Qt 4.3: objects.h Example File (activeqt/hierarchy/objects.h)

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# objects.h Example File
activeqt/hierarchy/objects.h

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     #ifndef OBJECTS_H
     #define OBJECTS_H

     #include <QWidget>

     class QVBoxLayout;
     class QSubWidget;

     class QParentWidget : public QWidget
     {
         Q_OBJECT
         Q_CLASSINFO("ClassID", "{d574a747-8016-46db-a07c-b2b4854ee75c}");
         Q_CLASSINFO("InterfaceID", "{4a30719d-d9c2-4659-9d16-67378209f822}");
     public:
         QParentWidget(QWidget *parent = 0);

         QSize sizeHint() const;

     public slots:
         void createSubWidget( const QString &name );

         QSubWidget *subWidget( const QString &name );

     private:
         QVBoxLayout *vbox;
     };

     class QSubWidget : public QWidget
     {
         Q_OBJECT
         Q_PROPERTY( QString label READ label WRITE setLabel )

         Q_CLASSINFO("ClassID", "{850652f4-8f71-4f69-b745-bce241ccdc30}");
         Q_CLASSINFO("InterfaceID", "{2d76cc2f-3488-417a-83d6-debff88b3c3f}");
         Q_CLASSINFO("ToSuperClass", "QSubWidget");

     public:
         QSubWidget(QWidget *parent = 0, const QString &name = QString());

         void setLabel( const QString &text );
         QString label() const;

         QSize sizeHint() const;

     protected:
         void paintEvent( QPaintEvent *e );

     private:
         QString lbl;
     };

     #endif // OBJECTS_H