extern void checked_set (wxFilePickerCtrl* widget, std::string value);
extern void checked_set (wxSpinCtrl* widget, int value);
extern void checked_set (wxComboBox* widget, int value);
extern void checked_set (wxFilePickerCtrl* widget, std::string value);
extern void checked_set (wxSpinCtrl* widget, int value);
extern void checked_set (wxComboBox* widget, int value);