'Hello world' question

[Azevedo]

Hi,
I'm getting familiar with the Qt "hello world".

I do not understand the line

#include "ui_mainwindow.h"

#include "ui_mainwindow.h"

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.
If the file ui_mainwindow.h does not exist how can it be included?

[Radek]

It does (supposing you have created mainwindow.ui in your Designer and declared it in the FORMS directive in your .pro file), don't worry. It'll be created by qmake during building your app.

[Azevedo]

Oh it is created during compilation time then. Thanks!