This code works for me, thanks.
I want to access the surfaces of this solid ( StepShape_ManifoldSolidBrep ).
Or get TopoDS_Shape from StepShape_ManifoldSolidBrep.
I found StepToTopoDS_Builder, and made code
C++:
bool ImportStep::ImportSolid(const Handle(StepShape_ManifoldSolidBrep)& msb...