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** This file is part of the documentation of the Qt Toolkit.
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** General Public License version 2.1 as published by the Free Software
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//! [0]
CONFIG += uitools
//! [0]


//! [1]
#include <QtUiTools>
//! [1]


//! [2]
void on_<object name>_<signal name>(<signal parameters>);
//! [2]


//! [3]
CONFIG += release
//! [3]


//! [4]
target.path = $$[QT_INSTALL_PLUGINS]/designer
INSTALLS += target
//! [4]


//! [5]
QT += script
//! [5]


//! [6]
widget.text = 'Hi - I was built ' + new Date().toString();
//! [6]


//! [7]
class MyExtension: public QObject,
                   public QdesignerContainerExtension
{
    Q_OBJECT
    Q_INTERFACE(QDesignerContainerExtension)

    ...
}
//! [7]


//! [8]
QObject *ANewExtensionFactory::createExtension(QObject *object,
        const QString &iid, QObject *parent) const
{
    if (iid != Q_TYPEID(QDesignerContainerExtension))
        return 0;

    if (MyCustomWidget *widget = qobject_cast<MyCustomWidget*>
            (object))
        return new MyContainerExtension(widget, parent);

    return 0;
}
//! [8]


//! [9]
QObject *AGeneralExtensionFactory::createExtension(QObject *object,
        const QString &iid, QObject *parent) const
{
    MyCustomWidget *widget = qobject_cast<MyCustomWidget*>(object);

    if (widget && (iid == Q_TYPEID(QDesignerTaskMenuExtension))) {
         return new MyTaskMenuExtension(widget, parent);

    } else if (widget && (iid == Q_TYPEID(QDesignerContainerExtension))) {
        return new MyContainerExtension(widget, parent);

    } else {
        return 0;
    }
}
//! [9]


//! [10]
void MyPlugin::initialize(QDesignerFormEditorInterface *formEditor)
{
    if (initialized)
        return;

    QExtensionManager *manager = formEditor->extensionManager();
    Q_ASSERT(manager != 0);

    manager->registerExtensions(new MyExtensionFactory(manager),
                                Q_TYPEID(QDesignerTaskMenuExtension));

    initialized = true;
}
//! [10]