How to use occ-methods like TColgp_Array2OfVec2d in external packages...

Hello,

always when i try to use OCC-Methods in own-created Source-codes, specially Collection-methods like TColgp_Array2OfVec2d, i get an error message like "You Can not use private members..."

Example of my code...

//MathPack.h
...
TColgp_Array2OfVec2d uvParam_BSP(Handle(Geom_Surface) Surface, math_Matrix xyzMatrix);
...
//
Neither i get return type from TColgp_Array2OfVec2d nor i can use it as input object.

Is that a generally problem with OCC ? I use OCC 5.2 (VS 2003 .NET)

thanx i lot!