Hi,

My GUI project in Qt has a lot of "configuration pages" classes which all inherit directly from QWidget.

Recently, I realized that all these classes share 2 commons slots (loadSettings() and saveSettings()).

Regarding this, I have two questions:

• Does it make sense to write a intermediate base abstract class (lets name it BaseConfigurationPage) with these two slots as virtual pure methods ? (Every possible configuration page will always have these two methods, so I would say "yes")
• Before I do the heavy change in my code (if I have to) : does Qt support virtual pure slots ? Is there anything I should be aware of ?

Here is a code example describing everything:

class BaseConfigurationPage : public QWidget
{
  // Some constructor and other methods, irrelevant here.

  public slots:

    virtual void loadSettings() = 0;
    virtual void saveSettings() = 0;
};

class GeneralConfigurationPage : public BaseConfigurationPage
{
  // Some constructor and other methods, irrelevant here.

  public slots:

    void loadSettings();
    void saveSettings();
};