#include <QtGui> doesn't work

user001

By running the example of FindDialog of C++ GUI Programming with Qt4, I found it wouldn't compile if only include <QtGui>. I have to #include individual widgets. I am using latest Qt (version 5.0.2). Qt cannot backward compatible with older version?

SGaist

Hi,

In Qt 5, widgets have been moved in the QtWidget module.

JKSH

Qt 5 has many major changes compared to Qt 4. The code is mostly backwards compatible, but you need to change your configurations and headers.

Add this line to the .pro file...
@
QT += widgets
@

...and use #include <QtWidgets> instead of #include <QtGui>

More info at http://qt-project.org/doc/qt-5.1/qtdoc/portingcppapp.html