網(wǎng)上有些進(jìn)程外的一些資料，但有些簡(jiǎn)單，研究了兩天寫(xiě)了demo，可利用這種方式解決64位的程序調用32位的dll等問(wèn)題，但注意方法參數不能含有IntPtr，因為指針跨進(jìn)程是無(wú)效的，每個(gè)進(jìn)程都有自己的內存區域

 一.編寫(xiě)外部Com服務(wù)exe

    1.首先新建一個(gè)winform的應用程序，并設置com程序集可見(jiàn)

2.編寫(xiě)com類(lèi) 

    編寫(xiě)com接口，guid可利用vs的工具生成，代碼設置com接口的可視，實(shí)現接口后，編寫(xiě)com工廠(chǎng)啟用com

internal static class ComHelperClass
    {
        public const string s_IID_ITestComVisible = "C66C0654-49AE-4f2e-8EDA-BD01C8259C20";
        public const string s_CLSID_TestComVisibleClass = "12D783BB-33BF-4973-B38B-2A8F0BA926E4";
        public static readonly Guid IID_ITestComVisible = new Guid(s_IID_ITestComVisible);
        public static readonly Guid CLSID_TestComVisibleClass = new Guid(s_CLSID_TestComVisibleClass);

        public const string s_IID_IClassFactory = "00000001-0000-0000-C000-000000000046";
        public static readonly Guid IID_IClassFactory = new Guid("00000001-0000-0000-C000-000000000046");
        public static readonly Guid IID_IUnknown = new Guid("00000000-0000-0000-C000-000000000046");

        [DllImport("ole32.dll")]
        public static extern int CoRegisterClassObject(
            [MarshalAs(UnmanagedType.LPStruct)] Guid rclsid,
            [MarshalAs(UnmanagedType.IUnknown)] object pUnk,
            uint dwClsContext,
            uint flags,
            out uint lpdwRegister);

        [DllImport("ole32.dll")]
        public static extern int CoRevokeClassObject(uint dwRegister);

        [DllImport("ole32.dll")]
        public static extern int CoInitializeSecurity(
         IntPtr securityDescriptor,
         Int32 cAuth,
         IntPtr asAuthSvc,
         IntPtr reserved,
         UInt32 AuthLevel,
         UInt32 ImpLevel,
         IntPtr pAuthList,
         UInt32 Capabilities,
         IntPtr reserved3);

        public const int RPC_C_AUTHN_LEVEL_PKT_PRIVACY = 6; // Encrypted DCOM communication
        public const int RPC_C_IMP_LEVEL_IDENTIFY = 2; // No impersonation really required
        public const int CLSCTX_LOCAL_SERVER = 4;
        public const int REGCLS_MULTIPLEUSE = 1;
        public const int EOAC_DISABLE_AAA = 0x1000; // Disable Activate-as-activator
        public const int EOAC_NO_CUSTOM_MARSHAL = 0x2000; // Disable custom marshalling
        public const int EOAC_SECURE_REFS = 0x2;   // Enable secure DCOM references
        public const int CLASS_E_NOAGGREGATION = unchecked((int)0x80040110);
        public const int E_NOINTERFACE = unchecked((int)0x80004002);
 }

    [ComVisible(true)]
    [Guid(ComHelperClass.s_IID_ITestComVisible)]
    public interface ITestComVisible
    {
        [DispId(1)]
        string TestProperty { get; set; }

        [DispId(2)]

        void TestMethod();

      //可擴展相應的方法接口，并在TestComVisibleClass 實(shí)現

    }
    [ComVisible(true)]
    [Guid(ComHelperClass.s_CLSID_TestComVisibleClass)]
    public class TestComVisibleClass : ITestComVisible
    {
        public string TestProperty { get; set; }

        public void TestMethod()
        {
            MessageBox.Show("我是32");
        }
    }
    // 類(lèi)廠(chǎng)
    [
     ComImport,
     InterfaceType(ComInterfaceType.InterfaceIsIUnknown),
     Guid(ComHelperClass.s_IID_IClassFactory)
    ]
    internal interface IClassFactory
    {
        [PreserveSig]
        int CreateInstance(IntPtr pUnkOuter, ref Guid riid, out IntPtr ppvObject);
        [PreserveSig]
        int LockServer(bool fLock);
    }
    internal class ComClassFactory : IClassFactory
    {
        #region IClassFactory Members

