Q30364: _remappalette() Does Not Work on Hercules or Olivetti Cards

Article: Q30364
Product(s): See article
Version(s): 5.10 6.00 6.00a
Operating System(s): MS-DOS
Keyword(s): ENDUSER | s_quickc | mspl13_c
Last Modified: 15-JAN-1991

Question:

When I try to remap the default black background color to white,
nothing changes on my screen. I have tried _remappalette() and
_remapallpalette(), but neither work. I am working with a Hercules
monochrome graphics card.

Response:

These functions do not support the Hercules card. On page 488 of the
"Microsoft C Version 5.10 Run-time Library Reference Manual," there is
a note stating that _remappalette() and _remapallpalette() work only
with an EGA or VGA card. In the C 6.00 and 6.00a online help, there is
a note explaining that either of these functions will generate an
error if they are called on a system with an Olivetti and Hercules
display adapter.

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