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Date Posted: 07:36:28 02/08/01 Thu
Author: Michel
Subject: Re: Detect modification to image
In reply to: Angelo 's message, "Detect modification to image" on 08:37:40 02/07/01 Wed


Hi Angelo,

There is not any uniform way to detect if an image has changed. The image may be changed in a few ways:

LoadFromFile
LoadFromStream
Assign a graphic to the Graphic property (which is what is usually done when scanning an image)

The OnRedraw event may be used to check more generically when the image changes. The graphic loaded in the image scroll box is passed to the OnRedraw event. So one possibility is the look at the size and maybe some other attributes on the OnRedraw event to determine if the image has changed.

I will add to my "todo" list to add another event handler which will trigger when the source graphic is changed.

Best regards,

Michel


>How can i detect if an image (loaded or acquiring by
>scanner) in an imagescrollbox has changed?

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