error: void value not ignored as it ought to be

[dreamer]

What's wrong?

void XmlGenerator::sourceWrite(QTextEdit* editor){
	if(!f->open(QIODevice::ReadWrite|QIODevice::Truncate))
		std::cout<<"f problem"<<std::endl;
 
	if(!file->open(QIODevice::ReadWrite))
		std::cout<<"f problem"<<std::endl;
 
	QTextStream in(file);
	QTextStream out(f);
	QString line;
	 while(!(line=in.readLine()).isNull()){
	if(!line.isEmpty()){
    if(line.at(0).toLatin1() != '<'){
    out<<line<<"\n";
    editor->setPlainText(line)<<"\n";
   }
  }
 }//while
 out<<"END";
 editor->setPlainText("END");
 f->close();
 file->close();
}

void XmlGenerator::sourceWrite(QTextEdit* editor){
	if(!f->open(QIODevice::ReadWrite|QIODevice::Truncate))
		std::cout<<"f problem"<<std::endl;

	if(!file->open(QIODevice::ReadWrite))
		std::cout<<"f problem"<<std::endl;
		
	QTextStream in(file);
	QTextStream out(f);
	QString line;
	 while(!(line=in.readLine()).isNull()){
	if(!line.isEmpty()){
    if(line.at(0).toLatin1() != '<'){
    out<<line<<"\n";
    editor->setPlainText(line)<<"\n";
   }
  }
 }//while
 out<<"END";
 editor->setPlainText("END");
 f->close();
 file->close();
}

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If I put a comment on line number 15, it compiles without any error, so i think that line is the problem........

[mitro]

I guess line 15 is really incorrect. editor->setPlainText(line) returns void so you should not use << on it. I think it'd be better to rewrite it like this:

line += '\n';
editor->setPlainText(line);

line += '\n';
editor->setPlainText(line);

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[dreamer]

editor->insertPlainText(line+"\n");

editor->insertPlainText(line+"\n");

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it works ........