Custom Widget constructor and registration problem.

[stepchik]

Hello! I would like to create and register custom widget.

class ResizeStackedWidget : public QStackedWidget
{
Q_CLASSINFO("ClassID", "ResizeStackedWidget") //Try to name class
Q_OBJECT
public:
    ResizeStackedWidget(QWidget * = 0, const char *name = 0 );
	ResizeStackedWidget(const ResizeStackedWidget& other ){}  // Try to resolve no copy constructor
    void setCurrentIndex(int d);
};
 
Q_DECLARE_METATYPE(ResizeStackedWidget* );  //I would like register it. Here error
 
ResizeStackedWidget::ResizeStackedWidget(QWidget * parent, const char *name )
: QStackedWidget(parent)
{
}

class ResizeStackedWidget : public QStackedWidget
{
Q_CLASSINFO("ClassID", "ResizeStackedWidget") //Try to name class
Q_OBJECT
public:
    ResizeStackedWidget(QWidget * = 0, const char *name = 0 );
	ResizeStackedWidget(const ResizeStackedWidget& other ){}  // Try to resolve no copy constructor
    void setCurrentIndex(int d);
};

Q_DECLARE_METATYPE(ResizeStackedWidget* );  //I would like register it. Here error

ResizeStackedWidget::ResizeStackedWidget(QWidget * parent, const char *name )
: QStackedWidget(parent)
{
}

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And get this error "Error C4430: missing type specifier - int assumed. Note: C++ does not support default-int". Where is my mistackes?

[high_flyer]

You don't need to call Q_DECLARE_METATYPE on your custom widget - since it is a QObject already (its a sublcass of QStackedWidget).
Q_DECLARE_METATYPE is for non Qt types that you would like to add to use with the signal slot system and QVariant usage.

[stepchik]

But somewhere in my program i have getType() function. Depends from widget type i do some actions. The problem is ResizeStackedWidget detect as base class QStackedWidget.

String cls = m_widget->metaObject()->className();  //cls = QStackedWidget, but i expected cls = ResizeStackedWidget

String cls = m_widget->metaObject()->className();  //cls = QStackedWidget, but i expected cls = ResizeStackedWidget

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const QMetaObject *QStackedWidget::metaObject() const
{
    return QObject::d_ptr->metaObject ? QObject::d_ptr->metaObject : &staticMetaObject;
}

const QMetaObject *QStackedWidget::metaObject() const
{
    return QObject::d_ptr->metaObject ? QObject::d_ptr->metaObject : &staticMetaObject;
}

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If i step into metaObject() moc_qstackedwidget.cpp, but i suppose to call const QMetaObject *ResizeStackedWidget::metaObject() from moc_resizestackedwidget.cpp file ?

[ChrisW67]

A copy constructor on a QObject does not make much sense. Are you trying to achieve what the Q_DISABLE_COPY macro does?

Other than that, your code snippet generates no errors here.