topic Re: Dynamic Block Creation using ARX .NET in ObjectARX Forum

Dynamic Block Creation using ARX .NET

johnlwilliamsjr2013 — Thu, 04 Feb 2021 00:35:28 GMT

Is it possible to create Dynamic Blocks using ARX .NET code or can this only be done using the Block Editor? I would like to create a simple programmable rectangle using .NET code for starts. I can do this with the Block Editor but would like to build complex blocks with code.

Thanks,

John W.

Re: Dynamic Block Creation using ARX .NET

tbrammer — Thu, 11 Feb 2021 15:31:08 GMT

First: This forum is for unmanaged ObjectARX. .NET questions should be posted to the .NET forum.

I think it is possible to create dynamic blocks programmatically - although I haven't done this yet.

I would recomment to use the ArxDbg.arx tool from <ARX>\samples\database\ARXDBG to analyze some dynamic blocks to find out which database objects are involved.

Re: Dynamic Block Creation using ARX .NET

Alexander.Rivilis — Thu, 11 Feb 2021 18:35:09 GMT

@tbrammer wrote:

...I think it is possible to create dynamic blocks programmatically - although I haven't done this yet...

No. It is impossible to create dynamic blocks with help of public ObjectARX SDK and with others API also. It is only possible to create AcDbBlockReference using manually created AcDbBlockTableRecord. Also you can copy with API AcDbBlockTableRecord from other dwg-file.

Re: Dynamic Block Creation using ARX .NET

tbrammer — Fri, 12 Feb 2021 11:28:15 GMT

@Alexander.Rivilis wrote:

@tbrammer wrote:

...I think it is possible to create dynamic blocks programmatically - although I haven't done this yet...

No. It is impossible to create dynamic blocks with help of public ObjectARX SDK and with others API also. (...)

Are you sure? I analyzed a dynamic block with ArxDbg and found this:

It looks to me as if the required APIs are exposed. What is missing?

(I still didn't really try to create a dynamic block from scratch)

Re: Dynamic Block Creation using ARX .NET

Alexander.Rivilis — Fri, 12 Feb 2021 13:19:25 GMT

Try to find those classes within ObjectARX SDK. 😉 In order to create dynamic block you need description of such classes. It is for simplest dynamic block (attached).

Re: Dynamic Block Creation using ARX .NET

tbrammer — Fri, 12 Feb 2021 14:53:16 GMT

*Sigh* - you're right, Alexander.

I didn't notice all the references under ACAD_ENHANCEDBLOCK.

They are also in my sample DWG.

Re: Dynamic Block Creation using ARX .NET

Alexander.Rivilis — Fri, 12 Feb 2021 16:08:52 GMT

Just in case, we can ask to clarify the answer to this question from @artc2 and @moogalm

But I am at 99.9% sure that there is no public API to create dynamic blocks.

Re: Dynamic Block Creation using ARX .NET

moogalm — Fri, 12 Feb 2021 18:18:10 GMT

Hi ,

Yes .. there is very limited API wrt to creation of Dynamic Blocks ..

Re: Dynamic Block Creation using ARX .NET

johnlwilliamsjr2013 — Fri, 12 Feb 2021 20:36:28 GMT

Thanks for the feedback. I will continue to investigate. I feel that this capability is very important.

John W.

Re: Dynamic Block Creation using ARX .NET

johnlwilliamsjr2013 — Mon, 08 Mar 2021 15:18:23 GMT

I am able to create the complex parameterized objects in code and add all of the distinct shapes into a single group object. I created the code as a Lisp Function call, which allows me to pass in whatever parameters I need to, omitting the parameters I don't need for that particular object.
I am currently working on a form that allows the user to enter the object parameter information which will then call the code to create the object.
After that, I will create the form that allows the user to change instance parameters of the selected object.

Fun stuff!

Re: Dynamic Block Creation using ARX .NET

Anonymous — Fri, 30 Jul 2021 08:29:04 GMT

Can I have a dome？