[API] Has been something changed in DXF/DWG add-on since AC24?

Dejmas — Sun, 12 Sep 2021 23:58:46 GMT

Hello developers,

I am maintaining a plugin for a couple of last versions of the Archicad. The following code had been working overtime. I use it to import my DWG files as LibPart through the plugin. Since AC24 it has been getting a crush on ACAPI_Command_Call. When I try to import the same file manually, it works then.

API_ModulID mdid = { 1198731108, 1322668197 }; // DXF/DWG add-on GSErrCode err; // call the Dxf add-on GSHandle parHdl; err = ACAPI_Goodies(APIAny_InitMDCLParameterListID, &parHdl); if (err != NoError) { WriteReport_Err("APIAny_InitMDCLParameterListID", err); } if (err == NoError) { IO::URL url; dwgFileLoc.ToURL(&url); API_MDCLParameter par; BNZeroMemory(&par, sizeof(par)); par.name = "FileName"; par.type = MDCLPar_string; char str[512] = { 0 }; CHTruncate((const char*)url, str, sizeof(str)); par.string_par = str; err = ACAPI_Goodies(APIAny_AddMDCLParameterID, parHdl, &par); if (err != NoError) { WriteReport_Err("ACAPI_Command_Call", err); } if (err == NoError) { err = ACAPI_Command_Call(&mdid, 'OOBJ', 1, parHdl, nullptr, true); // ^-- From this call it gets access valiation exception since AC 24. if (err != NoError) { WriteReport_Err("ACAPI_Command_Call", err); } else WriteReport("No error."); } }

In my case, DXF/DWG addon does its usual job. I am asked about layers to import in. I am asked about a few of SHX files which I just skip. Then it ends with an exception:

Exception thrown at 0x00007FFDEC97EA72 (DXF_DWG_Engine.dll) in Archicad.exe: 0xC0000005: Access violation reading location 0x0000000000000000.

Exception rises from DXF_DWG_Engine.dll and it seems it falls on dereferencing of a null pointer. I am pretty sure that the DXF DWG addon is working well. There have to be something wrong with how I am using it or with the interaction between other plugins. By the way in API DevKit's example CommunicationManager there is a similar code and the same exception rises from it as well for me (Communication_Manager.cpp line 454).
I know this may take a long time. Please let me know if you figure something out.

Best regards

Tomas

topic [API] Has been something changed in DXF/DWG add-on since AC24? in Archicad C++ API

[API] Has been something changed in DXF/DWG add-on since AC24?