Turbo C 2.0、Borland C++库函数及用例

Turbo C 2.0、Borland C++库函数及用例(48) outtextxy(midx, midy+2*textheight("W"), modename); /* clean up */
getch();
closegraph();
return 0;
}
函数名: getmoderange
功 能: 取给定图形驱动程序的模式范围
用 法: void far getmoderange( int graphdriver,
int far *lomode,
int far *himode );
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;
int midx, midy;
int low, high;
char mrange[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 */
} midx = getmaxx() / 2;
midy = getmaxy() / 2; /* get the mode range for this driver */
getmoderange(gdriver, &low, &high); /* convert mode range info. into strings */
sprintf(mrange, "This driver supports modes %d..%d",
low, high); /* display the information */
settextjustify(CENTER_TEXT, CENTER_TEXT);
outtextxy(midx, midy, mrange); /* clean up */
getch();
closegraph();
return 0;
}
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\n",
grapherrormsg(errorcode));
printf("Press any key to halt:");