Strange linker errors with QVector

I try to use Qt with VS2010. I got 2 projects, one is fine, the other gets these errors:
(sorry - I am using a german system)

I alredy tried to instanciate QVector<QPointF> but this does not solve the problem.

FixturePolygon.cpp.obj : error LNK2019: Verweis auf nicht aufgel÷stes externes Symbol ""__declspec(dllimport) public: class QVector<class QPointF>::const_iterator __thiscall QVector<class QPointF>::end(void)const " (__imp_?end@?$QVector@VQPointF@@@@QBE?AVconst_iter ator@1@XZ)" in Funktion ""public: __thiscall QForeachContainer<class GPolygonF>::QForeachContainer<class GPolygonF>(class GPolygonF const &)" (??0?$QForeachContainer@VGPolygonF@@@@QAE@ABVGPoly gonF@@@Z)".
main.cpp.obj : error LNK2001: Nicht aufgel÷stes externes Symbol ""__declspec(dllimport) public: class QVector<class QPointF>::const_iterator __thiscall QVector<class QPointF>::end(void)const " (__imp_?end@?$QVector@VQPointF@@@@QBE?AVconst_iter ator@1@XZ)".
Polygon.cpp.obj : error LNK2001: Nicht aufgel÷stes externes Symbol ""__declspec(dllimport) public: class QVector<class QPointF>::const_iterator __thiscall QVector<class QPointF>::end(void)const " (__imp_?end@?$QVector@VQPointF@@@@QBE?AVconst_iter ator@1@XZ)".
FixturePolygon.cpp.obj : error LNK2019: Verweis auf nicht aufgel÷stes externes Symbol ""__declspec(dllimport) public: class QVector<class QPointF>::const_iterator __thiscall QVector<class QPointF>::begin(void)const " (__imp_?begin@?$QVector@VQPointF@@@@QBE?AVconst_it erator@1@XZ)" in Funktion ""public: __thiscall QForeachContainer<class GPolygonF>::QForeachContainer<class GPolygonF>(class GPolygonF const &)" (??0?$QForeachContainer@VGPolygonF@@@@QAE@ABVGPoly gonF@@@Z)".
main.cpp.obj : error LNK2001: Nicht aufgel÷stes externes Symbol ""__declspec(dllimport) public: class QVector<class QPointF>::const_iterator __thiscall QVector<class QPointF>::begin(void)const " (__imp_?begin@?$QVector@VQPointF@@@@QBE?AVconst_it erator@1@XZ)".
Polygon.cpp.obj : error LNK2001: Nicht aufgel÷stes externes Symbol ""__declspec(dllimport) public: class QVector<class QPointF>::const_iterator __thiscall QVector<class QPointF>::begin(void)const " (__imp_?begin@?$QVector@VQPointF@@@@QBE?AVconst_it erator@1@XZ)".
PhysicsEditor.exe : fatal error LNK1120: 2 nicht aufgel÷ste externe Verweise.
LINK failed. with 2

I created a small test project - same problem.

This seems to be the bug:
Qt defines QVector<QPointF> as external in QVector if the compiler is VC.
But somehow forgets to put the classes into the library.

Quote:

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Originally Posted by bmueller63

Qt defines QVector<QPointF> as external in QVector if the compiler is VC.
But somehow forgets to put the classes into the library.

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Where? Point a location.
Show code where you are using defining this QList.