How to read line from file

[jacek]

now run

Yes, but IMO your first attempt was better (except for the bug).

I would implement it like this (not tested):

QString HTML_Edit::file_get_line( const QString& fullFileName, int lineNr )
{
    QString result;  
    QFile file( fullFileName );
    if( file.open( QIODevice::ReadOnly | QIODevice::Text ) ) {
       QTextStream in( &file );
       int currentLineNr = 0; // or 1
       while( ! in.atEnd() ) {
          QString line( in.readLine() );
          if( currentLineNr == lineNr ) {
             result = line;
             break;
          }
          currentLineNr += 1;
       }
    }
    return result;
}

QString HTML_Edit::file_get_line( const QString& fullFileName, int lineNr )
{
    QString result;  
    QFile file( fullFileName );
    if( file.open( QIODevice::ReadOnly | QIODevice::Text ) ) {
       QTextStream in( &file );
       int currentLineNr = 0; // or 1
       while( ! in.atEnd() ) {
          QString line( in.readLine() );
          if( currentLineNr == lineNr ) {
             result = line;
             break;
          }
          currentLineNr += 1;
       }
    }
    return result;
}

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