C语言函数—segread

函数名

sector

功 能

画并填充椭圆扇区

用 法

void far sector(int x, int y, int stangle, int endangle);

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 midx, midy, i; 
   int stangle = 45, endangle = 135; 
   int xrad = 100, yrad = 50; 

   /* initialize graphics and local variables */ 
   initgraph(&gdriver, &gmode, ""); 

   /* read result of initialization */ 
   errorcode = graphresult(); 
   if (errorcode != grOk)  /* an error occurred */ 
   { 
      printf("Graphics error: %sn", grapherrormsg(errorcode)); 
      printf("Press any key to halt:"); 
      getch(); 
      exit(1); /* terminate with an error code */ 
   } 

   midx = getmaxx() / 2; 
   midy = getmaxy() / 2; 

   /* loop through the fill patterns */ 
   for (i=EMPTY_FILL; i<USER_FILL; i++) 
   { 
      /* set the fill style */ 
      setfillstyle(i, getmaxcolor()); 

      /* draw the sector slice */ 
      sector(midx, midy, stangle, endangle, xrad, yrad); 

      getch(); 
   } 

   /* clean up */ 
   closegraph(); 
   return 0; 
} 
  

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