函数名: getpalette

功 能: 返回有关当前调色板的信息

用 法: void far getpalette(struct palettetype far *palette);

程序例:

#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;

char psize[80], pval[20];

int i, ht;

int y = 10;

/* initialize graphics and local variables */

initgraph(&gdriver, &gmode, "");

/* read result of initialization */

errorcode = graphresult();

/* an error occurred */

if (errorcode != grOk)

{

printf("Graphics error: %s\",

grapherrormsg(errorcode));

printf("Press any key to halt:");

getch();

/* terminate with an error code */

exit(1);

}

/* grab a copy of the palette */

getpalette(&pal);

/* convert palette info. into strings */

sprintf(psize, "The palette has %d \\

modifiable entries.", pal.size);

/* display the information */

outtextxy(0, y, psize);

if (pal.size != 0)

{

ht = textheight("W");

y += 2*ht;

outtextxy(0, y, "Here are the current \\

values:");

y += 2*ht;

for (i=0; i<pal.size; i++, y+=ht)

{

sprintf(pval,

"palette[%02d]: 0x%02X", i,

pal.colors);

outtextxy(0, y, pval);

}

}

/* clean up */

getch();

closegraph();

return 0;

}