setgraphbufsize

编辑:包袱网互动百科 时间:2020-04-08 06:10:56
编辑 锁定
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中文名
setgraphbufsize
功 能
 改变内部图形缓冲区的大小
语    言
C\C++
性    质
函数

目录

setgraphbufsize简介

编辑
函数名: setgraphbufsize
用 法: unsigned far setgraphbufsize(unsigned bufsize);

setgraphbufsize程序例

编辑
#include <graphics.h>
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>
#define BUFSIZE 1000 /* internal graphics buffer size */
int main(void)
{
/* request auto detection */
int gdriver = DETECT, gmode, errorcode;
int x, y, oldsize;
char msg[80];
/* set the size of the internal graphics buffer */
/* before making a call to initgraph. */
oldsize = setgraphbufsize(BUFSIZE);
/* 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 */
}
x = getmaxx() / 2;
y = getmaxy() / 2;
/* output some messages */
sprintf(msg, "Graphics buffer size: %d", BUFSIZE);
settextjustify(CENTER_TEXT, CENTER_TEXT);
outtextxy(x, y, msg);
sprintf(msg, "Old graphics buffer size: %d", oldsize);
outtextxy(x, y+textheight("W"), msg);
/* clean up */
getch();
closegraph();
return 0;
}
词条标签:
计算机学