setallpallette，功 能是按指定方式改變所有的調色板顏色，類別是函式。
基本介紹
- 外文名：setallpallette
- 類別：函式
- 功 能：按指定方式改變所有的調色板顏色
- 用 法：void far setallpallette
函式名,程式例,
函式名
setallpallette
程式例
#include <graphics.h>
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>
int main(void)
{
/* request auto detection */
int gdriver = DETECT, gmode, errorcode;
struct palettetype pal;
int color, maxcolor, ht;
int y = 10;
char msg[80];
/* initialize graphics and local variables */
initgraph(&gdriver, &gmode, "");
/* read result of initialization */
errorcode = graphresult();
if (errorcode != grOk) /* an error occurred */
{
printf("Graphics error: %s\n", grapherrormsg(errorcode));
printf("Press any key to halt:");
getch();
exit(1); /* terminate with an error code */
}
maxcolor = getmaxcolor();
ht = 2 * textheight("W");
/* grab a copy of the palette */
getpalette(&pal);
/* display the default palette colors */
for (color=1; color<=maxcolor; color++)
{
setcolor(color);
sprintf(msg, "Color: %d", color);
outtextxy(1, y, msg);
y += ht;
}
/* wait for a key */
getch();
/* black out the colors one by one */
for (color=1; color<=maxcolor; color++)
{
setpalette(color, BLACK);
getch();
}
/* restore the palette colors */
setallpalette(&pal);
/* clean up */
getch();
closegraph();
return 0;
}
