# Demos

**URL:** https://forum.techsoft3d.com/c/help/demos/33.md

[Latest](https://forum.techsoft3d.com/latest.md) · [Categories](https://forum.techsoft3d.com/categories.md) · [Tags](https://forum.techsoft3d.com/tags.md)

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## [About the Demos category](https://forum.techsoft3d.com/t/about-the-demos-category/340)

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**Author:** [@Jonathan](https://forum.techsoft3d.com/u/Jonathan)\
**Replies:** 0

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## [2D Drawing Viewer Source Code](https://forum.techsoft3d.com/t/2d-drawing-viewer-source-code/907)

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**Author:** [@ricky.johnson](https://forum.techsoft3d.com/u/ricky.johnson)\
**Replies:** 0\
**Last updated:** [July 26, 2022, 5:39pm UTC](https://forum.techsoft3d.com/t/2d-drawing-viewer-source-code/907 "2022-07-26T17:39:50Z")

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Do you have a need for a 2D drawing viewer within your application? We have developed a demo to show off some of the capabilities for 2D drawing viewers when built with HOOPS Communicator. Here is a public GitHub reposit…

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## [Animation Engine](https://forum.techsoft3d.com/t/animation-engine/458)

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**Author:** [@3146911347](https://forum.techsoft3d.com/u/3146911347)\
**Replies:** 3\
**Last updated:** [September 4, 2021, 12:41pm UTC](https://forum.techsoft3d.com/t/animation-engine/458 "2021-09-04T12:41:15Z")

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How can I get the animation code example at the address below：

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## [Can't delete my model files](https://forum.techsoft3d.com/t/cant-delete-my-model-files/263)

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**Author:** [@yuyeon.oh](https://forum.techsoft3d.com/u/yuyeon.oh)\
**Replies:** 3\
**Last updated:** [January 25, 2021, 2:12am UTC](https://forum.techsoft3d.com/t/cant-delete-my-model-files/263 "2021-01-25T02:12:30Z")

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I deleted my model files from left side bar. After reloading web demo viewer, I can see the deleted models remain.

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## [My HOOPS Demo Viewer license has expired, now what?](https://forum.techsoft3d.com/t/my-hoops-demo-viewer-license-has-expired-now-what/248)

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**Author:** [@Jonathan](https://forum.techsoft3d.com/u/Jonathan)\
**Replies:** 0\
**Last updated:** [January 14, 2021, 8:00am UTC](https://forum.techsoft3d.com/t/my-hoops-demo-viewer-license-has-expired-now-what/248 "2021-01-14T08:00:00Z")

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It is possible to request a new HOOPS Demo Viewer license from support.hv@techsoft3d.com.

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## [Demo.techsoft3d.com FAQ](https://forum.techsoft3d.com/t/demo-techsoft3d-com-faq/350)

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**Author:** [@Jonathan](https://forum.techsoft3d.com/u/Jonathan)\
**Replies:** 0\
**Last updated:** [November 12, 2019, 8:00am UTC](https://forum.techsoft3d.com/t/demo-techsoft3d-com-faq/350 "2019-11-12T08:00:00Z")

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Are there known issues of the demo? Changing between different sheets in DWG files. Microsoft Edge is not currently supported. Once Edge begins using the Chromium engine it will be. Selecting all items of a sub-assembly…