BUG. Qt 5.0.2, Windows 32-bit, MinGW 4.7

test2013

This example code from Max Schlee's Qt-book not comliling.

@/* ======================================================================
** main.cpp
** ======================================================================
**
** ======================================================================
** Copyright (c) 2007 by Max Schlee
** ======================================================================
*/

#include <QtGui>
#include "Counter.h"

// ----------------------------------------------------------------------
int main (int argc, char** argv)
{
QApplication app(argc, argv);

QLabel      lbl("0");
QPushButton cmd&#40;"ADD"&#41;;
Counter     counter;

lbl.show(&#41;;
cmd.show(&#41;;

QObject::connect(&cmd, SIGNAL(clicked()), 
                 &counter, SLOT(slotInc())
                );

QObject::connect(&counter, SIGNAL(counterChanged(int)),
                 &lbl, SLOT(setNum(int))
                );

QObject::connect(&counter, SIGNAL(goodbye()), 
                 &app, SLOT(quit())
                );

return app.exec&#40;&#41;;

}
@

IDE says:
@main.cpp:-1: In function 'int qMain(int, char**)':
main.cpp:16: error: variable 'QApplication app' has initializer but incomplete type
main.cpp:18: error: 'QLabel' was not declared in this scope
main.cpp:18: error: expected ';' before 'lbl'
main.cpp:19: error: 'QPushButton' was not declared in this scope
main.cpp:19: error: expected ';' before 'cmd'
main.cpp:22: error: 'lbl' was not declared in this scope
main.cpp:23: error: 'cmd' was not declared in this scope
main.cpp:38: warning: control reaches end of non-void function [-Wreturn-type]
@

I had same-like problem with "Hello World" project. At that time the problem was solved by replacing
@#include <QtGui>@

To
@#include <QApplication>
#include <QLabel>@

But now it did not help. I tried to recompile "Hello World" project with "#include <QtGui>" and it is going. What's the problem? Random bug?

-- UPD --

OS Windows 7 Pro SP1, x64.
Qt build: "Qt 5.0.2, Windows 32-bit, MinGW 4.7":http://download.qt-project.org/official_releases/qt/5.0/5.0.2/qt-windows-opensource-5.0.2-mingw47_32-x86-offline.exe
Qt build installation settings: default.

b1gsnak3

Not a bug... Just add QT += widgets to your PRO file and #include <QtWidgets> instead of QtGui

Near3

Ignore this.