c#使用API进行模拟鼠标点击 底层操作同样简单

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 SimulateMouse
{
    public partial class DemoForm : Form
    {
        [StructLayout(LayoutKind.Sequential)]
        struct NativeRECT
        {
            public int left;
            public int top;
            public int right;
            public int bottom;
        }

        [Flags]
        enum MouseEventFlag : uint
        {
            Move        = 0x0001,
            LeftDown    = 0x0002,
            LeftUp      = 0x0004,
            RightDown   = 0x0008,
            RightUp     = 0x0010,
            MiddleDown  = 0x0020,
            MiddleUp    = 0x0040,
            XDown       = 0x0080,
            XUp         = 0x0100,
            Wheel       = 0x0800,
            VirtualDesk = 0x4000,
            Absolute    = 0x8000
        }

        [DllImport("user32.dll")]
        static extern bool SetCursorPos(int X, int Y); 

        [DllImport("user32.dll")]
        static extern void mouse_event(MouseEventFlag flags, int dx, int dy, uint data, UIntPtr extraInfo);

        [DllImport("user32.dll")]
        static extern IntPtr FindWindow(string strClass, string strWindow);

        [DllImport("user32.dll")]
        static extern IntPtr FindWindowEx(HandleRef hwndParent, HandleRef hwndChildAfter, string strClass, string strWindow);

        [DllImport("user32.dll")]
        static extern bool GetWindowRect(HandleRef hwnd, out NativeRECT rect);

        const int AnimationCount = 800;
       
        private Point endPosition;

        private int count;

        public DemoForm()
        {
            InitializeComponent();
        }

        private void btnStart_Click(object sender, EventArgs e)
        {
            NativeRECT rect;

            IntPtr ptrTaskbar = FindWindow("Shell_TrayWnd", null);
            if (ptrTaskbar == IntPtr.Zero)
            {
                MessageBox.Show("No taskbar found.");
                return;
            }

            IntPtr ptrStartBtn = FindWindowEx(new HandleRef(this, ptrTaskbar), new HandleRef(this, IntPtr.Zero), "Button", null);
            if (ptrStartBtn == IntPtr.Zero)
            {
                MessageBox.Show("No start button found.");
                return;
            }

            GetWindowRect(new HandleRef(this, ptrStartBtn), out rect);

            endPosition.X = (rect.left + rect.right) / 2;
            endPosition.Y = (rect.top + rect.bottom) / 2;

            if (chkAnimation.Checked)
            {
                this.count = AnimationCount;
                movementTimer.Start();
            }
            else
            {
                SetCursorPos(endPosition.X, endPosition.Y);
                mouse_event(MouseEventFlag.LeftDown, 0, 0, 0, UIntPtr.Zero);
                mouse_event(MouseEventFlag.LeftUp, 0, 0, 0, UIntPtr.Zero);
            }
        }

        private void movementTimer_Tick(object sender, EventArgs e)
        {
            int stepx = (endPosition.X - MousePosition.X) / count;
            int stepy = (endPosition.Y - MousePosition.Y) / count;

            count--;
            if (count == 0)
            {
                movementTimer.Stop();
                mouse_event(MouseEventFlag.LeftDown, 0, 0, 0, UIntPtr.Zero);
                mouse_event(MouseEventFlag.LeftUp, 0, 0, 0, UIntPtr.Zero);
            }

            tbCursor.Text = String.Format("({0}, {1})", MousePosition.X, MousePosition.Y);

            mouse_event(MouseEventFlag.Move, stepx, stepy, 0, UIntPtr.Zero);
        }
    }
}