C#父窗体右击事件实现

之前在博问上提问过，没人回答啊，豆太少没人权？

没注册钩子的话根本没办法弹出右键菜单啊，因为在父窗体内有一个容器，所以鼠标在右击时是无法触发窗体的mousedown事件的，即使把KeyPreview设置为true也一样无法触发

wndproc里同样无法截获右键按下的事件

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代码思路：注册鼠标钩子，在钩子的鼠标右击时回调函数里调用事件，事件里判断当前鼠标所在位置窗口的父窗口句柄是否等于当前窗体句柄，是的话把右键菜单控件show出来

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把api中钩子注册与卸载的函数重新在C#中装封一次

using System;
using System.Collections.Generic;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows.Forms;

namespace CSharpmouseHook
{
    ///   <summary>
    ///   这个类可以让你得到一个在运行中程序的所有鼠标事件
    ///   并且引发一个带MouseEventArgs参数的.NET鼠标事件以便你很容易使用这些信息
    ///   </summary>
    public class MouseHook
    {
        //全局的事件
        public event MouseEventHandler OnMouseActivity;//触发时被执行的
        ;   //鼠标钩子句柄
        //鼠标常量
        HookProc MouseHookProcedure;   //声明鼠标钩子事件类型.

        //声明一个Point的封送类型
        [StructLayout(LayoutKind.Sequential)]
        public class POINT
        {
            public int x;
            public int y;
        }

        //声明鼠标钩子的封送结构类型
        [StructLayout(LayoutKind.Sequential)]
        public class MouseHookStruct
        {
            public POINT pt;
            public int hWnd;
            public int wHitTestCode;
            public int dwExtraInfo;
        }

        #region  //……………… 引入api
        //装置钩子的函数
        [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
        public static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId);
        //卸下钩子的函数
        [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
        public static extern bool UnhookWindowsHookEx(int idHook);

        //下一个钩挂的函数
        [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
        public static extern int CallNextHookEx(int idHook, int nCode, Int32 wParam, IntPtr lParam);

        [DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
        static public extern int FormatMessage(
        uint dwFlags,
        IntPtr lpSource,
        int dwMessageId,
        int dwLanguageZId,
        string lpBuffer,
        int nSize,
        IntPtr Arguments);

        #endregion
        public delegate int HookProc(int nCode, Int32 wParam, IntPtr lParam);

        //析构函数.
        ~MouseHook()
        {
            Stop();
        }

        #region//………………注册鼠标钩子
        public void Start()
        {
            //安装鼠标钩子
            )
            {
                //生成一个HookProc的实例.
                MouseHookProcedure = new HookProc(MouseHookProc);//委托，c++中的函数指针
                hMouseHook = SetWindowsHookEx(, MouseHookProcedure, Marshal.GetHINSTANCE(Assembly.GetExecutingAssembly().GetModules()[]), );//14为监控全局鼠标行为

                //如果装置失败停止钩子
                )
                {
                    int errNum = Marshal.GetLastWin32Error();
                    //函数内调用
                    int sLen = 0x100;
                    uint dwFlags = 0x1000 | 0x200;

                    string lpBuffer = new string(' ', sLen);

                    , lpBuffer, sLen, IntPtr.Zero);
                    Stop();
                    throw new Exception("SetWindowsHookEx failed." + lpBuffer);
                }
            }
        }
        #endregion

        #region//………………卸载鼠标钩子
        public void Stop()
        {
            bool retMouse = true;
            )
            {
                retMouse = UnhookWindowsHookEx(hMouseHook);
                hMouseHook = ;
            }

            //如果卸下钩子失败
            if (!(retMouse)) throw new Exception("UnhookWindowsHookEx   failed. ");
        }

        #endregion

        #region//………………鼠标有行为时触发
        /// <summary>
        /// 有鼠标行为时执行回调方法（函数）
        /// </summary>
        /// <param name="nCode"></param>
        /// <param name="wParam"></param>
        /// <param name="lParam"></param>
        /// <returns></returns>
        private int MouseHookProc(int nCode, Int32 wParam, IntPtr lParam)
        {
            //如果正常运行并且用户要监听鼠标的消息
            ) && (OnMouseActivity != null))
            {
                MouseButtons button = MouseButtons.None;
                ;
                if(wParam== 0x204)//右键按下时
                {
                        button = MouseButtons.Right;//转成C#行为
                        clickCount = ;//鼠标单击次数
                        MouseHookStruct MyMouseHookStruct = (MouseHookStruct)Marshal.PtrToStructure(lParam, typeof(MouseHookStruct));//鼠标的信息
                        MouseEventArgs e = );//装封鼠标信息以传入回调函数

                        OnMouseActivity(this, e);
                }
                //从回调函数中得到鼠标的信息
            }
            return CallNextHookEx(hMouseHook, nCode, wParam, lParam);
        }
        #endregion
    }
}

在窗口中注册事件和写事件触发时执行的代码

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

namespace 子父窗体的建成
{
    public partial class Form1 : Form
    {

        [DllImport("user32")]
        public static extern IntPtr WindowFromPoint(Point p);
        [DllImport("user32")]
        public static extern IntPtr GetParent(IntPtr i);

        MouseHook mouseHook;
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            try
            {
                //安装鼠标钩子
                mouseHook = new MouseHook();
                mouseHook.OnMouseActivity += new MouseEventHandler(mouseHook_OnMouseActivity);
                mouseHook.Start();
            }
            catch (System.Exception ex)
            {
                Application.DoEvents();
            }

        }

        //鼠标事件处理程序
        void mouseHook_OnMouseActivity(object sender, MouseEventArgs e)
        {
            if (GetParent(WindowFromPoint(e.Location)) == this.Handle)
            {
                this.contextMenuStrip1.Show(Control.MousePosition);
            }
        }

        //右键菜单触发的事件
        private void 打开ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            MessageBox.Show("窗口右击！！");

        }
    }
}

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示例代码链接：http://pan.baidu.com/s/1i3pp6UL

要转载请注明链接！！！！！！