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进程间通讯：消息（.net app 与 mfc dll）
 
http://www.cppblog.com/erran/archive/2012/05/19/175360.html

 C#消息处理函数引用 
  /// <summary> 
/// <para> 版 权 : Copyright (c) 20010-2011 </para>
/// <para> 项 目 : xxxxx/RD/xxxx </para> 
/// <para> 文件名称 : </para>
/// <para> 创 建 人 : lizhi </para>
/// <para> 创建日期 : 2010-11-22 </para>
/// <remarks> 备 注 : 
///     ddgooo@sina.com
/// </remarks>
/// </summary>
///  
     public class Win32Message
    {
        /// <summary>
        /// 消息
        /// </summary>
        public const int WM_COPYDATA = 0x004A;

        /// <summary>
        /// WM_COPYDATA消息结构体
        /// </summary>
        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
        public struct COPYDATASTRUCT
        {
            /// <summary>
            /// 用户定义数据
            /// </summary>
            public IntPtr   dwData;
            /// <summary>
            /// 数据大小
            /// </summary>
            public int      cbData;
            /// <summary>
            /// 指向数据的指针
            /// </summary>            
            public IntPtr lpData;
        }

        /// <summary>
        /// 注册消息用
        /// 在win7中，如果以管理员方式运行，需要加入该语句，注册WM_COPYDATA消息，避免过滤掉该消息。
        /// </summary>
        /// <param name="msg"></param>
        /// <param name="flags"></param>
        /// <returns></returns>
        [DllImport("user32")]
        public static extern bool ChangeWindowMessageFilter(int msg, int flags);
        

        /// <summary>
        /// 发送WM_COPYDATA消息
        /// </summary>
        /// <param name="hWnd"></param>
        /// <param name="msg"></param>
        /// <param name="wParam"></param>
        /// <param name="lParam"></param>
        /// <returns></returns>
        [DllImport("User32.dll", EntryPoint = "SendMessage")]
        public static extern int SendMessage(int hWnd, int msg, IntPtr wParam, IntPtr lParam);
        /// <summary>
        /// 发送WM_COPYDATA消息
        /// </summary>
        /// <param name="hWnd"></param>
        /// <param name="msg"></param>
        /// <param name="wParam"></param>
        /// <param name="lParam"></param>
        /// <returns></returns>
        [DllImport("user32")]
        public static extern bool PostMessage(int hWnd, int msg, IntPtr wParam, IntPtr lParam); 
                        
        /// <summary>
        /// 查找句柄
        /// </summary>
        /// <param name="lpClassName"></param>
        /// <param name="lpWindowName"></param>
        /// <returns></returns>
        [DllImport("User32.dll", EntryPoint = "FindWindow")]
        public static extern IntPtr FindWindow(string lpClassName,string lpWindowName);

        /// <summary>
        /// 查找句柄
        /// </summary>
        /// <param name="hwndParent"></param>
        /// <param name="hwndChildAfter"></param>
        /// <param name="lpszClass"></param>
        /// <param name="lpszWindow"></param>
        /// <returns></returns>
        [DllImport("user32.dll", EntryPoint = "FindWindowEx")]
        public static extern IntPtr FindWindowEx(IntPtr hwndParent,IntPtr hwndChildAfter, string lpszClass, string lpszWindow);

    }
C# 消息解析函数

/// <summary> 
/// <para> 版 权 : Copyright (c) 20010-2011 </para>
/// <para> 项 目 : xxxxx/RD/xxxx </para> 
/// <para> 文件名称 : </para>
/// <para> 创 建 人 : lizhi </para>
/// <para> 创建日期 : 2010-11-22 </para>
/// <remarks> 备 注 : 
///     ddgooo@sina.com
/// </remarks>
/// </summary>
///  
    /// <summary>
    /// 脚本测试类
    /// </summary> 
    public class TestingMessage
    {   
        /// <summary>
        /// 消息 开始
        /// </summary>
        public const int WM_USER_START = 0x04DD;
        /// <summary>
        /// 消息 继续
        /// </summary>
        public const int WM_USER_CONTINUE = 0x05F8;
        /// <summary>
        /// 消息 停止
        /// </summary>
        public const int WM_USER_ABORT = 0x06F9;

        /// <summary>
        /// 最后的消息数据
        /// </summary>
        public string testingScript = null;

        /// <summary>
        /// 初始化
        /// </summary>
        public bool tetsingEnable = false;

