Reading Geometry from step files

Hello everyone

I need to read simple step files (turning parts) with C++. Therefore I try to use Open Cascade. I already can open my step file and read the number of shapes in my file. Now I need to get the geometrical data (length, width, diameters..), but I dont know how it works, although I read all of the documentations. Is there anyone who already worked with Open Cascade and can help me with my Problem? I would be very happy, thanks alot !!

That's my Code since then

#include <iostream>

#include <STEPControl_Reader.hxx>

#include <string>



using namespace std;





int main() {



STEPControl_Reader reader;

IFSelect_ReturnStatus stat = reader.ReadFile("C:\\Users\\Kelevradesktop.Kelevra-desktop\\Desktop\\Studienarbeit\\linkrods.step");

IFSelect_PrintCount mode = IFSelect_ListByItem;

reader.PrintCheckLoad(false, mode);



Standard_Integer NbRoots = reader.NbRootsForTransfer();                      //Transfer whole file

Standard_Integer num = reader.TransferRoots();



Standard_Integer NbTrans = reader.TransferRoots();

TopoDS_Shape result = reader.OneShape();

TopoDS_Shape shape = reader.Shape();



cout << NbRoots << endl;

cout << NbTrans << endl;

cout << num << endl;



system("pause");



return 0;

}