# Is there documentation or info on Clarion's UI stack/rendering

**URL:** <https://clarionhub.com/t/is-there-documentation-or-info-on-clarions-ui-stack-rendering/9427>\
**Category:** questions\
**Tags:** windows\
**Created:** [October 13, 2026, 2:38pm UTC](https://clarionhub.com/t/is-there-documentation-or-info-on-clarions-ui-stack-rendering/9427 "2026-10-13T14:38:23Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ThaDaSoft](https://clarionhub.com/user_avatar/clarionhub.com/thadasoft/32/3743_2.png) [@ThaDaSoft](https://clarionhub.com/u/ThaDaSoft)\
**Post date:** [October 13, 2026, 2:38pm UTC](https://clarionhub.com/t/is-there-documentation-or-info-on-clarions-ui-stack-rendering/9427/1 "2026-10-13T14:38:23Z")

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Based on how clarion apps look, I take it that Clarion calls into the API's used for WinForms to render UI, but I am not completely sure and can't find any real evidence on this, does anyone know?

And if it currently calls into API's used for WinForms, could we expect Clarion to eventually move over to WinUI 3? (The most modern UI framework for Windows)

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**Author:** ![RchdR](https://clarionhub.com/letter_avatar_proxy/v4/letter/r/d78d45/32.png) [@RchdR](https://clarionhub.com/u/RchdR)\
**Post date:** [October 13, 2026, 9:46pm UTC](https://clarionhub.com/t/is-there-documentation-or-info-on-clarions-ui-stack-rendering/9427/2 "2026-10-13T21:46:27Z")

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This post might help.

> [@Replacement for Clarion's browse grid control](https://clarionhub.com/t/replacement-for-clarions-browse-grid-control/9211/2):
>
> I would look at using native API calls for controls and then have a class to bind the data from the filemanager/files to the window control(s) on a per thread basis, per control instance basis. A class would be ideal because of the properties it brings to the table, like instantiation, isolation of variables, and reusability. Some GUI controls will have similar properties with other GUI controls, eg the scroll bar, added to some controls, in both horizontal and vertical format. This is why I…

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<div class="post-metadata">

**Author:** ![ThaDaSoft](https://clarionhub.com/user_avatar/clarionhub.com/thadasoft/32/3743_2.png) [@ThaDaSoft](https://clarionhub.com/u/ThaDaSoft)\
**Post date:** [October 14, 2026, 7:25am UTC](https://clarionhub.com/t/is-there-documentation-or-info-on-clarions-ui-stack-rendering/9427/3 "2026-10-14T07:25:12Z")

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So as I thought, it's using the Win32 UI library API's directly, just like WinForm does