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C/C++ Source or Header  |  1991-05-26  |  594 b   |  24 lines
  1. /* ==============  Program Description  ============= */
  2. /*   program name : ch24_25.c                         */
  3. /*   getpixel() application.                          */
  4. /* ================================================== */
  5. #include  <graphics.h>
  6.  
  7. void main()
  8. {
  9.     int     driver = DETECT,mode;
  10.     int     i;
  11.  
  12.     initgraph(&driver,&mode,"c:\\borlandc\\bgi");
  13.     line(100,100,500,100);
  14.     for ( i = 20; i < 300; i++ )
  15.     if ( getpixel(300,i) == WHITE )
  16.     {
  17.        setcolor(BLUE);
  18.        circle(300,i,5);
  19.     }
  20.     else
  21.        putpixel(300,i,WHITE);
  22.     getch();
  23.     closegraph();
  24. }