home *** CD-ROM | disk | FTP | other *** search
- The following QuickBASIC 4.5 program will decompress and show most 256
- color GIF pictures. It works much faster compiled than from the QuickBASIC
- environment, but still, it is very slow compared to its machine language
- brothers.
- The program was written for the 320x200x256 mode, but that can be easily
- changed. All of the pixels are plotted with one subroutine- the PLOT
- subprogram. (Don't forget to change the LINE (0,0)-(319,199),backgroung,BF
- to whatever resolution mode your changing it to. For instance, in screen 12
- you would change the (319,199) to (639,479).)
- The program doesn't handle interlaced pictures- mainly because I was too
- lazy to implement it! Refer to the documentation for the GIF87a or GIF89a
- protocol for full information on the GIF protocol.
-
- (Note: The program also works fine with MS-DOS 5's QBASIC)
-
- If you have any questions or complaints, then write/call me at:
-
- Rich Geldreich
- 410 Market St.
- Gloucester City, New Jersey 08030
- (609)-456-0721
-
- December 22, 1991
-
-