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...

Resolved! Write Report

This question has been asked before but I don't think there has been a satisfactory answer.The WriteReport function in the examples is not writing to the Session Report.Is there another location other than the Session Report?I have checked the Write ...

Resolved! Attribute index

I am trying to obtain the attribute index (Font) by typeID and name in the attribute header. ACAPI_Attribute_Search(...)Can't figure out the code to set the name -- my 'C' is not so good.The name can be set either by the attribute name[API_AttrNameLe...

Property Definition Element list

Knowing the definition guid, can one obtain a list of all elements (guidlist) which have that particular property definition assigned to it?I know that I can get a list of all elements for a particular element type, then iterate through the list to o...

Resolved! AddOn functions call back

I believe it is possible to call one plugin from another. Is it possible to call a function within one plugin from another plugin ?if so, any documentation? I am asking out of convenience. If one compiles and loads the Example plugins. One could easi...

Resolved! Problems retrieving 3D objects

Hey everyone,i implemented a KD-Tree structure in an Archicad 21 Addon to sort all the 3D elements in the 3D-model. But im having a little trouble feeding the right information to it:As far as i have seen from the example there are basically two ways...

Resolved! Draw Text

Trying to draw some simple text at the origin. I'm guessing I need to use the function API_Element_Create() but I'm obviously doing something wrong as I get a compile message of 'no suitable conversion function from API_TextType to API_Element'Can't ...

Resolved! ACAPI_WrieReport Format

My add on uses a Alert message via the WriteReport function. I want to format the output message using some embedded variables. but the place holder %s does not seem to work for UniStrings. does work for %f & %d.AS in: GS:: UniString str = 'something...

Resolved! Font Index numbers

Wondering if there is a listing of the available Fonts in Archicad and their index number?

How to filter invisible change markers on 2d view which is open from Drawing from Layout?

The Drawing created from 2d window from 2 floor where no change markers placed.This Drawing placed to Layout.By the command "Open source view" this view opens in a 2d window.There are no visible change markers too.I need to get only visible change ma...

Ray-to-object 3D intersection test method in Archicad?

Hello!Does the Archicad API support detecting ray-to-object collision/intersection detection.Revit has a pure method Document.FindReferencesWithContextByDirection which takes a ray origin, ray direction and the 3D view and returns references which co...

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