[xsd-users] retrieving polygon from raeumlicherGeltungsbereich

[Boris Kolpackov]

Hi Jan,

Jan Pauwels <Jan.Pauwels at graphicomp.com> writes:

>             ::gml::SurfacePropertyType surf = *j;
>             ::gml::AbstractSurfaceType absurf = surf._Surface();
>             ::gml::AbstractGMLType ab = absurf;

You need to use references instead of making copies:

gml::SurfacePropertyType& surf = *j;
gml::AbstractSurfaceType& absurf = surf._Surface();
gml::AbstractGMLType& ab = absurf;

When you make a copy using a copy constructor, you "slice" the object
and only get the statically-typed portion of it. This is why you
dynamic_cast fails.

Also note that this is a fairly basic C++ knowledge and we normally
don't help with such problems on this mailing list.

Boris