topic Re: How can I apply override surfaces? in Archicad C++ API

How can I apply override surfaces?

VladicaZivic — Mon, 21 Apr 2025 21:23:12 GMT

For now, in my Archicad addon, I need to apply override surfaces for these ("Outside Face Surface", "Internal Face Surface" & "Edge Surface") to be linked together with AC API. (they should be same material)

So I have tried to use this code, but I am always get "GSErrCode" of "-2130312307".
ChatGPT said it's read-only access issue, so I have tried the code after saving the project file.
I am already purchased license so there should be no such problem.

Here is my code.

void ApplySameOverrideSurface() { GS::Array<API_Guid> elemList; GSErrCode err = ACAPI_Element_GetElemList(API_ZombieElemID, &elemList, APIFilt_OnVisLayer); if (err != NoError) return; for (const API_Guid& guid : elemList) { API_Element element; BNZeroMemory(&element, sizeof(API_Element)); element.header.guid = guid; if (ACAPI_Element_Get(&element) != NoError) continue; int type; #if AC_VERSION >= 26 type = element.header.type.typeID; #else type = element.header.typeID; #endif API_AttributeIndex index; index = CreateAttributeIndex(1); API_Element mask; ACAPI_ELEMENT_MASK_CLEAR(mask); bool pass = type == API_WallID || API_ObjectID; if (pass == false) continue; switch (type) { case API_WallID: //element.wall.composite != CreateAttributeIndex(0) ? index = element.wall.composite : index = element.wall.buildingMaterial; element.wall.oppMat = element.wall.buildingMaterial; element.wall.refMat = element.wall.buildingMaterial; element.wall.sidMat = element.wall.buildingMaterial; ACAPI_ELEMENT_MASK_SET(mask, API_WallType, oppMat); ACAPI_ELEMENT_MASK_SET(mask, API_WallType, refMat); ACAPI_ELEMENT_MASK_SET(mask, API_WallType, sidMat); break; case API_ObjectID: element.object.mat = index; element.object.useObjMaterials = false; ACAPI_ELEMENT_MASK_SET(mask, API_ObjectType, mat); ACAPI_ELEMENT_MASK_SET(mask, API_ObjectType, useObjMaterials); break; } //// Now apply changes err = ACAPI_Element_Change(&element, &mask, nullptr, 0, true); if (err != NoError) { DBPrintf("Failed to override surface for element: %s\n", APIGuidToString(guid).ToCStr().Get()); } } }

If anyone knows the reason, please let me know about it asap.

Kind Regards,
Vladica Zivic

Operating system used: Windows

Re: How can I apply override surfaces?

VladicaZivic — Mon, 21 Apr 2025 21:23:40 GMT

Here are the screenshots.
Kind Regards,
Vladica

Re: How can I apply override surfaces?

Oleg — Fri, 18 Apr 2025 16:04:36 GMT

Don't believe ChatGPT 😀

API ErrorCode:

APIERR_NEEDSUNDOSCOPE -2130312307 8106038D The called command should be encapsulated in a ACAPI_CallUndoableCommand scope.

You need to call the ACAPI_Element_Change in a ACAPI_CallUndoableCommand.

Re: How can I apply override surfaces?

Oleg — Fri, 18 Apr 2025 16:14:00 GMT

Dont belive ChatGPT 😀

API ErrorCide:

APIERR_NEEDSUNDOSCOPE -2130312307 8106038D The called command should be encapsulated in a ACAPI_CallUndoableCommand scope.

Some functions like the ACAPI_Element_Change should be called in a ACAPI_CallUndoableCommand.

Re: How can I apply override surfaces?

Oleg — Fri, 18 Apr 2025 16:42:14 GMT

I tried to reply twice, but the answers were not published. I'll try again.

Error -2130312307 is:

APIERR_NEEDSUNDOSCOPE "The called command should be encapsulated in a ACAPI_CallUndoableCommand scope"

Some functions should be called in a ACAPI_CallUndoableCommand.
See documentation on ACAPI_CallUndoableCommand and examples.

Re: How can I apply override surfaces?

Eduardo Rolon — Sat, 19 Apr 2025 18:44:39 GMT

@Oleg FYI Auto Spam was hiding the message.