PRODUCT  :  Borland C++                            NUMBER  :  720
  VERSION  :  2.0
       OS  :  DOS
     DATE  :  October 19, 1993                         PAGE  :  1/3

    TITLE  :  Printing a Graphics Screen to an Epson Printer




  /************************************************************

   Name           PrintImage

   Description    Prints an image to an Epson compatible printer,
                  ala GetImage and PutImage.

   Syntax         printimage(int x1, int y1, int x2, int y2);

  ************************************************************/

  #include <graphics.h>
  #include <stdio.h>
  #include <io.h>

  #define         ESC             '\x1B'
  #define         LPT1            0
  #define         LPT2            1
  #define         prn_putc(x)     biosprint(0,(x),LPT1)

  /*
      Sets Epson printer to bit image mode.
      N is the number of bytes to print.
  */
  static void bitImage(int N)
  {
      register int        n1, n2;

      n2 = N >> 8;
      n1 = N - (n2 << 8);

      prn_putc(ESC);
          prn_putc('*');
          prn_putc(4); /* K=standard density,
                          L=double density,
                          Y=dbl speed + dbl density,
                          Z=quad density */
      prn_putc(n1);
      prn_putc(n2);
  }

  /*
      Get pixels from the screen and convert them to













  PRODUCT  :  Borland C++                            NUMBER  :  720
  VERSION  :  2.0
       OS  :  DOS
     DATE  :  October 19, 1993                         PAGE  :  2/3

    TITLE  :  Printing a Graphics Screen to an Epson Printer




      the printer's pin order.
  */
  static unsigned char getScrBits(int x, int y)
  {
      unsigned char firePins;

      firePins  = (getpixel(x, y++)==0)? 0: 0x80;
      firePins |= (getpixel(x, y++)==0)? 0: 0x40;
      firePins |= (getpixel(x, y++)==0)? 0: 0x20;
      firePins |= (getpixel(x, y++)==0)? 0: 0x10;
      firePins |= (getpixel(x, y++)==0)? 0: 0x08;
      firePins |= (getpixel(x, y++)==0)? 0: 0x04;
      firePins |= (getpixel(x, y++)==0)? 0: 0x02;
      firePins |= (getpixel(x, y  )==0)? 0: 0x01;

      return      firePins;
  }

  /*
  Prints the image
  */

  int printimage(int x1, int y1, int x2, int y2)
  {
      int         x, y, width, height;

      width  = x2-x1;
      height = y2-y1;

      for (y=0; y<height; y+=8)
      {
          /*  Initialize line spacing to 7/72" */
          prn_putc(ESC); prn_putc('1');

          bitImage(width);

          for (x=0; x<width; x++)
              prn_putc(getScrBits(x,y));

          prn_putc('\n');
      }
      return      0;
  }













  PRODUCT  :  Borland C++                            NUMBER  :  720
  VERSION  :  2.0
       OS  :  DOS
     DATE  :  October 19, 1993                         PAGE  :  3/3

    TITLE  :  Printing a Graphics Screen to an Epson Printer




  /*
  Initialize graphics screen
  */

  void InitGraf(int *hor, int *ver)
  {
          int gmode, i;
          int gdriver = DETECT;
          struct viewporttype vp;

          initgraph(&gdriver, &gmode, "");
          getviewsettings( &vp );
          *hor = (vp.right - vp.left);
          *ver = (vp.bottom - vp.top);
          for (i=0; i<(*hor); i+=10) line(i,0,i,*ver);
          for (i=0; i<(*ver); i+=10) line(0,i,*hor,i);
  }

  main()
  {
    int h, v;

    InitGraf(&h,&v);

    printimage(0,0,h,v);

    closegraph();
    return 0;
  }

  DISCLAIMER: You have the right to use this technical information
  subject to the terms of the No-Nonsense License Statement that
  you received with the Borland product to which this information
  pertains.