Re: Creating / mimicing the XP shutdown grey fade...

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#3949

From: Bob Gonder
Date: Thu, 06 Apr 2006 21:52

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Mike Collins wrote:

>Hay JD, thanks for post, was so busy that I forgot to get back to you. 
>Basically I combined what you had posted with some code that I saw from 
>CodeProject.
>
>Firstly I captured the destop with hDC = ::GetDC(0);  I then tried to 
>gradually fade this to the gray slate final colour but it ended up looking 
>crap, stagged and jurkey so when straight to the gray - it looks ok but if 
>you have any code that achieves that I want, I'd love to have a look.

One method is to pixelate-to-grayish.
turn every eighth pixel to gray or black (stagger each line)
turn every 4th, end with every 2nd.

Other method is as JD posted, trend each pixel to r=g=b=128.

One that comes to mind;

#define	AdjustColor( c )	(( 128-(c) )/4)

    pixel.red += AdjustColor(pixel.red);   // move 1/4 towards gray

I think there will be some sign issues with that
There might also be color issues that I think JD's code handled with
the varying rates depending on R,G,B.

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From: Bob Gonder <notbg@notmindspring.invalid>
Newsgroups: borland.public.cppbuilder.nativeapi
Subject: Re: Creating / mimicing the XP shutdown grey fade...
Date: Thu, 06 Apr 2006 14:52:44 -0700
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