Qt Reference Documentation

# qwidgets.cpp Example File

declarative/cppextensions/qwidgets/qwidgets.cpp

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     ** This file is part of the examples of the Qt Toolkit.
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     #include <QtDeclarative/QDeclarativeExtensionPlugin>
     #include <QtDeclarative/qdeclarative.h>
     #include <QtGui/QGraphicsProxyWidget>
     #include <QtGui/QPushButton>
     #include <QDebug>

     class MyPushButton : public QGraphicsProxyWidget
     {
         Q_OBJECT
         Q_PROPERTY(QString text READ text WRITE setText NOTIFY textChanged)

     public:
         MyPushButton(QGraphicsItem* parent = 0)
             : QGraphicsProxyWidget(parent)
         {
             widget = new QPushButton("MyPushButton");
             widget->setAttribute(Qt::WA_NoSystemBackground);
             setWidget(widget);

             QObject::connect(widget, SIGNAL(clicked(bool)), this, SIGNAL(clicked(bool)));
         }

         QString text() const
         {
             return widget->text();
         }

         void setText(const QString& text)
         {
             if (text != widget->text()) {
                 widget->setText(text);
                 emit textChanged();
             }
         }

     Q_SIGNALS:
         void clicked(bool);
         void textChanged();

     private:
         QPushButton *widget;
     };

     class QWidgetsPlugin : public QDeclarativeExtensionPlugin
     {
         Q_OBJECT
     public:
         void registerTypes(const char *uri)
         {
             qmlRegisterType<MyPushButton>(uri, 1, 0, "MyPushButton");
         }
     };

     #include "qwidgets.moc"

     Q_EXPORT_PLUGIN2(qmlqwidgetsplugin, QWidgetsPlugin);