QWidget cannot be created

[Shien]

When I run my project in console window I get this problem:

QWidget: Cannot create a QWidget when no GUI being used

What that supose to mean. I use evething like ussualy plus I have working example.

[wysota]

Do you have an instance of QApplication or QCoreApplication?

[Shien]

I used QtGui

I found the problem.

[Santosh Reddy]

Also check you .pro file has something like this

QT       += core gui

QT       += core gui

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[stampede]

As long as you don't have

QT -= gui

you don't have to worry about the gui module, it's included by default

[wysota]

Furthermore removing the gui module will prevent QApplication from being instantiated and having the gui module and instantiating QCoreApplication instead of QApplication will not make gui work.