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);
    }

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, 0, point.x, point.y, 0);
                        mousemoveevent(this, e);
                    }
                }
            }
        }
        private int hhook;
        private const int wm_lbuttondown = 0x201;
        private const int wm_rbuttondown = 0x204;
        public const int wh_mouse_ll = 14;
        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, 0);
            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 < 0)
            {
                return win32api.callnexthookex(hhook, ncode, wparam, lparam);
            }
            else
            {
                if (mouseclickevent != null)
                {
                    mousebuttons button = mousebuttons.none;
                    int clickcount = 0;
                    switch ((int32)wparam)
                    {
                        case wm_lbuttondown:
                            button = mousebuttons.left;
                            clickcount = 1;
                            break;
                        case wm_rbuttondown:
                            button = mousebuttons.right;
                            clickcount = 1;
                            break;
                    }

                    var e = new mouseeventargs(button, clickcount, point.x, point.y, 0);
                    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;
    }

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();
        }