getdrivername函数名，意为返回指向包含当前图形驱动程序名字的字符串
指针。
函数名
getdrivername
功 能
返回指向包含当前图形驱动程序名字的字符串指针
用 法
char *getdrivename(void);
程序例
#include
#include
#include
#include
int main(void)
{
/* request auto detection */
int gdriver = DETECT, gmode, errorcode;
/* stores the device driver name */
char *drivername;
/* initialize graphics and local variables */
/* read result of initialization */
errorcode = graphresult();
/* an error occurred */
if (errorcode != grOk)
{
grapherrormsg(errorcode));
getch();
/* terminate with an error code */
exit(1);
}
setcolor(getmaxcolor());
/* get name of the device driver in use */
drivername = getdrivername();
/* for centering text on the screen */
settextjustify(CENTER_TEXT, CENTER_TEXT);
/* output the name of the driver */
outtextxy(getmaxx() / 2, getmaxy() / 2,
drivername);
/* clean up */
getch();
closegraph();
return 0;
}