Messages

You may want to use command using API invoke method acedCmd
e.g. open desired block in block editor then perform this code
(it's not mine though)

Code: [Select]

        // Replace "accore.dll" by "acad.exe" for AutoCAD versions prior to 2013
        [System.Security.SuppressUnmanagedCodeSecurity]
        [DllImport("acad.exe", EntryPoint = "acedCmd", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl)]
        extern static private int acedCmd(IntPtr resbuf);
        [CommandMethod("offpl")]

        public void cmdOffset()
        {

            ResultBuffer rb = new ResultBuffer();

            // RTSTR = 5005

            rb.Add(new TypedValue(5005, "_.OFFSET"));

            // start the insert command

            acedCmd(rb.UnmanagedObject);



            bool quit = false;

            // loop round while the insert command is active

            while (!quit)
            {

                // see what commands are active

                string cmdNames = (string)Autodesk.AutoCAD.ApplicationServices.Application.GetSystemVariable("CMDNAMES");

                // if the INSERT command is active

                if (cmdNames.ToUpper().IndexOf("OFFSET") >= 0)
                {

                    // then send a PAUSE to the command line

                    rb = new ResultBuffer();

                    // RTSTR = 5005 - send a user pause to the command line

                    rb.Add(new TypedValue(5005, "\\"));

                    acedCmd(rb.UnmanagedObject);

                }

                else

                    // otherwise quit

                    quit = true;

            }

        }