#ifndef PREFERENCES_DIALOG_H #define PREFERENCES_DIALOG_H #include namespace Ui{ class PreferencesDialog; } class PreferencesDialog :public QDialog{ Q_OBJECT public: static PreferencesDialog* instance(); signals: void settingsChanged(); public slots: void syncSettings(); private: explicit PreferencesDialog(QWidget* parent = 0, Qt::WindowFlags f = 0); Ui::PreferencesDialog* ui; }; #endif