        /// <summary>
        /// 初始化
        /// </summary>
        /// <returns></returns>
        public bool Initiate()
        {    
            Win32Message.ChangeWindowMessageFilter(Win32Message.WM_COPYDATA, 1);

            tetsingEnable = true;

            return true;
        }

        /// <summary>
        /// 解析消息
        /// </summary>
        /// <param name="msg"></param>
        /// <returns></returns>
        public bool DoMessage(ref System.Windows.Forms.Message msg)
        {
            bool tested = false;

            switch (msg.Msg)
            {
                case Win32Message.WM_COPYDATA :
                    DoMsgCopyData(ref msg);
                    tested = true;
                    break;

                case WM_USER_START :
                    DoMsgStart(ref msg);
                    tested = true;
                    break;

                case WM_USER_CONTINUE :
                    DoMsgContinue(ref msg);
                    tested = true;
                    break;

                case WM_USER_ABORT :
                    DoMsgAbort(ref msg);
                    tested = true;
                    break;

                default :
                    break;
            }

            return tested;
        }
        
        /// <summary>
        /// 处理拷贝数据
        /// </summary>
        /// <param name="msg"></param>
        /// <returns></returns>
        public bool DoMsgCopyData(ref System.Windows.Forms.Message msg)
        {
            bool tested = false;

            if (tetsingEnable)
            {
                try
                {
                    Win32Message.COPYDATASTRUCT mystr = new Win32Message.COPYDATASTRUCT();
                    Type mytype = mystr.GetType();
                    mystr = (Win32Message.COPYDATASTRUCT)msg.GetLParam(mytype);
                    Byte[] scriptbytes = new Byte[mystr.cbData];
                    Marshal.Copy(mystr.lpData, scriptbytes, 0, mystr.cbData);
                    System.Text.Encoding utf8 = System.Text.Encoding.UTF8;
                    testingScript = utf8.GetString(scriptbytes);

                    System.Windows.Forms.MessageBox.Show(testingScript);

                    tested = true;
                }
                catch
                {
                    tested = false;
                }
            }

            return tested;
        }


        /// <summary>
        /// 开始
        /// </summary>
        /// <param name="msg"></param>
        /// <returns></returns>
        public bool DoMsgStart(ref System.Windows.Forms.Message msg)
        {
            bool tested = false;

            if (tetsingEnable)
            {
                try
                {
                    if (testingScript != null)
                    {
                        tested = XXXX.Parser.TestingParser.Instance.TestRunning(testingScript);

                        System.Windows.Forms.MessageBox.Show("SERVER DoMsgStart");
                    }
                }
                catch
                {
                    tested = false;
                }
            }

            return tested;
        }

        
        /// <summary>
        /// 继续
        /// </summary>
        /// <param name="msg"></param>
        /// <returns></returns>
        public bool DoMsgContinue(ref System.Windows.Forms.Message msg)
        {
            bool tested = false;

            if (tetsingEnable)
            {
                try
                {
                    if (testingScript != null)
                    {
                        tested =  XXXX .Parser.TestingParser.Instance.TestContinue();

                        System.Windows.Forms.MessageBox.Show("SERVER DoMsgContinue");
                    }
                }
                catch
                {
                    tested = false;
                }
            }

            return tested;
        }


        /// <summary>
        /// 继续
        /// </summary>
        /// <param name="msg"></param>
        /// <returns></returns>
        public bool DoMsgAbort(ref System.Windows.Forms.Message msg)
        {
            bool tested = false;

            if (tetsingEnable)
            {
                try
                {
                    if (testingScript != null)
                    {
                        tested =  XXXX .Parser.TestingParser.Instance.TestAbort();
                        testingScript = null;

                        System.Windows.Forms.MessageBox.Show("SERVER DoMsgAbort");
                    }
                }
                catch
                {
                    tested = false;
                }
            }

            return tested;
        }

    }
C# 窗体
/// <summary> 
/// <para> 版 权 : Copyright (c) 20010-2011 </para>
/// <para> 项 目 : xxxxx/RD/xxxx </para> 
/// <para> 文件名称 : </para>
/// <para> 创 建 人 : lizhi </para>
/// <para> 创建日期 : 2010-11-22 </para>
/// <remarks> 备 注 : 
///     ddgooo@sina.com
/// </remarks>
/// </summary>
///  
   public partial class FormMain : Form
    {

        /// <summary>
        /// 消息解析
        /// </summary>
        private TestingMessage testingMessage = null;

        /// <summary>
        /// 构造
        /// </summary>
        public FormMain()
        {
            testingMessage = new TestingMessage();

            InitializeComponent();
        }

        /// <summary>
        /// 加载
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void FormMain_Load(object sender, EventArgs e)
        {
            testingMessage.Initiate();
        }

