mouseHookId = IntPtr.Zero;
        public Form1()
        {
            InitializeComponent();
            this.TopMost = true;
        }

        protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);

            // 注册全局鼠标钩子
            mouseProc = HookCallback;
            using (Process curProcess = Process.GetCurrentProcess())
            using (ProcessModule curModule = curProcess.MainModule)
            {
                mouseHookId = SetWindowsHookEx(WH_MOUSE_LL, mouseProc, GetModuleHandle(curModule.ModuleName), 0);
            }
        }

        protected override void OnFormClosing(FormClosingEventArgs e)
        {
            base.OnFormClosing(e);

            // 取消注册全局鼠标钩子
            UnhookWindowsHookEx(mouseHookId);
        }

        private int HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
        {
            if (nCode >= 0 && MouseMessages.WM_MOUSEMOVE == (MouseMessages)wParam)
            {
                // 获取鼠标位置
                Point mousePosition = Cursor.Position;

                // 更新你的全局记录逻辑，比如将当前鼠标位置保存到全局变量或日志中
                // ...
                labelMousePosition.Text = string.Format("当前鼠标位置：X={0}, Y={1}", mousePosition.X, mousePosition.Y);
            }

            return CallNextHookEx(mouseHookId, nCode, wParam, lParam);
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Clipboard.Clear(); // 清空剪贴板
            int x = int.Parse(this.x.Text);
            int y = int.Parse(this.y.Text);
            string text = this.textbox.Text;
            Clipboard.SetText(text);
            Thread.Sleep(100);
            SimulateMouseClick(x, y);
            Thread.Sleep(100);
            SendKeys.Send("^(v)");
            Thread.Sleep(100);
            SendKeys.Send("\t");
        }
    }
}

效果截图：