xstrm.read();

[jacek]

hello is produced by calling Class.Write (see previous post). I'd like to put hello (what the write() do) in the place of 'HI'

OK, so first you must capture the output generated by Class.Write.

Something like:

QString text;
Class.Write( QTextStream( &text,  IO_WriteOnly ) );

QString text;
Class.Write( QTextStream( &text,  IO_WriteOnly ) );

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should be enough.

And then:

QDomElement tag1( doc.createElement( "PLAIN Property" ) );
...
QDomText t1( doc.createTextNode( text ) ); 
tag1.appendChild( t1 );

QDomElement tag1( doc.createElement( "PLAIN Property" ) );
...
QDomText t1( doc.createTextNode( text ) ); 
tag1.appendChild( t1 );

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PS. AFAIK "PLAIN Property" is not a valid name of an element in XML.