error: invalid use of void expression

[faldzip]

Believe me, i have thought about that line several days hehe... I think im passing a html quote to the socket and them displaying that html quote on the QTextEdit (chat)... Obviously, its wrong, otherwise i wouldnt be asking here hehe...

No, you are passing html string to QTextEdit and result of that method (which is "void" - what you can read in documentation) you are passing to socket. So you are passing void - which is exactly nothing - to the socket. So you are writing nothing. And it is only simple C++ knowledge needed to discover that :P

change it into those lines:

chat->setHtml(html);
socket->write(html);

chat->setHtml(html);
socket->write(html);

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