Archicad C++ API

New Developer Hub Migration Completed

[UPDATE] Hi all, thank you for your patience. We are happy to announce that the migration of the Developer Hub has been completed. The Developer Forum is officially retired. To get a quick overview of the new Developer Hub, kindly check out this arti...

Using the Development Kit with Visual Studio 2022

Hi everyone, In the last couple of weeks we got several questions regarding Visual Studio 2022 and the API DevKit. If you try to use VS 2022 to build your AddOns, you have to keep in mind a few things. First, Archicad 25 and Archicad 26 is built with...

ChamferPolygon2DDataContour and ChamferPolygon2DDataVertex can not get chamfer polygon

Hello! I get a zone Polygon2DData,when I test the ChamferPolygon2DDataContour and ChamferPolygon2DDataVertex with chamfered the zone polygon,the return err=NoError,But the resulting polygon is always zero count,Has anyone used these functions? Test c...

Resolved! Clarification: APIDevKit latest version for AC 20 (3012 or 3002)?

Greetings, my team noticed a difference on the AC 20 SDK version on the new site (archicadapi.Graphisoft.com) versus the old site (partner.Graphisoft.com).The old one has v20.3012 which we currently use, but the new one has v20.3002 as the latest ver...

ACAPI_CreateElement (Image) crashing outside of dev environment

Hi !I've recently been facing a strange problem I haven't been able to resolve: for some reason, any task related to image-printing (such as using ACAPI_CreateElement for an image) ends up working in my development environment, but completely crashin...

Resolved! Addon folder name in different languages

Hello forum,I have an addon in 8 languages and an installer should do the installation of the addon in the correct folder on destination machine.Is there a list of "addon" folder names in all languages ?I know the name for French (Extensions) and Eng...

Resolved! How to create a ListBox with dragable/movable (drag & drop) item?

I am creating a dialog with list box. The items should me dragable/movable to any row. I am using ListBoxObserver but I am unable to do it.

API Windows AC 21 cannot open file if filepath length > 130 chars

Before AC 21 this string was work correctly.ifstream in(fname, ios::in | ios::binary); But on AC 21 do not work if fname length more 130 chars.How do I increase this limit to the normal 260 for Windows?

Modifying IFC Properties

Hello,I would like to know if its possible to modify IFC properties of an element. For example fire rating and acoustic rating? If its possible could someone provide a simple example? Thanks in advance, Julian

Allow palette-using add-on to use FreeData

Hi!I am currently implementing a palette inside my add-on, and have run into a new problem.My Add-on now has a palette that can be opened / closed. So far, so good.The problem is, during development, I cannot apply changes to the add-on and rebuild i...

Get parameters of the GLOBALL GDL object.

Hello, do not tell me how to get the parameters of the global GDL object.Or how to get it GUID and INDEX (further with parameters I think I will understand as with usual GDL)This object is created and loaded in the library it is present in the view p...

Resolved! Document name

Hello forum Does someone know how i can get the name of the current open document in Archicad ?I mean the name of the open file.Thanks a lot.

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