xinyaping（眼镜哥）及各位大牛看过来 有关P-invoke

[烟波钓]

拿到一个C++的动态链接库
有个方法需要传结构体，但是结构体里面又有函数指针


如下：

struct HL7SDK_INTERFACE
{
	void (* OnConnect) (int iBedNO);		//the TCP connection from one bed has built, data can be received
	
	void (* OnDisconnect)(int iBedNO);		//the TCP connection from one bed has disconnected, abnormal condition happened
	
	void (* OnRecvHL7Msg)(int iBedNO, void * pMsg, int iLen, int iMsgType); //received original HL7 message of one bed(iBedNO), such as 0x0B......0x1C 0x0D
	
	void (* OnSendHL7Msg)(int iBedNO, void *pMsg, int iLen, int iMsgType);  //sent original HL7 message of one bed(iBedNO), such as 0x0B......0x1C 0x0D	
};

方法调用如下：

nt InitHL7SDK(PHL7SDK_INTERFACE pHL7SDKInterace, enum HL7_WORK_MODE enHL7ServerMode, unsigned long ulServerIP, unsigned long ulLocalIP)

我在C#里面处理如下：

SDKStruct SDKIf;
        public int loadSDK(string server, string local, int mode)
        {
            SDKIf = new SDKStruct
                        {
                            onConnect = onConnect,
                            onDisconnect = onDisconnect,
                            onRecvHL7Msg = onRecvHL7Msg,
                            onSendHL7Msg = onSendHL7Msg,
                            onRecvMonitorData = onRecvMonitorData
                        };
            var serverIP = getIpValue(server);
            var localIP = getIpValue(local);
            var ret = CFunction.InitHL7SDK(ref SDKIf, mode, serverIP, localIP);
            return ret;
        }
        public int freeSDK()
        {
            int ret = CFunction.ExitHL7SDK();
            return ret;
        }

        public long getIpValue(string ip)
        {
            var strs = ip.Split('.');
            var ipInt = new uint[4];
            try
            {
                for (var i = 0; i < strs.Length; i++)
                {
                    ipInt[i] = uint.Parse(strs[i]);
                }
                return ((ipInt[0] << 24) | (ipInt[1] << 16) | (ipInt[2] << 8) | ipInt[3]);
            }
            catch (Exception exp)
            {
                return 0;
            }
        }

        public void onConnect(int iBedNo)
        {
            Console.WriteLine("connect: bedNo:" + iBedNo);
        }

        public void onDisconnect(int iBedNo)
        {
            Console.WriteLine("disconnect: bedNo:" + iBedNo);
        }

        public void onRecvHL7Msg(int iBedNo, IntPtr pMsg, int iLen, int iMsgType)
        {
            Console.WriteLine("recvHL7Msg: bedNo:" + iBedNo + ", size:" + iLen + ", type:" + iMsgType);
        }

        public void onSendHL7Msg(int iBedNo, IntPtr pMsg, int iLen, int iMsgType)
        {
            Console.WriteLine("onSendHL7Msg: bedNo:" + iBedNo + ", size:" + iLen + ", type:" + iMsgType);
        }

        public void onRecvMonitorData(int iBedNo, IntPtr pData, int iLen, int iDataType)
        {
            //IntPtr pPonitor = new IntPtr(pData.ToInt64());
            Console.WriteLine("recvData: bedNo:" + iBedNo + ", size:" + iLen + ", type:" + iDataType);

        }
    }


    [StructLayout(LayoutKind.Sequential)]
    struct SDKStruct
    {
        [MarshalAs(UnmanagedType.FunctionPtr)]
        public func_connect onConnect;
        [MarshalAs(UnmanagedType.FunctionPtr)]
        public func_disconnect onDisconnect;
        [MarshalAs(UnmanagedType.FunctionPtr)]
        public func_recvHL7Msg onRecvHL7Msg;
        [MarshalAs(UnmanagedType.FunctionPtr)]
        public func_sendHL7Msg onSendHL7Msg;
        [MarshalAs(UnmanagedType.FunctionPtr)]
        public func_recvMonitorData onRecvMonitorData;

        [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
        public delegate void func_connect(int iBedNo);
        [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
        public delegate void func_disconnect(int iBedNo);
        [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
        public delegate void func_recvHL7Msg(int iBedNo, IntPtr pMsg, int iLen, int iMsgType);
        [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
        public delegate void func_sendHL7Msg(int iBedNo, IntPtr pMsg, int iLen, int iMsgType);
        [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
        public delegate void func_recvMonitorData(int iBedNo, IntPtr pData, int iLen, int iDataType);

    }


    class CFunction
    {
        [DllImport("HL7SDK.dll", EntryPoint = "InitHL7SDK", CallingConvention = CallingConvention.Cdecl)]
        public extern static int InitHL7SDK(ref SDKStruct pHL7SDKInterace, long serverMode, long serverIP, long localIP);
        [DllImport("HL7SDK.dll")]
        public extern static int ExitHL7SDK();
        [DllImport("HL7SDK.dll")]
        public extern static int GetHL7ServerInfo(long serverInfo);
        [DllImport("HL7SDK.dll")]
        public extern static int UpdateCISData(int iBedNo, IntPtr pData, int iLen, int iDataType);
    }

但是方法起来之后，这些穿进去的方法就一直没有执行成功，网上也有这个问题C# Pinvoke with C struct contains function pointer

一直也解决不了 快崩溃了

[gomoku]

一般来说c++的long对应c#的int: public extern static int InitHL7SDK(ref SDKStruct pHL7SDKInterace, int serverMode, int serverIP, int localIP);

[烟波钓]

引用 1 楼 gomoku 的回复:

一般来说c++的long对应c#的int: public extern static int InitHL7SDK(ref SDKStruct pHL7SDKInterace, int serverMode, int serverIP, int localIP);

谢谢 修改完成后，还是没有效果 调用是这样

 Console.WriteLine("serverIP:" + args[0] + ", localIP:" + args[1] + ", mode:" + args[2]);
                var HL7SDK = new HL7SDK_Interface();

                var status = HL7SDK.loadSDK(args[0], args[1], int.Parse(args[2]));
                Console.WriteLine("loadSDK:" + status);
                Console.ReadLine();

是不是会阻塞？ 我先起一个现场试试

[烟波钓]

引用 2 楼 yanbuodiao 的回复:

[quote=引用 1 楼 gomoku 的回复:] 一般来说c++的long对应c#的int: public extern static int InitHL7SDK(ref SDKStruct pHL7SDKInterace, int serverMode, int serverIP, int localIP);

谢谢 修改完成后，还是没有效果 调用是这样

 Console.WriteLine("serverIP:" + args[0] + ", localIP:" + args[1] + ", mode:" + args[2]);
                var HL7SDK = new HL7SDK_Interface();

                var status = HL7SDK.loadSDK(args[0], args[1], int.Parse(args[2]));
                Console.WriteLine("loadSDK:" + status);
                Console.ReadLine();

是不是会阻塞？ 我先起一个线程试试[/quote] 我先起一个线程试试

[烟波钓]

与线程无关，实验过了 纠结了

[oYouDian12]

眼镜哥 ！ 我也在弄宝莱特监护仪 也碰到相同的问题了， 不知道你解决没？ 如果解决麻烦告诉我。 qq 25921877

[高崇进]

大神，我也碰到相同的问题。如果问题解决了可以告诉我吗？ qq632701221