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Turbo C 2.0、Borland C++库函数及用例(28) close(handle);
return 0;
}
函数名: fillellipse
功 能: 画出并填充一椭圆
用 法: void far fillellipse( int x, int y, int xradius,
int yradius );
程序例:#include <graphics.h>
#include <conio.h>int main(void)
{
int gdriver = DETECT, gmode;
int xcenter, ycenter, i;
initgraph(&gdriver,&gmode,"");
xcenter = getmaxx() / 2;
ycenter = getmaxy() / 2; for (i=0; i<13; i++)
{
setfillstyle(i,WHITE);
fillellipse(xcenter,ycenter,100,50);
getch();
}
closegraph();
return 0;
}
函数名: fillpoly
功 能: 画并填充一个多边形
用 法: void far fillpoly( int numpoints,
int far *polypoints );
程序例:#include <graphics.h>
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>int main(void)
{
/* request auto detection */ int gdriver = DETECT, gmode, errorcode;
int i, maxx, maxy; /* our polygon array */
int poly[8]; /* initialize graphics, 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 */
}
maxx = getmaxx();
maxy = getmaxy(); poly[0] = 20; /* 1st vertext */
poly[1] = maxy / 2;
poly[2] = maxx - 20; /* 2nd */
poly[3] = 20; poly[4] = maxx - 50; /* 3rd */
poly[5] = maxy - 20;
/*
4th vertex. fillpoly automatically
closes the polygon.
*/
poly[6] = maxx / 2;
poly[7] = maxy / 2; /* loop through the fill patterns */
for (i=EMPTY_FILL; i<USER_FILL; i++)
{
/* set fill pattern */
setfillstyle(i, getmaxcolor()); /* draw a filled polygon */
fillpoly(4, poly);
getch();
} /* clean up */
closegraph();
return 0;
}
函数名: findfirst
功 能: 搜索磁盘目录; 取得下一个匹配的findfirst模式的文件
用 法: int findfirst( char *pathname, struct ffblk *ffblk,
int attrib);
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