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 Provide a callback to allow custom drawing of the selection/cropping		  New Topic  Reply to Topic
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jiang_jiji

China
4 Posts
Posted - Mar 31 2026 :  04:49:41  Show Profile  Reply
I'm currently building an image editing application similar to https://www.canva.com

If I want to customize the selection/cropping effect, I have to modify the source code directly, which is not convenient for future updates or maintaining software.

Could you consider providing a callback function to allow custom rendering of the selection/cropping effect?

For example, something like this:

TIECropToolInteraction.OnBeforePaintBackBuffer
TIECropToolInteraction.OnPaintBackBuffer


Selection Effect:


Crop Effect:

xequte

39364 Posts
Posted - Mar 31 2026 :  19:21:03  Show Profile  Reply
Hi

We could add before and after paint items to the OnUserInteraction event:

http://www.imageen.com/help/TImageEnView.OnUserInteraction.html

Would that work?


Nigel
Xequte Software
www.imageen.com
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