cad.net 跨进程通讯

Acad跨进程通讯

在Acad跨进程通讯用途其实很广泛.

1,COM接口交互
https://www.cnblogs.com/JJBox/p/11381254.html

adn博客里面说COM要STA线程

2,Win32API的SendMessage其实也是,
毕竟ctrl+n新建图纸也是发送QNEW指令,然后消息循环捕获再执行指令.
https://www.cnblogs.com/JJBox/p/13766772.html

3,那么TCP/UDP/C#的Remoting框架/网络通讯等等.

Remoting

正在研究cad的跨进程通讯,
难点在于cad是服务端的话,让客户端直接调用暴露的接口,而不会暴露实现,
因此写了一个Remoting的案例,如下代码就可以进行了.

至于WCF工程,由于它的App.config处理有些地方不是很理解,之后再仔细研究.

动图演示

工程结构

1. 服务端工程 --> cad的类库,透过cad调用 --> 引用端口工程
2. 客户端工程 --> 控制台工程 --> 引用端口工程
3. 端口工程 --> 类库

1.服务端工程

#if !HC2020
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Acap = Autodesk.AutoCAD.ApplicationServices.Application;
#else
using GrxCAD.ApplicationServices;
using GrxCAD.DatabaseServices;
using GrxCAD.EditorInput;
using Acap = GrxCAD.ApplicationServices.Application;
#endif
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Tcp;
using System;
using JoinBox.IAdapter;

namespace JoinBox.Service
{
    public class Remoting
    {
        /// <summary>
        /// 注册服务管道 Remoting,实现占用端口
        /// </summary>
        [JoinBoxInitialize]
        public void RegisterServerChannel()
        {
            var channel = new TcpServerChannel(AdapterHelper.Port);
            ChannelServices.RegisterChannel(channel, false);
            RemotingConfiguration.RegisterWellKnownServiceType(
                typeof(BaseService),            //服务端实现(通讯地址接口)的函数
                AdapterHelper.TcpPortAdapter,   //通讯地址接口
                WellKnownObjectMode.Singleton);
        }
    }

    // 服务端实现接口工程的方法,在cad命令栏打印
    public class BaseService : MarshalByRefObject, IJoinBoxAdapter
    {
        public void PostAcedString(string str)
        {
            //阻塞线程并切换上下文,另见 https://www.cnblogs.com/JJBox/p/14179921.html
            AutoGo.SyncManager.SyncContext.Post(() => {
                Document doc = Acap.DocumentManager.MdiActiveDocument;
                Database db = doc.Database;
                Editor ed = doc.Editor;
                ed.WriteMessage(str);
            });
        }
    }
}

2.客户端工程 JoinBox.Client

using System;
using System.Threading;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Tcp;
using JoinBox.IAdapter;

namespace JoinBox.Client
{
    public class Program
    {
        public static void Main(string[] args)
        {
            ChannelServices.RegisterChannel(new TcpClientChannel(), false);
            var adapter = (IJoinBoxAdapter)Activator.GetObject(typeof(IJoinBoxAdapter), AdapterHelper.TcpPortFullName);
            while (true)
            {
                var str = DateTime.Now.ToString() + "\n";
                Console.WriteLine(str);
                adapter.PostAcedString(str);//调用接口工程的方法.
                Thread.Sleep(1000);
            }
        }
    }
}

3.接口工程 JoinBox.IAdapter

此工程同时暴露给服务端和客户端利用

namespace JoinBox.IAdapter
{
    //公共接口和方法
    public interface IJoinBoxAdapter
    {
        public void PostAcedString(string str);
    }

    //公共的属性
    public class AdapterHelper
    {
        /// <summary>
        /// 端口
        /// </summary>
        public static int Port               = 15341;
        /// <summary>
        /// 通讯地址(接口)--服务端用
        /// </summary>
        public static string TcpPortAdapter  = "jingjing/" + nameof(IJoinBoxAdapter);
        /// <summary>
        /// 通讯地址(完整)--客户端用
        /// </summary>
        public static string TcpPortFullName = $"tcp://localhost:{Port}/" + TcpPortAdapter;
    }
}

(完)