COLOR inquiry

[Fred Katzel]

Hi

Recently, I noticed that you can't use BLACK as a foreground
color when using SCREEN 12. Why?

Fred K

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[Donald Darden]

Actually, the black designator (0) does not work for the foreground
color with any background color spedified for graphics mode SCREEN
12. Some of the other foreground and background color combinations
aren't too swift either.

I tried to find out more in the PB documentation and performing an
online search, but found nothing that would help. What comments I
could find tended to suggest that SCREEN 12 has access to 16 colors
from a pallette of 64. Sombody may have decided that a transparent
color would be more useful than black. Whether there is a way to
overwrite the pallette selections was not indicated.

SCREEN 12 imposes VGA limitations on your graphics code, so you can
see that it is pretty dated. There is also a Mode 13 and a Mode X,
but in all probability you would be better served if you search the
web for extended graphics libraries that would give you added
features and functionality as well.

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Old Navy Chief, Systems Engineer, Systems Analyst, now semi-retired

[Hans Rasmussen]

You must first use the PALETTE statement.
I don't know the technical reason for this.
The following code produces black text on red :

SCREEN 12
PALETTE 1,0
COLOR 1,12
CLS
PRINT "PowerBasic"

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