bar

功 ：畫二維形圖

 ： void far bar(int left,int top,int right,int bottom);

程序例：

#include

#include

#include

#include

int main(void)

{

int gdriver = DETECT,gmode,errorcode;

int midx,midy,i;

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

errorcode = graphresult();

if (errorcode != grOk)

{

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

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

getch();

exit⑴；

}

midx = getmaxx() / 2;

midy = getmaxy() / 2;

for (i=SOLID_FILL; i

{

setfillstyle(i,getmaxcolor());

bar(midx-50,midy-50,midx+50,

midy+50）；

getch();

}

closegraph();

return 0;

}