Get the object created from the command HATCHGENERATEBOUNDARY

[nguyenthanguth]

Hello.

I have a Hatch object and I want to create a Poyline (sometimes Circle) around the Hatch.

I looked through the AutoCAD API docs but couldn't find an implementation of the `HATCHGENERATEBOUNDARY` command in the C# API.

So I did it via Command:

ed.Command("HATCHGENERATEBOUNDARY", hatch.ObjectId, "");

and CommandAsync:

CommandResult commandResult = ed.CommandAsync("HATCHGENERATEBOUNDARY", hatch.ObjectId, "");
commandResult.OnCompleted(() => { });

I want the return result to be the created object. Can someone help me how to do it. Thanks

[ActivistInvestor · Accepted solution]

Just before you call Command(), you can add a handler to the Database's ObjectAppended event to capture newly-created objects, and then remove the handler from the event after Command() returns. Don't use CommandAsync() because it isn't needed (and rarely is).

[ActivistInvestor]

Through a grueling process of copying, pasting and deleting, I was able to lobotomize code that provides a method I've used in place of the Editor's Command() method for a long time, and was able to get a minimal working version of it that automates the process I described above.

Rather than have to resort to the P/Invoke acdbEntLast() hack, this solution gives you all objects created by a command's execution, rather than only the last one.

You can find it here.