QTreeView sorting

[Jonny174]

Hi All.
I trying to use:

struct FLess : public std::binary_function<HASH, HASH, bool>
{
  int Col;
  static void setCol( int C );
 
  inline bool operator()( const HASH &rec1, const HASH &rec2 )
  {
    return ( rec1.hash.value( Col ) < rec2.hash.value( Col ) );
  }
};

struct FLess : public std::binary_function<HASH, HASH, bool>
{
  int Col;
  static void setCol( int C );

  inline bool operator()( const HASH &rec1, const HASH &rec2 )
  {
    return ( rec1.hash.value( Col ) < rec2.hash.value( Col ) );
  }
};

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In programm:

FLess::setCol( 5 );
 
if (order == Qt::AscendingOrder)
    std::sort( Records[i].begin(), Records[i].end(), FLess() );

FLess::setCol( 5 );

if (order == Qt::AscendingOrder)
    std::sort( Records[i].begin(), Records[i].end(), FLess() );

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How make sort by Col?
Thanks.