Fl_Image
   |
   +----Fl_Pixmap
           |
           +----Fl_GIF_Image,
                Fl_XPM_Image
#include <FL/Fl_Pixmap.H>
The Fl_Pixmap class supports caching and drawing of colormap (pixmap) images, including transparency.
The constructors create a new pixmap from the specified XPM data.
The destructor free all memory and server resources that are used by the pixmap.