LNK2019 GetPrivateStaticClass error on my own class?

Development Programming & Scripting
1

I have defined a class like the following in ParseUser.h:

UCLASS()
class PARSEPLUGIN_API UParseUser : public UParseObject
{
	GENERATED_UCLASS_BODY()

My intent is to expose all of the class’ functions through the plugin’s API by decorating the class definition like so, rather than having to add PARSEPLUGIN_API to every function in the class. Unfortunately, doing so throws this error:

Module.ParsePlugin.cpp.obj : error LNK2019: unresolved external symbol "public: static class UClass * __cdecl UParseUser::GetPrivateStaticClass(wchar_t const *)" (?GetPrivateStaticClass@UParseUser@@SAPEAVUClass@@PEB_W@Z) referenced in function "public: static void * __cdecl UParseUser::operator new(unsigned __int64,class UObject *,class FName,enum EObjectFlags)" (??2UParseUser@@SAPEAX_KPEAVUObject@@VFName@@W4EObjectFlags@@@Z)

Now I am most likely doing this completely wrong, because upon looking up this error in the forums I see others have run into the same problem…but it was intentional, like a feature not exposed by Epic. Could someone point me in the right direction to resolve this link error?

2

The code above looks OK. I’m going to take a guess and say that your ParsePlugin module is missing a line inside one of it’s private .cpp files that includes the “ParsePlugin.generated.inl” file, which contains the generated code that implements GetPrivateStaticClass for your class.

–Mike

3

Thank you! This was indeed the issue. I actually had it in a header file (ParsePluginPrivatePCH.h), but moved it over to ParsePlugin.cpp and now it compiles successfully. Thanks again!

4

Hi William,

Did you generate this by using File / Add Code to Project in the editor? That’s usually how I add new Unreal classes (though I still add non-Unreal ones manually). If not, maybe try that if it’s possible?