GNU Info

(aalib.info)Skeleton

---

Next: Initialization Prev: AA-Project Up: Top

---

Enter node , (file) or (file)node

AA-lib program skeleton
***********************

   Following piece of code you may want to use as base for your future
AA-lib program:

     #include <aalib.h>
     int
     main (int argc, char **argv)
     {
       aa_context *context;       /* The information about currently
       				initialized device.  */
       aa_palette palette;        /* Emulatted palette (optional) */
     
       char *framebuffer;
     
       /* Parse command line options and output the help text.  */
       if (!aa_parseoptions (NULL, NULL, &argc, argv) || argc != 1)
         {
           printf ("%s", aa_help);
           exit (1);
         }
     
       /* Initialize output driver.  */
       context = aa_autoinit (&aa_defparams);
       if (context == NULL)
         {
           printf ("Failed to initialize aalib\n");
           exit (1);
         }
     
       /* Pointer to the emulated videoram.  */
       framebuffer = aa_image (context);
     
     
       /* Create palette if needed: */
       for (i = 0; i < 256; i++)
         aa_setpalette (palette, i, /* R value 0..255 */ ,
                                    /* G value 0..255 */ ,
                                    /* B value 0..255 */ );
     
       /* Draw something using: */
       aa_putpixel (context, /* X coord */ , /* Y coord */ , /* Color */ );
     
       /* Render whole screen: */
     
       aa_renderpalette (context, palette, aa_defrenderparams,
     		    /* Top left conner of rendered area: */ 0, 0,
     		    /* Bottom right */  aa_scrwidth (context), aa_scrheight (context));
     
       /* If you don't use palette use following function:
       aa_render (context, aa_defrenderparams,
                  0, 0, aa_scrwidth (context), aa_scrheight (context));
       */
     
       /* And make it visible: */
       aa_flush (context);
     
       /* And uninitialize the AA_lib (this probably makes the picture invisible
          again) */
       aa_close (context);
     
       return 1;
     }