topic How to edit parameters of the element on the scene in Archicad C++ API

How to edit parameters of the element on the scene

Anonymous — Wed, 15 Sep 2021 10:38:14 GMT

Seems like this piece of code is getting lights from the scene correctly, but the values are not saved into objects. What else am I supposed to do in order to change parameters on the element?
Thanks for the help.

 
GS::Array<API_Guid> elemList;
        ACAPI_Element_GetElemList(API_LampID, &elemList, APIFilt_OnActFloor, APIVarId_Light, APINULLGuid);
        for (const auto& e : elemList) {
            API_Element element;
            BNZeroMemory(&element, sizeof(API_Element));
            element.header.guid = e;
            if (ACAPI_Element_Get(&element, 0) == NoError) {
                element.lamp.lightColor = API_RGBColor{ 1.f, 0.f, 0.f };
                element.lamp.lightIsOn  = true;
            }
        }

Re: How to edit parameters of the element on the scene

Ralph Wessel — Sat, 07 Mar 2020 17:46:03 GMT

Use ACAPI_Element_Change to write the change back to the database.

Re: How to edit parameters of the element on the scene

Anonymous — Mon, 09 Mar 2020 10:24:49 GMT

Thanks! To make this post more helpful, you have to wrap the actual element changing logic into ACAPI_CallUndoableCommand because in another case you get APIERR_NEEDSUNDOSCOPE and no changes will occur.