Q_OBJECT macro issue

[kandalf]

Hi guys, I'm facing a problem with Q_OBJECT macro.
I've built a MainWindow with Designer, then I've declared a class which inherits from the class generated with moc from that .ui file and from QMainWindow.

I've declared a private slot in this new class, with Q_OBJECT macro defined but, when I run make, I got the following error:

In file included from moc_GeneratorMainWindow.cpp:10:
GeneratorMainWindow.h:38:7: warning: no newline at end of file
moc_GeneratorMainWindow.cpp:40: error: `staticMetaObject' is not a member of
type `Ui::GeneratorMainWindowUI'
moc_GeneratorMainWindow.cpp: In member function `virtual void*
GeneratorMainWindow::qt_metacast(const char*)':
moc_GeneratorMainWindow.cpp:57: error: 'class Ui::GeneratorMainWindowUI' has no
member named 'qt_metacast'
moc_GeneratorMainWindow.cpp: In member function `virtual int
GeneratorMainWindow::qt_metacall(QMetaObject::Call , int, void**)':
moc_GeneratorMainWindow.cpp:63: error: 'class Ui::GeneratorMainWindowUI' has no
member named 'qt_metacall'
make[1]: *** [moc_GeneratorMainWindow.o] Error 1
make[1]: Leaving directory `/home/leonardo/svn/3WDGFGeneratorFrontEnd/src'
make: *** [sub-src-make_default] Error 2

And if I don't define Q_OBJECT macro I got no errors, but a custom slot is not defined.

My code is this:

//GeneratorMainWindow.h
#ifndef GENERATORMAINWINDOW_H
#define GENERATORMAINWINDOW_H
 
#include <QMainWindow>
#include "GeneratorMainWindowUI.h"
 
 
class GeneratorMainWindow : private Ui::GeneratorMainWindowUI, public QMainWindow
{
	Q_OBJECT
	public:
		GeneratorMainWindow(QWidget *parent = 0, Qt::WFlags flags = 0);
 
	private slots:
		void showAddFieldDialog();
};
 
#endif
 
 
//GeneratorMainWindow.cpp
 
#include "GeneratorMainWindow.h"
#include "AddCustomFieldDialog.h"
 
GeneratorMainWindow::GeneratorMainWindow(QWidget *parent, Qt::WFlags flags) : QMainWindow(parent, flags)
{
	setupUi(this);
	mainSplitter->setStretchFactor(1,1);
	connect( addButton, SIGNAL(clicked()), this, SLOT(showAddFieldDialog()) );
}
 
void GeneratorMainWindow::showAddFieldDialog()
{
	AddCustomFieldDialog *addDialog = new AddCustomFieldDialog(this);
	addDialog->show();
}

//GeneratorMainWindow.h
#ifndef GENERATORMAINWINDOW_H
#define GENERATORMAINWINDOW_H

#include <QMainWindow>
#include "GeneratorMainWindowUI.h"


class GeneratorMainWindow : private Ui::GeneratorMainWindowUI, public QMainWindow
{
	Q_OBJECT
	public:
		GeneratorMainWindow(QWidget *parent = 0, Qt::WFlags flags = 0);
		
	private slots:
		void showAddFieldDialog();
};

#endif


//GeneratorMainWindow.cpp

#include "GeneratorMainWindow.h"
#include "AddCustomFieldDialog.h"

GeneratorMainWindow::GeneratorMainWindow(QWidget *parent, Qt::WFlags flags) : QMainWindow(parent, flags)
{
	setupUi(this);
	mainSplitter->setStretchFactor(1,1);
	connect( addButton, SIGNAL(clicked()), this, SLOT(showAddFieldDialog()) );
}

void GeneratorMainWindow::showAddFieldDialog()
{
	AddCustomFieldDialog *addDialog = new AddCustomFieldDialog(this);
	addDialog->show();
}

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Any ideas?

Thanx a lot in advance.

[jpn]

The class inheriting QObject must be first in the inheritance list, so try switching the order:

class GeneratorMainWindow : public QMainWindow, private Ui::GeneratorMainWindowUI
{
...
};

class GeneratorMainWindow : public QMainWindow, private Ui::GeneratorMainWindowUI
{
...
};

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Rerun qmake after the modification has been done.

[kandalf]

The class inheriting QObject must be first in the inheritance list, so try switching the order:

class GeneratorMainWindow : public QMainWindow, private Ui::GeneratorMainWindowUI
{
...
};

class GeneratorMainWindow : public QMainWindow, private Ui::GeneratorMainWindowUI
{
...
};

To copy to clipboard, switch view to plain text mode 

Rerun qmake after the modification has been done.

Thanx a lot! That was all. I'm sorry for such a dumb question, I'm quite rusty with Qt, I've started to use it after a while.

Cheers and thanx again.