Loading DLL from AddOn fails for ArchiCAD27

[Martin Walter]

I have working code for an ArchiCAD-Addon for Versions 22-26. Now I try to run it with ArchiCAD 27 but it fails in the following line:

m_hModule = ::LoadLibrary(wstrDLLPath);

LoadLibrary() returns 0.

I investigated, that ::GetLastError(); returns 127, that means a Procedure is not found.

This does not make much sense in the ::LoadLibrary function.

Maybe it is the 

BOOL APIENTRY DllMain(HMODULE hModule, DWORD  ul_reason_for_call, LPVOID lpReserved);

function that is missing in my DLL. Or did I miss something else?

[Akos Somorjai]

Hi Martin,

Couple of questions:
Is this your own DLL?
Is it on a path accessible by Archicad?
Can you load it if you place the DLL beside Archicad 27?

Best, Akos

[Martin Walter · Accepted solution]

I found my mistake: It is my own DLL and it includes some ArchiCAD API functions. I compiled and linked it against the ArchiCAD 26 API and tried to load the DLL with ArchiCAD 27.