main.obj:-1: error: LNK2001: unresolved external symbol "public: virtual struct QMetaObject const * __thiscall ApplicationData::metaObject(void)const " (?metaObject@ApplicationData@@UBEPBUQMetaObject@@XZ)
main.obj:-1: error: LNK2001: unresolved external symbol "public: virtual void * __thiscall ApplicationData::qt_metacast(char const *)" (?qt_metacast@ApplicationData@@UAEPAXPBD@Z)
main.obj:-1: error: LNK2001: unresolved external symbol "public: virtual int __thiscall ApplicationData::qt_metacall(enum QMetaObject::Call,int,void * *)" (?qt_metacall@ApplicationData@@UAEHW4Call@QMetaObject@@HPAPAX@Z)
release\testQml.exe:-1: error: LNK1120: 3 unresolved externals