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multipagewidgetextensionfactory.cpp Example File
designer/containerextension/multipagewidgetextensionfactory.cpp

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 #include "multipagewidgetextensionfactory.h"
 #include "multipagewidgetcontainerextension.h"
 #include "multipagewidget.h"

 MultiPageWidgetExtensionFactory::MultiPageWidgetExtensionFactory(QExtensionManager *parent)
     : QExtensionFactory(parent)
 {}

 QObject *MultiPageWidgetExtensionFactory::createExtension(QObject *object,
                                                           const QString &iid,
                                                           QObject *parent) const
 {
     MultiPageWidget *widget = qobject_cast<MultiPageWidget*>(object);

     if (widget && (iid == Q_TYPEID(QDesignerContainerExtension))) {
         return new MultiPageWidgetContainerExtension(widget, parent);
     } else {
         return 0;
     }
 }


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Qt 4.6.3