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Date Posted: 19:30:46 09/06/00 Wed
Author: Michel
Subject: Re: Big black square
In reply to: Andy Radchenko 's message, "Big black square" on 13:39:19 09/06/00 Wed

Hi Andy,

I tried to reproduce the problem without success. When the zoom value is changed in the TImageScrollBox, the TResizeTransform is used. This in turn, calls the windows API function,
SetStretchBltMode, to resize the graphic. I would think that with a certain lower zoom threshold the function does not work. This is probably dependent on video card/driver/OS, just like with the limitation with large images.

Best regards,


> Hello there!
> I'm looking for some help. ImageBox works fine with
> color images, however I have to show to a customer
> scanned image of a paper drawing. ImageBox shows image
> correctly with a zoom factor above about 6%. When zoom
> factor is below this level - all I got is the ugly
> black rectangle. Any ideas?
> Thanks beforehand
> Andy

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