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...

An unhandled exception was encountered during a user callbac

HelloI call dll functions from my ac add-on.Archicad crashs end of the code!I get the following error 'Unhandled exception at 0x00007ff8eacc6a20 in ArchiCAD.exe: 0xC000041D: An unhandled exception was encountered during a user callback'and here is my...

How to group items in list view

Hello,I would like to know how i can achieve grouping of list items in my list view. I attached an image to show what I want to achieve.I need to use the code in c++. I know how to make a normal list view: // -----------------------------------------...

Notify Manager - New Attribute?

Can you catch if a user creates a new attribute similar to catching new elements? Like if I create a Layer/Layer Combo, it will have an event I can handle.Thanks,Erenford

[SOLVED] Geometry::Polygon2D to Polygon2DData in AC18?

Hi, I used following code to convert Geometry::Polygon2D to Geometry::Polygon2DData in AC 17. Geometry::Polygon2D polygon2D; Geometry::Polygon2DData polygon2DData; polygon2D.Convert(polygon2DData); This Convert function is removed.Any ideas how to do...

[SOLVED] Cannot open include file: 'stl/_prolog.h'

Hello,it is a long time since last time here. I'm porting our AC Addon to v.18 and I'm getting this compile error:api development kit 18\support\modules\gsroot\STL/algorithm(31): fatal error C1083: Cannot open include file: 'stl/_prolog.h': No such f...

Saving User Data to an element

HI.I have the ACAPI_Element_GetUserData/SetUserData functions working however I am unsure how to save the info so it can be retrieved after the Archicad file has been saved & closed. The user data is lost when Archicad project is opened again

Develop ArchiCad 18 addon with Visual Studio 2013

HiDoes that possible to create AC 18 add-on with Visual Studio 2013.Strange thing is when I install API DevKit, wizard compatible only with Visual Studio 2010.

[SOLVED] Convert char and Int32 to UniString

HiI need to convert char and Int32 to UniString.Please advise.

[SOLVED] Convert API_Guid to GS::UniString or char array

HiI need to send Element guid to web service.Here guid is a struct struct API_Guid { UInt32 time_low; unsigned short time_mid; unsigned short time_hi_and_version; unsigned char clock_seq_hi_and_reserved; unsigned char clock_seq_low; unsigned char nod...

How to create a browser inside of ArchiCad

Hi there I have created an add-on for ArchiCad 18. I want to create a browser inside of ArchiCad like ArchiCad youtube channel or BIM object. My main concern is open browser inside of ArchiCad and get information from page and use it in my code. Is t...

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