Is there a command-line window in Qt4?

I want to write a observer on server,I like the style of window's cmd or linux's terminal.But I dont know if Qt4 has this function?

Well, Konsole, the *nix terminal used in KDE is written using Qt.

I think the question is "do we have a ready-made widget that acts as a terminal we can attach to our own applications?" and if that is the question, then the answer is "no".