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8bit color support
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Alice Averbukh
-- Moved from [review-ngdocs] to [ngfx-drawing] by Alex Lowe <Click here to reveal e-mail address> --

Hi,I hope I'm posting to the right group and that someone from the Microsoft personnel can actually help me out.
I can't find anywhere in the documentation what support is offered for 8bit color.
I've created a little app in C# to display 256 shades of gray and although it works fine for 32 and 16 bit color,
when I switch to 8bit - it appears dithered.

I've tried using Color.FromArgb() with and withoug the alfa value -
colors are dithered;
ColorTraslator.FromHtml("hex value") - dithered;
when I use ColorTraslator.FromOle() (0-256) - all colors get mapped to
black.

I wonder if anyone can comment on what may be going on and what is a
possible solution for this. Is this a bug in .Net or is there a way to set up rendering hints or do something else of the sort?
I really need to resolve this quickly.

thanks!
Alice
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Chris Garrett
Hi,

Do a search on MSDN - there are a couple of knowledge base articles about
indexed / 8bit colour

Chris

----- Original Message -----
From: "Alice Averbukh" <Click here to reveal e-mail address>
To: "ngfx-drawing" <Click here to reveal e-mail address>
Sent: Friday, August 09, 2002 4:41 PM
Subject: [ngfx-drawing] 8bit color support

> -- Moved from [review-ngdocs] to [ngfx-drawing] by Alex Lowe
<Click here to reveal e-mail address> --
[Original message clipped]
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Chris Garrett
This might help
http://support.microsoft.com/default.aspx?scid=kb;en-us;q319061
http://support.microsoft.com/default.aspx?scid=kb;en-us;q319591

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----- Original Message -----
From: "Chris Garrett" <Click here to reveal e-mail address>
To: "ngfx-drawing" <Click here to reveal e-mail address>
Sent: Monday, August 12, 2002 9:49 AM
Subject: [ngfx-drawing] Re: 8bit color support

[Original message clipped]
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Pierre Fillion
Simply use this function (Convert to C# if you need)

'Converts an hex value to a .Net color
Public Function HexToColor(ByVal ColorValue As Integer) As Color

Return Color.FromArgb(ColorValue Mod &H100, (ColorValue / &H100) Mod &H100, (ColorValue / (&H100 ^ 2)) Mod &H100)

End Function

--------------------------------
From: Pierre Fillion
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System.Drawing.Color




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