1	#include <stdlib.h>
2	#include <stdio.h>
3	#include <stdint.h>
4	#include "wgif.h"
5
6	#define WIDTH32 32
7	#define HEIGHT32 32
8
9	int fwr(uint8_t *ptr, size_t bytes, void *wp) {
10	return fwrite(ptr, 1, bytes, wp);
11	}
12
13
14	int main() {
15	uint32_t ct[3];
16	struct gif_file gf;
17	uint8_t bitmap[WIDTH32*HEIGHT32];
18	int x, y;
19
20	ct[0]=0x00ffff;
21	ct[1]=0xcccccc;
22	ct[2]=0x000000;
23
24	gf.wr_fnct=fwr;
25	gf.wparm=fopen("helloworld.gif", "wb");
26
27	gif_init(&gf, WIDTH32, HEIGHT32, ct, 3, 0);
28	for (y=0;y<HEIGHT32;y++) {
29	for (x=0;x<WIDTH32;x++) {
30	if (x<y) {
31	bitmap[x+y*WIDTH32]=0;
32	} else if (x==y) {
33	bitmap[x+y*WIDTH32]=2;
34	} else {
35	bitmap[x+y*WIDTH32]=1;
36	}
37	}
38	}
39	gif_image(&gf, 0, 0, WIDTH32, HEIGHT32, NULL((void *)0), 0, bitmap);
40	gif_end(&gf);
41
42	fclose(gf.wparm);
43
44	return 0;
45	}