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Date Posted: 23:32:29 09/23/02 Mon
Author: Brian Lowe
Subject: Re: Drop shadow
In reply to: Todd Cary 's message, "Re: Drop shadow" on 20:24:55 09/22/02 Sun

Well, you're beyond my expertise there, although I found this via Earl Glynn's site:

<a rel=nofollow target=_blank href="http://www.cogs.susx.ac.uk/users/davidy/teachvision/vision2.html">http://www.cogs.susx.ac.uk/users/davidy/teachvision/vision2.html</a>

>I saw an example using another image library where
>Convolution is used, and I do not have enough
>background in image manipulation to know exactly what
>that is.
>
>Todd
>
>>What kind of drop shadow do you want? The easiest is
>>to put TImageScrollBox into top left of a TPanel that
>>is slightly bigger.
>>
>>Next easiest would be to put a gradient control to the
>>right and bottom of the TImageScrollBox.
>>
>>Next would be to put 2 TImages to the right and bottom
>>that contain a shadowed bitmap. Set it to transparent
>>so whatever is underneath shows through the faded
>>portion of the shadow.
>>
>>Finally, you could create a TImageScrollBox descendent
>>that has an oversized canvas and draw the 3D shadow
>>yourself. If you want to see code for drawing on a
>>TBitmap in memory, download the source for THotButton
>>at
>>
>><a rel=nofollow target=_blank href="http://www.belleson.com/sourcecode/hotbutton.html">http://www.belleson.com/sourcecode/hotbutton.html</a>
>>
>>The code in procedure THotButton.MakeHotButton(..)
>>does a very basic draw of white pixels at top and
>>left, gray pixels at bottom and right.
>>
>>Good luck,
>>
>>Brian Lowe
>>Belleson Corp
>>
>>>I would like to create a drop shadow around an image
>-
>>>give the image a 3D look. How can this be done?
>>>
>>>Many thanks.....
>>>
>>>Todd

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