# Edit Volume Rendering Module

**URL:** <https://discourse.slicer.org/t/edit-volume-rendering-module/25051>\
**Category:** Support\
**Created:** [September 2, 2022, 9:16am UTC](https://discourse.slicer.org/t/edit-volume-rendering-module/25051 "2022-09-02T09:16:37Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![user4](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/user4/32/13172_2.png) [@user4](https://discourse.slicer.org/u/user4)\
**Post date:** [September 2, 2022, 9:16am UTC](https://discourse.slicer.org/t/edit-volume-rendering-module/25051/1 "2022-09-02T09:16:37Z")

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Hi,all.I want to add some functions in volume rendering module and create some new widgets.But this C++ built-in module is a .dll file and I have no acess.I wonder if this module is not open source? Is there a way to get in  
Thanks for your attention.

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**Author:** ![cpinter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/cpinter/32/7995_2.png) [@cpinter](https://discourse.slicer.org/u/cpinter)\
**Post date:** [September 2, 2022, 10:03am UTC](https://discourse.slicer.org/t/edit-volume-rendering-module/25051/2 "2022-09-02T10:03:59Z")

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Please see here [Contributing to Slicer — 3D Slicer documentation](https://slicer.readthedocs.io/en/latest/developer_guide/contributing.html)