C# winform 获取鼠标点击位置

说明：该篇随笔的代码内容并非出自本人，是在其他网站搜寻的，出处已经不记得了，本次随笔只为记录，目的帮助自己，帮助他人。

实现的原理也不做多的赘述，直接上代码。

第一个类是需要用到的Windows API

public class Win32Api

    {

        [StructLayout(LayoutKind.Sequential)]

        public class POINT

        {

            public int x;

            public int y;

        }

        [StructLayout(LayoutKind.Sequential)]

        public class MouseHookStruct

        {

            public POINT pt;

            public int hwnd;

            public int wHitTestCode;

            public int dwExtraInfo;

        }

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

        //安装钩子

        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]

        public static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId);

        //卸载钩子

        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]

        public static extern bool UnhookWindowsHookEx(int idHook);

        //调用下一个钩子

        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]

        public static extern int CallNextHookEx(int idHook, int nCode, IntPtr wParam, IntPtr lParam);

    }

Windows API

第二个类是用于监控鼠标移动，鼠标点击的

public class MouseHook

    {

        private Point point;

        private Point Point

        {

            get { return point; }

            set

            {

                if (point != value)

                {

                    point = value;

                    if (MouseMoveEvent != null)

                    {

                        var e = new MouseEventArgs(MouseButtons.None, , point.X, point.Y, );

                        MouseMoveEvent(this, e);

                    }

                }

            }

        }

        private int hHook;

        private const int WM_LBUTTONDOWN = 0x201;

        private const int WM_RBUTTONDOWN = 0x204;

        public const int WH_MOUSE_LL = ;

        public Win32Api.HookProc hProc;

        public MouseHook()

        {

            this.Point = new Point();

        }

        public int SetHook()

        {

            hProc = new Win32Api.HookProc(MouseHookProc);

            hHook = Win32Api.SetWindowsHookEx(WH_MOUSE_LL, hProc, IntPtr.Zero, );

            return hHook;

        }

        public void UnHook()

        {

            Win32Api.UnhookWindowsHookEx(hHook);

        }

        private int MouseHookProc(int nCode, IntPtr wParam, IntPtr lParam)

        {

            Win32Api.MouseHookStruct MyMouseHookStruct = (Win32Api.MouseHookStruct)Marshal.PtrToStructure(lParam, typeof(Win32Api.MouseHookStruct));

            if (nCode < )

            {

                return Win32Api.CallNextHookEx(hHook, nCode, wParam, lParam);

            }

            else

            {

                if (MouseClickEvent != null)

                {

                    MouseButtons button = MouseButtons.None;

                    int clickCount = ;

                    switch ((Int32)wParam)

                    {

                        case WM_LBUTTONDOWN:

                            button = MouseButtons.Left;

                            clickCount = ;

                            break;

                        case WM_RBUTTONDOWN:

                            button = MouseButtons.Right;

                            clickCount = ;

                            break;

                    }

                    var e = new MouseEventArgs(button, clickCount, point.X, point.Y, );

                    MouseClickEvent(this, e);

                }

                this.Point = new Point(MyMouseHookStruct.pt.x, MyMouseHookStruct.pt.y);

                return Win32Api.CallNextHookEx(hHook, nCode, wParam, lParam);

            }

        }

        public delegate void MouseMoveHandler(object sender, MouseEventArgs e);

        public event MouseMoveHandler MouseMoveEvent;

        public delegate void MouseClickHandler(object sender, MouseEventArgs e);

        public event MouseClickHandler MouseClickEvent;

    }

MouseHook

最后直接在窗体中调用重写的事件即可

public getLocationForm()

        {

            InitializeComponent();

        }

        MouseHook mh;

        private void getLocationForm_Load(object sender, EventArgs e)

        {

            mh = new MouseHook();

            mh.SetHook();

            mh.MouseMoveEvent += mh_MouseMoveEvent;

            mh.MouseClickEvent += mh_MouseClickEvent;

        }

        private void mh_MouseClickEvent(object sender, MouseEventArgs e)

        {

            if (e.Button == MouseButtons.Right)

            {

                //MessageBox.Show(e.X + "-" + e.Y);

                textBox1.Text = e.X.ToString();

                textBox2.Text = e.Y.ToString();

            }

        }

        private void mh_MouseMoveEvent(object sender, MouseEventArgs e)

        {

            int x = e.Location.X;

            int y = e.Location.Y;

            textBox1.Text = x + "";

            textBox2.Text = y + "";

        }

        private void Form1_FormClosed(object sender, FormClosedEventArgs e)

        {

            mh.UnHook();

        }

getLocationForm

C# winform 获取鼠标点击位置的相关教程结束。