Link error in Windows

Hi,

I have a class in library as:

Code:

---

class MY_EXPORT MyWidget : public QWidget
{
  Q_OBJECT
...
};

---

Where in Windows, MY_EXPORT is defined as "__declspec(dllexport)"

Now I use this class to build executable by linking to its library

Code:

---

class DerivedWidget : public MyWidget {
 Q_OBJECT
...
};.

---

On linking, it complains errors:

moc_DerivedWidget.obj : error LNK2001: unresolved external symbol "public: static struct QMetaObject const MyWidget::staticMetaObject" (?staticMetaObject@MyWidget@@2UQMetaObject@@B)

Please help. Many thanks!

Found the problem. it is related to import/export...something that is totally screwed by Microsoft...