Re: Facing problem while pushing derived class pointers of a template class into to a STL list
Shilpa Uttarwar wrote:
Platform : Windows XP, VisualStudio2005, VC++
Hello,
I am facing problem while pushing derived class pointers of a
template class into to a STL list.
The base class is a template class:
template <class TAccessor, template <typename T> class TRowset =
CRowset>
class CDETAILOleDBSet: public CABIOleDbSet<TAccessor, TRowset>, public
CDETAILBaseSet
2. I have declared a list container to hold pointers of this
class as:
template <class TAccessor, template <typename T> class TRowset =
CRowset> class CDETAILOleDBSet;
typedef std::list<CDETAILOleDBSet* >tDetailOleDBRecSetCont;
This is not legal code and should not compile - CDETAILOleDbSet is not a
class, it's a template. You cannot declare a pointer to a template, only to
an instantiation of the template. The actual base class of your concrete
class is:
CDETAILOleDbSet<CAccessor<CComDetailOleDBSetAccessor>, CRowset>
so your list should be:
typedef std::list<
CDETAILOleDbSet<
CAccessor<CComDetailOleDBSetAccessor>,
CRowset>
> tDetailOleDBRecSetCont;
Or perhaps you didn't post the actual code...? As Joe responded, a minimal
complete program that illustrates the problem is very helpful in diagnosing
exactly what's wrong.
-cd
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