Thiago, Of course all these 1-5 points are followed as You can see visiting 1st mentioned link: https://stackoverflow.com/q/50064670/630169 https://stackoverflow.com/a/50064976/630169
Please take a look at the line which causes the link problem: QMetaEnum myEnum = QMetaEnum::fromType<MyLibrary::MyEnumClass>(); It happen only for combination: Q_NAMESPACE, Q_ENUM_NS(MyEnumClass), build under Windows. You may try it to build yourself under Windows to see the problem: https://github.com/akontsevich/ConnectedCreatorPlugin Thanks! :) -- Best regards, Aleksey Linked in https://www.linkedin.com/in/alekseykontsevich 27.04.2018, 21:18, "Thiago Macieira" <thiago.macie...@intel.com>: > Hello Aleksey > > None of your questions looks like problems in Qt itself, so I've taken the > liberty of replying to the interest mailing list (discussion about *using* > Qt). > > On Friday, 27 April 2018 10:11:52 PDT Aleksey Kontsevich wrote: >> mydialog.obj:-1: error: LNK2001: unresolved external symbol >> "struct QMetaObject const MyLibrary::staticMetaObject" >> (?staticMetaObject@MyLibrary@@3UQMetaObject@@B) > > Make sure that: > > 1) class MyLibrary is in a header file > 2) that header file is listed in the library's .pro file HEADERS line > 3) moc was run in the header and the resulting output was compiled > 4) your definition contains an export macro: > > class MY_LIBRARY_EXPORT MyLibrary : .... > > 5) said macro is __declspec(dllexport) when compiling the library and > __declspec(dllimport) when linking the library. This is "Windows DLL Basics" > and you need to learn it. > > -- > Thiago Macieira - thiago.macieira (AT) intel.com > Software Architect - Intel Open Source Technology Center _______________________________________________ Development mailing list Development@qt-project.org http://lists.qt-project.org/mailman/listinfo/development