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 TImageEnView - mouse wheel / zoom behavior		  New Topic  Reply to Topic
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DiBase

Germany
5 Posts
Posted - Mar 24 2022 :  17:36:56  Show Profile  Reply
Standard behavior when using mouse wheel (over a TImageEnView component) is:

- mouse wheel up: zoom out
- mouse wheel down: zoom in

This is opposite to scroll behavior of standard Windows picture viewer.

Is there an easy way to invert the mouse wheel action?

- Dirk from Hamburg/Germany

P.S.: ImageEn 9.2.5

xequte

39279 Posts
Posted - Mar 24 2022 :  20:17:28  Show Profile  Reply
Please use:

// Invert the direction to resemble that of Windows Explorer
ImageEnView1.MouseWheelParams.InvertDirection := True;


https://www.imageen.com/help/TIEView.MouseWheelParams.html

Nigel
Xequte Software
www.imageen.com
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DiBase

Germany
5 Posts
Posted - Mar 29 2022 :  14:38:10  Show Profile  Reply
Thanks, Nigel.

It works now, but only when I add the line in my source code.
When changing the parameter in Object Inspector of IDE it has no effect.

- Dirk
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xequte

39279 Posts
Posted - Apr 03 2022 :  19:23:22  Show Profile  Reply
Hi Dirk

You are saying that when you change InvertDirection of MouseWheelParams for a TImageEnView in the Object Inspector it has no effect?

I cannot reproduce that. When you close and reopen the project has the InvertDirection property been reset?

It may be an issue in v9.2.5.

Nigel
Xequte Software
www.imageen.com
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