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fg_box_area

Usage

   #include <fg.h>
   long int far fg_box_area(fg_const_pbox_t b)

Description

   Returns the number of pixels in a box. This is very useful for
   calculating the storage requirements for fg_readbox.

Example 


   {
   fg_color_t *color_p;
   fg_box_t read_box;
   read_box [FG_X1] = 10;
   read_box [FG_Y1] = 0;
   read_box [FG_X2] = 100;
   read_box [FG_Y2] = 100;
   color_p = malloc(sizeof(fg_color_t) *
       fg_box_area(read_box));
   assert(color_p != NULL);
   fg_readbox(read_box, color_p);
       .
       .
   }