compile a Qt program (by not a Qt programmer)

Hello, I'm sorry because this forum might not be the place to post my questions,
Basically I'm not a Qt programmer. I'm also very new to C++. I have used some interpreted languages though.

So I have an application sourcecode which requires Qt.
I can't share the sourcecode, sorry.

The main sourcefile has the include:

Code:

---

#include <QApplication>

---

Also one of the headers has 'include <QtGui>' header.

So I downloaded the Qt SDK to compile it.
I had Code::Blocks IDE, but looks like Qt Creator which came with the SDK is an IDE too, right?
So should should I set the location of QApplication.h and QtGUI.h or is it automatically added with Qt Creator? Because I got an error and I'm not sure if its the issue.

Sorry for all the mystery.

If you installed the Qt SDK, then everything is already set up for you.

What error do you get?

In function 'void fuctionname()':

"zQMessageBox" has not been declared.

...'functionname()' is a function created by you, correct? u have included a 'z' before the 'QMessageBox', this is the error, just remove it