Fl_Button | +----Fl_Repeat_Button
The Fl_Repeat_Button is a subclass of Fl_Button that generates a callback when it is pressed and then repeatedly generates callbacks as long as it is held down. The speed of the repeat is fixed and depends on the implementation.
Fl_Repeat_Button::Fl_Repeat_Button(int x, int y, int w, int h, const char *label = 0)
Creates a new Fl_Repeat_Button widget using the given position, size, and label string. The default boxtype is FL_UP_BOX.
Deletes the button.