I have been struggling with character conversion, please help.

I have a file in Chinese (GB2312), I need to read it and then print it on screen (in linux), I got garbage output on screen such as ��?��. I have tried for hours with different conversion. Nothing works!

Here is the code:

Qt Code: 
  1. static QString toUnicode( const QString& str )
  2.  {
  3.    //return QTextCodec::codecForName( "GB2312" )->toUnicode( str.toLatin1() ).toLocal8Bit();   // <- not working
  4.    //return QTextCodec::codecForName( "GB2312" )->toUnicode( str.toLatin1() ).toUtf8();          // <- not working
  5.    return QTextCodec::codecForName( "GB2312" )->toUnicode( str.toLatin1() );                       // <- not working
  6. }
  7.  
  8.  void my_read_func() 
  9. {
  10.       QSettings settings( filename, QSettings::IniFormat );
  11.       settings.setIniCodec( QTextCodec::codecForName( "GB2312" ) );
  12.       settings.beginGroup( "xxxx" );
  13.       {
  14.         foreach( const QString& key, settings.allKeys() ) {
  15.           QStringList strList = settings.value( key ).toStringList();
  16.  
  17.           qDebug() << key << "=" << strList;      // <- garbage out
  18.  
  19.           foreach( const QString& str, strList ) {
  20.            qDebug() << toUnicode( key ) << "=" << toUnicode( str );      // <- garbage out
  21.           }
  22.  
  23.         }
  24.       }
  25.       settings.endGroup();
  26. }
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