函数名: getmaxcolor

功 能: 返回可以传给函数setcolor的最大颜色值

用 法: int far getmaxcolor(void);

程序例:

#include

#include

#include

#include

int main(void)

{

/* request auto detection */

int gdriver = DETECT, gmode, errorcode;

int midx, midy;

char colstr[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\", grapherrormsg(errorcode));

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

getch();

exit(1); /* terminate with an error code */

}

midx = getmaxx() / 2;

midy = getmaxy() / 2;

/* grab the color info. and convert it to a string */

sprintf(colstr, "This mode supports colors 0..%d", getmaxcolor());

/* display the information */

settextjustify(CENTER_TEXT, CENTER_TEXT);

outtextxy(midx, midy, colstr);

/* clean up */

getch();

closegraph();

return 0;

}