#include "graphics.h"
      void writeimagefile(
          const char* title=NULL,	
          double width_inches=7, double border_left_inches=0.75, double
      border_top_inches=0.75,
          int left=0, int right=0, int right=INT_MAX, int bottom=INT_MAX
          );
 

      The writeimagefile function is available in the winbgim implementation of
      BGI graphics. You do not need to include conio.h; just include
      graphics.h. The function saves a portion of the active page in a BMP
      file. The filename must end in "BMP" or ".bmp", or it may be NULL (in
      which case a windows file save dialog box is opened to allow the user to
      select a file name).
  See also
      getimage
      printimage
      readimagefile

getimage printimage readimagefile

  no output of example at the moment
  do not hesitate and add it...