class Fl_Radio_Button : public Fl_Button

This is the same as a Fl_Button except the type() is initialized to FL_RADIO_BUTTON. When a radio button is turned on, all other radio buttons in the same Fl_Group are turned off. The callback is only generated for the radio button that is turned on.

Fl_Radio_Button(int x,int y,int w,int h,const char *l);

Constructor.