Plugin with widget

[jpn]

Take a look at Qt's plugin system. A common mistake is to try to inherit the plugin class from QWidget. Instead of that, you should define a function which creates and returns a widget when asked:

class PluginInterface
{
public:
    virtual ~PluginInterface() {}
 
    virtual QWidget* createWidget(QWidget* parent = 0) const = 0;
};

class PluginInterface
{
public:
    virtual ~PluginInterface() {}

    virtual QWidget* createWidget(QWidget* parent = 0) const = 0;
};

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