topic APIdefs_Project.h is missing in Archicad C++ API

APIdefs_Project.h is missing

H_smity — Tue, 16 Dec 2025 23:32:24 GMT

Hello, I wanted to compile my addon but i get this problem

#include "APIDiagCodes.h" #include "APINotifyDefs.h" #include "APINotify.h" #include "APIdefs_Project.h" #include "APIProjectOperation.h"

these includes are not found , I tried to search them inside the support/inc and support/module but neither one of them is found please Help
BTW: i am trying to create an Addon for AC26

Re: APIdefs_Project.h is missing

BerndSchwarzenbacher — Tue, 06 Jan 2026 17:33:15 GMT

Hi!

None of the headers you listed are part of any DevKit for AC22 - AC29.

- What's the template you are using?

- What function definitions are missing if you remove these includes?

- Are you sure those headers are not in your project?

Best regards,
Bernd

Re: APIdefs_Project.h is missing

Akos Somorjai — Fri, 09 Jan 2026 11:21:06 GMT

Hi,

I checked the Archicad source, and we don't have any header named "APIdefs_Project.h". Could you please check if it is part of your own add-on's source?

Best,

Akos