        /// <summary>
        /// 关闭
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void FormMain_FormClosed(object sender, FormClosedEventArgs e)
        {
            System.Windows.Forms.Message msg = new Message();
            testingMessage.DoMsgAbort(ref msg);
            testingMessage = null;
        }

        /// <summary>
        /// 消息处理函数
        /// </summary>
        /// <param name="m"></param>
        protected override void DefWndProc(ref System.Windows.Forms.Message msg)
        {
            if (!testingMessage.DoMessage(ref msg))
            {
                base.DefWndProc(ref msg);
            }
        }

    }

MFC DLL 消息发送端

CTestingMessage::CTestingMessage(void)
{
    initializeSuccessed = false;

    processAppHandle = NULL;

    processAppName = _T("\\\\XXXX\\XXXX.XXXXX.XXXX.exe");
    processWindowName = _T("XXXXXXXX");    
}

CTestingMessage::~CTestingMessage(void)
{
}


CTestingMessage* CTestingMessage::Instance()
{
    static CTestingMessage* ins = NULL;
    if (ins == NULL)
    {
        ins = new CTestingMessage();
    }
    return ins;
}

bool CTestingMessage::InitTesting(void)
{
    bool bFlag = false;

    processMutex.Lock();

    try
    {
        ::ChangeWindowMessageFilter(WM_COPYDATA, 1);
        /*
        TCHAR exepath[MAX_PATH];
        memset(exepath, 0, MAX_PATH);
        GetModuleFileName(NULL, exepath, MAX_PATH);    

        CString strdir = exepath;
        strdir = strdir.Left(strdir.ReverseFind('\\'));
        
        CString szAppName = strdir;
        szAppName += processAppName;

        MessageBox(NULL, szAppName, _T(""), 0);

        PROCESS_INFORMATION pi;    
                    
        bFlag = ::CreateProcess(szAppName, 
            NULL, NULL, NULL, FALSE, CREATE_NEW_CONSOLE, NULL, NULL, NULL, &pi);

        if (bFlag)
        {
            processAppHandle = pi.hProcess;
        } */
        bFlag = true;
    }
    catch(CException* e)
    {
        bFlag = false;    
        processAppHandle = NULL;
    }
    
    initializeSuccessed = bFlag;

    processMutex.Unlock();

    return bFlag;
}


bool CTestingMessage::ExitTesting(void)
{
    bool bFlag = false;

    processMutex.Lock();

    initializeSuccessed = false;

    if (processAppHandle != NULL)
    {
        ::TerminateProcess(processAppHandle, 0);
         CloseHandle(processAppHandle);
        processAppHandle = NULL;        
    }

    bFlag = true;    

    processMutex.Unlock();

    return bFlag;
}


bool CTestingMessage::StartTesting(LPCSTR pScript)
{
    bool bFlag = false;

    processMutex.Lock();    

    if (initializeSuccessed)
    {
        HWND hWnd = ::FindWindow(NULL, processWindowName);
        if (hWnd != NULL)
        {
            // 发送数据
            COPYDATASTRUCT cd;
            cd.cbData = strlen(pScript);
            cd.dwData = WM_COPYDATA;
            cd.lpData = (void*)pScript;
            ::SendMessage(hWnd, WM_COPYDATA, 0, (LPARAM)(&cd));

            // 发送命令
            ::SendMessage(hWnd, WM_USER_START, 0, 0);
            
            bFlag = true;
        }
    }

    processMutex.Unlock();

    return bFlag;
}

bool CTestingMessage::AbortTesting()
{
    bool bFlag = false;

    processMutex.Lock();
    
    if (initializeSuccessed)
    {
        HWND hWnd = ::FindWindow(NULL, processWindowName);
        if (hWnd != NULL)
        {            
            ::SendMessage(hWnd, WM_USER_ABORT, 0, 0);
            
            bFlag = true;
        }
    }

    processMutex.Unlock();

    return bFlag;    
}

void CTestingMessage::ContinueTesting()
{
    bool bFlag = false;

    processMutex.Lock();

    if (initializeSuccessed)
    {
        HWND hWnd = ::FindWindow(NULL, processWindowName);
        if (hWnd != NULL)
        {            
            ::SendMessage(hWnd, WM_USER_CONTINUE, 0, 0);
            
            bFlag = true;
        }
    }

    processMutex.Unlock();
}


posted on 2012-05-19 09:27 erran 阅读(873) 评论(0)  编辑 收藏 引用 所属分类: dotNet

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