Fl_Window | +----Fl_Single_Window
This is the same as Fl_Window. However, it is possible that some implementations will provide double-buffered windows by default. This subclass can be used to force single-buffering. This may be useful for modifying existing programs that use incremental update, or for some types of image data, such as a movie flipbook.
Creates a new Fl_Single_Window widget using the given position, size, and label (title) string.
Destroys the window and all child widgets.