C++ Conversion from VS 6 to VS 2010

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I am converting a project from Visual Studio 6 to Visual Studio 2010, and in VS 2010. The following line:

C++

m_string.AddTail((CList *)&t.m_string);

gives the compile error:

error C2664: 'POSITION CList<type,arg_type>::AddTail(ARG_TYPE)' : cannot convert parameter 1 from '<clist><type,arg_type> *' to 'ATL::CStringT<BaseType,StringTraits> '
          with
          [
              TYPE=CString,
              ARG_TYPE=CString &
          ]
          and
          [
              TYPE=CTickLabel::=::CString,
              ARG_TYPE=CTickLabel::=::CString
          ]
          and
          [
              BaseType=char,
              StringTraits=StrTraitMFC<char>
          ]

Any help is greatly appreciated!!!!

Scott

///////////////////////UPDATE///////////////////////////////////

The definition of m_string is:

C++

CList <cstring,> m_string;

't' is a parameter passed into the routine as: 'const CTickLabel& t'

with:

C++

class CTickLabel : public CObject
{
    DECLARE_SERIAL(CTickLabel)
public:
    CList <cstring,> m_string;
    int m_angle;            // angle of ticklabel

Please e-mail if any questions about the structure of the problem.

Thank you.

Scott

Posted 27-Apr-12 6:57am

ScottCFD

Updated 28-Apr-12 14:15pm

Albert Holguin

v5

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Comments

Chris Meech 27-Apr-12 14:05pm

It would be clearer knowing what is the type of m_string? Is it really a string type or a list type? Also what is the type of 't'?

Jochen Arndt 28-Apr-12 2:53am

Please use the Improve question link to update your question.

Albert Holguin 28-Apr-12 20:06pm

That's an odd problem... seems like the compiler is choosing the incorrect version of CList::AddTail() based on the prototype.

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Aescleal · Answer 1 · 2012-04-29T00:02:00

As Albert said it looks like the compiler's choosing the wrong overload for the function. However I can't see why you need the cast in the call if you're appending an object of exactly the same type. You should be able to write:

m_string.AddTail( &t.m_string );

So go back to VC6, take the cast out and see what it says when you try and compile it. That might give you (and us) a better idea of what's going on.

Another question, what's cstring?

Incidentally having public data members is a really crap idea. It's really hard to keep your class's invariants intact if you let any old Tom, Dick or Harry fiddle with their bits. AND m_string is a really bad name as well - it's a sodding list!

Another thing I've just noticed... you're not explicitly telling the compiler what ARG_TYPE is. Perhaps specifying that (i.e. CList<cstring,cstring & >) might help.
Cheers,

Ash