函数名: registerbgidriver

功 能: 登录已连接进来的图形驱动程序代码

用 法: int registerbgidriver(void(*driver)(void));

程序例:

#include

#include

#include

#include

int main(void)

{

/* request auto detection */

int gdriver = DETECT, gmode, errorcode;

/* register a driver that was added into graphics.lib */

errorcode = registerbgidriver(EGAVGA_driver);

/* report any registration errors */

if (errorcode < 0)

{

printf("Graphics error: %s\", grapherrormsg(errorcode));

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

getch();

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

}

/* 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 */

}

/* draw a line */

line(0, 0, getmaxx(), getmaxy());

/* clean up */

getch();

closegraph();

return 0;

}