        public int CreateInstance(IntPtr pUnkOuter, ref Guid riid, out IntPtr ppvObject)
        {
            ppvObject = IntPtr.Zero;
            if (pUnkOuter != IntPtr.Zero)
                Marshal.ThrowExceptionForHR(ComHelperClass.CLASS_E_NOAGGREGATION);
            if (riid == ComHelperClass.IID_ITestComVisible ||
                 riid == ComHelperClass.IID_IUnknown)
            {
                ppvObject = Marshal.GetComInterfaceForObject(
                    new TestComVisibleClass(), typeof(ITestComVisible));
            }
            else
                Marshal.ThrowExceptionForHR(ComHelperClass.E_NOINTERFACE);
            return 0; // S_OK
        }
        public int LockServer(bool fLock)
        {
            return 0; // S_OK
        }
        #endregion
    }

3.編寫(xiě)代碼啟動(dòng)com工廠(chǎng)，調用；并編譯生成程序

  static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            RegisterDcomServer();
            Application.ApplicationExit += new EventHandler(Application_ApplicationExit);
            Application.Run(new Form1());
        }


        static void Application_ApplicationExit(object sender, EventArgs e)
        {
            RevokeDcomServer();
        }


        private static void RegisterDcomServer()
        {
            // 做一些安全檢查，確保只有一些有權限的人才能調用你的C# Dcom組件
            // 如果你對安全性不關(guān)心的話(huà)，可以刪除下面的語(yǔ)句
            //int hr = ComHelperClass.CoInitializeSecurity(
            //    IntPtr.Zero, // 這里要輸入你的安全描述符
            //    -1,
            //    IntPtr.Zero,
            //    IntPtr.Zero,
            //    ComHelperClass.RPC_C_AUTHN_LEVEL_PKT_PRIVACY,
            //    ComHelperClass.RPC_C_IMP_LEVEL_IDENTIFY,
            //    IntPtr.Zero,
            //    ComHelperClass.EOAC_DISABLE_AAA | ComHelperClass.EOAC_SECURE_REFS | ComHelperClass.EOAC_NO_CUSTOM_MARSHAL,
            //    IntPtr.Zero);
            //if (hr != 0)
            //    Marshal.ThrowExceptionForHR(hr);


            int hr = ComHelperClass.CoRegisterClassObject(
                ComHelperClass.CLSID_TestComVisibleClass,
                new ComClassFactory(),
                ComHelperClass.CLSCTX_LOCAL_SERVER,
                ComHelperClass.REGCLS_MULTIPLEUSE,
                out m_ComCookie);
            if (hr != 0)
                Marshal.ThrowExceptionForHR(hr);
        }


        private static void RevokeDcomServer()
        {
            if (m_ComCookie != 0)
                ComHelperClass.CoRevokeClassObject(m_ComCookie);

        }

     4.在本機注冊com服務(wù)程序（管理身份運行 regasm）生成tlb文件，并修改添加注冊表為本地服務(wù)（LocalServer32），刪除自動(dòng)生成的服務(wù)（inprocServer32）

查看系統注冊表（建議使用RegWorkshop查看，檢索guid ）

vs使用的話(huà)到此就可以了，但如果c++調用的話(huà)還要在注冊表里聲明下tlb的信息

tlb信息可以用oleview進(jìn)行查看，并在注冊表添加信息

二、外部對com服務(wù)進(jìn)行調用

    新建一個(gè)winform程序 ，編寫(xiě)調用代碼，即可

  System.Type t = Type.GetTypeFromProgID("TestComServer.TestComVisibleClass");
            dynamic o = Activator.CreateInstance(t);

            o.TestMethod();

 至此我們的進(jìn)程外com服務(wù)的編寫(xiě)和測試程序全部完成

完成的程序Demo 

注意下載Demo后，要現在本地進(jìn)行com注冊和相應注冊表修改，如果感覺(jué)注冊表操作麻煩，可以自己寫(xiě)個(gè)腳本

參考資料：

http://blog.csdn.net/zxdu721/article/details/7785277

https://www.cnblogs.com/killmyday/articles/1395432.html

https://www.codeproject.com/KB/COM/simplecomserver.aspx?display=Print