How to create a parametric 3D object in ArchiCAD

[clauds1223]

I have this little window awning that I want to be able to change with the width of the windows. Is there a way to do this parametrically so I don't have change it everytime I change the window size?

Thanks, 

Claudia 

Operating system used: Windows 11

[Barry Kelly]

You either need to learn GDL scripting and script it your self - not a small task but quite easy when you know what you are doing.

Or you can try with AI as others have mentioned in posts here.

I have not dabbled with AI recently but people seem to be getting results.

I am sure AI can create a stand alone object as Ahmed_k has shown, but I am not sure about it being linked to your window objects.

That would require extracting libraries and adding as a macro.

Then if ever the library gets updated you have to do it all over again.

I have my own objects and don't use the Graphisoft ones, so there is not issue with updates for me.

I would explore the casing options in the windows as Ling has mentioned.

Barry.

[Ahmed_K]

The object i shared can be linked as a macro, and it inherits the size of the window, 

As Barry said, after each library migration, you should update the library and relink all your macros, 

[Hmooslechner]

Maybe so?

https://www.youtube.com/watch?v=mlZu_KaVjlY
You need the Archicad-Goodie-Addon for walls..

AC29EduAut: actual 24.4.2026 - 16:44

https://www.dropbox.com/scl/fi/cw9fqqypi19v9qcwdjoa3/Fensterumrandungen-einzeln-und-Zusammen.pln?rlk...

[Patrick M]

I think from your screen shots, you don't need a separate object. You can just set your exterior trim to 1"x1' or something like that. @Lingwisyer is on the right track, from what I can tell...
If it does need to be a separate element, as far as I know, there is no default 3d object that will associate with the window. Labels are associative, but only 2d... Maybe there is an object subtype that can be similarly associated but include a 3d script. I'm not aware of a solution like that though.
And for as simple as this design is, you could make a stretchable segmented beam that could be snapped into place and updated as necessary in a matter of minutes.

[Patrick M]

Or... you could script out a full custom window (or use library part maker) that included the shade box and wallhole parameters you are looking for