编译错误在VS2005，但是OK在VC6

wanxd

编译错误在VS2005，但是OK在VC6 [复制链接]

Dear all,

recently I transform my project from vc6 to vs2005, it occur to the following error:

d:\Program Files\Microsoft Visual Studio 8\VC\ce\include\xtree(1172) : error C3848: expression having type 'const CFormatter::ltwsz' would lose some const-volatile qualifiers in order to call 'bool CFormatter::ltwsz::operator ()(const wchar_t *,const wchar_t *)'
      d:\Program Files\Microsoft Visual Studio 8\VC\ce\include\xtree(1167) : while compiling class template member function 'std::_Tree_nod<_Traits>::_Node *std::_Tree<_Traits>::_Lbound(const wchar_t *const &) const'
      with
      [
         _Traits=std::_Tmap_traits>,false>
      ]
      d:\Program Files\Microsoft Visual Studio 8\VC\ce\include\map(82) : see reference to class template instantiation 'std::_Tree<_Traits>' being compiled
      with
      [
         _Traits=std::_Tmap_traits>,false>
      ]
      d:\ccm_wa\jethzh\nav_sdk#arbrbg#1-jethzh#uida35611\tovs2005\nav_sdk\source\hmi\Formatter.h(201) : see reference to class template instantiation 'std::map<_Kty,_Ty,_Pr>' being compiled
      with
      [
         _Kty=const wchar_t *,
         _Ty=std::wstring,
         _Pr=CFormatter::ltwsz
      ]

my source code as follows:

#ifndef __FORMATTER_H__
#define __FORMATTER_H__

#ifdef _MT
#  undef _MT
#  include
#  define _MT 1
#else
#  include
#endif

#include
#include

#include "ResourceManager.h"
#include "Utils.h"

class CFormatter : public CUtils
{
  public:
CFormatter() {}

/** @brief Constructor, setting format from string ID. */
template
CFormatter(FormatType format)
{
SetFormat(format);
}

inline CFormatter& SetFormat(const wchar_t* format)
{
m_fmt = format;
return *this;
}

inline CFormatter& SetFormat(std::wstring format)
{
m_fmt = format;
return *this;
}

inline CFormatter& SetFormat(UINT format)
{
m_fmt = (LPCTSTR)(CResourceManager::GetInstance()->GetString(format));
return *this;
}

operator const std::wstring();

operator const wchar_t*();

void Get(CString& strResult);

template
CFormatter& Add(LPCTSTR key, LPCTSTR format, ValueType value)
{
CString buf;
buf.Format(format, value);
m_map[key] = buf;
return *this;
}

template
CFormatter& Add(LPCTSTR key, ValueType value)
{
m_map[key] = ToWString(value);
return *this;
}

  private:
void Format();

struct ltwsz
{
bool operator()(const wchar_t* left, const wchar_t* right)
{
return wcscmp(left, right) < 0;
}
};

std::wstring m_fmt;
std::map m_map;
std::wstring m_res;
};

#endif //__FORMATTER_H__

zxmjiangjun

see msdn:
A variable with a specified const-volatile type can only call member functions defined with same or greater const-volatile qualifications.
please modify your code.

编译错误在VS2005，但是OK在VC6 [复制链接]

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