Replace value in QByteArray & QDataStream

Unless there is an issue with byte order, you should be able to open the file in read/write mode, and call the Read function passing the pointer to a DWORD variable and reading two bytes.  If the variable has a value of 0, seek backwards 2 bytes and write the value 22.

CFile f;
f.Open( strFileName, CFile::modeRead | CFile::modeWrite );
DWORD i;
const DWORD v22 = 22;
while( f.Read( &i, 2 ) == 2 )
{
  if( i == 0 )
  {
    f.Seek( -2, CFile::current );
    f.Write( &v22 );
  }
}

If there is an issue with byte order, then you just need to replace v22=22 with v22=0x1600;

Opps... that should have been something like
f.Write( &v22, 2 )

and you might have to type case the pointers to get something like this to properly compile.

Sorry, I haven't explained very clear what I want to do here...

The file which is saved is not the same file (the source file). I need to move all the data from the source file to a QByteArray and in the process change the 0 values to 22. Then, I need to compress this byte array with qCompress and only then write it to a newly created file.

So, my problem is that I have to move the data from the source file to the byte array and change to zeros...

All the best,
Peter

there is a ) missing at right of while statement.

Sara

Thanks Sara!