GNU bug report logs - #10397
[PATCH] Under Remote Desktop, NUMCOLORS is unreliable; workaround

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Package: emacs;

Reported by: Daniel Colascione <dancol <at> dancol.org>

Date: Thu, 29 Dec 2011 14:10:02 UTC

Severity: normal

Tags: patch

Fixed in version 24.3

Done: Glenn Morris <rgm <at> gnu.org>

Bug is archived. No further changes may be made.

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From: Juanma Barranquero <lekktu <at> gmail.com>
To: Daniel Colascione <dancol <at> dancol.org>
Cc: 10397 <at> debbugs.gnu.org
Subject: bug#10397: [PATCH] Under Remote Desktop, NUMCOLORS is unreliable; workaround
Date: Fri, 30 Dec 2011 04:07:48 +0100

On Thu, Dec 29, 2011 at 23:59, Daniel Colascione <dancol <at> dancol.org> wrote:

> What about this: we'll distrust any NUMCOLORS response less than 256.
> You'll never use direct color with a bit depth that small, so any answer
> in that range must be bogus.

Hmm. Shouldn't in fact GetDeviceCaps (hdc, NUMCOLORS) always be <= 256?

According to http://msdn.microsoft.com/en-us/library/dd144877(v=vs.85).aspx

  NUMCOLORS
  Number of entries in the device's color table, if the device has a
color depth of no more than 8 bits per pixel. For devices with greater
color depths, 1 is returned.

(It says "1", but it's a typo for "-1".)

    Juanma
This bug report was last modified 8 years and 240 days ago.

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