topic Re: Send synchronization command by p/invoke with acedCmd in .NET Forum

Send synchronization command by p/invoke with acedCmd

Anonymous — Mon, 12 Feb 2018 06:33:04 GMT

I wan't send a synchronization command by p/invoke with acedCmd in autocad map 2015

my code like this

[System.Security.SuppressUnmanagedCodeSecurity]
        [DllImport("accore.dll", EntryPoint = "acedCmd", CallingConvention = CallingConvention.Cdecl)]
        private static extern int acedCmd(IntPtr vlist);

        /// <summary>
       
        /// </summary>
        /// <param name="endCommandByUser">end command type</param>
        /// <param name="ldnode">params</param>
        public static void MyCommand(bool endCommandByUser, ResultBuffer rb)
        {
            ResultBuffer rbend = new ResultBuffer();
            try
            {
                Document doc = Application.DocumentManager.MdiActiveDocument;
                string currCmdName = doc.CommandInProgress;
                int result = acedCmd(rb.UnmanagedObject);
                if (endCommandByUser)
                {
                    rbend.Add(new TypedValue((int)LispDataType.Text, "\\"));
                }
                while (doc.CommandInProgress != currCmdName)
                {
                    acedCmd(rbend.UnmanagedObject);
                }
            }
            catch { }
            finally
            {
                rb.Dispose();
                rbend.Dispose();
            }
        }
    
        [CommandMethod("MyZoomE")]
        public void myzoome()
        {
           

            ResultBuffer rb = new ResultBuffer();
           
            int A = (int)LispDataType.Text;//A=5005
            rb.Add(new TypedValue((int)LispDataType.Text, "zoom"));
            rb.Add(new TypedValue(5005, "E"));
            rb.Add(new TypedValue(5005, ""));
            
            MyCommand(false, rb);

        }

when i send the "MyZoomE" command ,I get the return result is "-5001"

what's wrong?

Re: Send synchronization command by p/invoke with acedCmd

_gile — Mon, 12 Feb 2018 06:49:56 GMT

Hi,

You do not need to P/Invoke acedCmd, until AutoCAD 2015 there's a new Editor.Command() method which works synchronously.

        [CommandMethod("MyZoomE")]
        public void myzoome()
        {
            var ed = Application.DocumentManager.MdiActiveDocument.Editor;
            ed.Command("_.zoom", "_extents");
        }

You can also have a look at a little comparison between Command and CommandAsync.

Re: Send synchronization command by p/invoke with acedCmd

Anonymous — Mon, 12 Feb 2018 07:04:24 GMT

thank you ！

i find that the ed.command can't be used in CommandFlags.Session!

In comandFlags.Session,how to send synchronization command?

Re: Send synchronization command by p/invoke with acedCmd

_gile — Mon, 12 Feb 2018 07:16:08 GMT

As far as know, there is no way to execute commands synchronously from the application context.

You can find some helper to switch context provided by @ActivistInvestor in this post..

Re: Send synchronization command by p/invoke with acedCmd

ambrosl — Mon, 12 Feb 2018 20:02:32 GMT

You could try the Editor.CommandAsync or Document.SendStringToExecute methods. Make sure to use the await keyword with Editor.CommandAsync.

Re: Send synchronization command by p/invoke with acedCmd

ActivistInvestor — Mon, 12 Feb 2018 20:55:19 GMT

@Anonymous wrote:
thank you ！
i find that the ed.command can't be used in CommandFlags.Session!
In comandFlags.Session,how to send synchronization command?

As @_gile mentioned, there's no way to execute commands synchronously from the application context (e.g, CommandFlags.Session).

There are a few ways around that, including Autodesk's own ExecuteInCommandContextAsync(), which is one way of doing what the code included in this post does.

Re: Send synchronization command by p/invoke with acedCmd

_gile — Tue, 13 Feb 2018 06:49:38 GMT

@ambrosl wrote:

You could try the Editor.CommandAsync or Document.SendStringToExecute methods. Make sure to use the await keyword with Editor.CommandAsync.

The OP requirement is to synchronously run a command in application context (CommandFlags.Session).

Document.SendStringToExecute runs asynchronously.

Editor.CommandAsync as EditorCommand only works in document context.