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-
- DUMPSCR
- -------
-
- This is similar to the DOS external command GRAPHICS. After
- install, you can dump CGA, EGA, VGA or HERCULES graphic screen to
- HP, Epson or IBM compatible printer by press the Shift-PrintScreen
- key. Since the program is a TSR, it should be as small as
- possible. Safety check is at minimum since the program is used
- only occasionally. I have compiled the program to the following
- names:
-
- CGA2HP, EGA2HP, VGA2HP, HER2HP, CGA2EP, EGA2EP, VGA2EP, HER2EP.
-
- The first three letters stand for screen mode: CGA (640x200), EGA
- (640x350), VGA (640x480) or HERCULES (720x348). The last 2 letters
- for printer: HP=Hewlett-Packard and EP=Epson/IBM. Run one of them
- according to your hardware.
-
- You should press SHIFT-PRINTSCREEN only when you are in the correct
- graphics mode. Warning: in case of wrong printer or wrong screen
- mode (CGA2?? works fine in CGA 320x200 mode and EGA2?? work also in
- VGA mode), unexpected printout will happen. I have test them on
- Deskjet 500, Laserjet II, Laserjet III, Epson LQ850 and TOSHIBA
- P351 in IBM emulation mode.
-
- Despite many of screen capture programs (including win3) available,
- all of them have their limitations. Here are what in my program:
-
- * Picture ratio: Screen and printer have different ratio
- (length/width). For CGA mode, I print two dots for every one
- vertical dots on screen. VGA has the best ratio (about 1.32).
-
- * Picture resolution: Lower resolution mode are used on printers,
- which usually have much higher resolution than screen.
-
- * Page centering: Can be modified only with source code.
-
- * Colors: Most commercial screen dump program use shades to
- represent color. Sometimes it is better to print background as
- white and any other color as black on printer (one of motivation of
- my program). Since it is unreliable to detect background, I simply
- use black as background color.
-
- Please upload this program to any BBS in the original form. The
- *.COM programs are free. If you can contribute with $10, I will
- send you program source code listing and compiler instructions
- (Turbo C, reads and writes directly to graphics card and printer).
- I can also send it through internet e-mail address if you want.
- With $12, I will send the code on disk (5-1/4 or 3-1/2).
-
- Yijun Ding, 348 S. Pacific Ave, Pittsburgh PA 15224
- (412)361-0858
-