custom widgets as plugins

[wysota]

So? What is the problem?

struct WidgetInterface{
virtual QWidget *create(QWidget *parent)=0;
// ...
}
struct ListViewInterface{
virtual QListView *create(QWidget *parent)=0;
// ...
}

struct WidgetInterface{
virtual QWidget *create(QWidget *parent)=0;
// ...
}
struct ListViewInterface{
virtual QListView *create(QWidget *parent)=0;
// ...
}

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Or even use only WidgetInterface and check the widgets classname using Qt's meta data access and cast it to its proper class.