函数名

setactivepage

功能

设置图形输出活动页

用法

void far setactivepage(int pagenum);

程序例

#include <graphics.h>

#include <stdlib.h>

#include <stdio.h>

#include <conio.h>

int main(void)

{

/* select a driver and mode that supports */

/* multiple pages. */

int gdriver = EGA, gmode = EGAHI, errorcode;

int x, y, ht;

/* initialize graphics and local variables */

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