# WSL Slicer image overlay selector

**URL:** https://discourse.slicer.org/t/wsl-slicer-image-overlay-selector/32132
**Category:** Support
**Tags:** visualization
**Created:** [October 10, 2023, 10:35am UTC](https://discourse.slicer.org/t/wsl-slicer-image-overlay-selector/32132 "2023-10-10T10:35:15Z")
**Posts on this page:** 6
**Page:** 1

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### Author: ![IVarha](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ivarha/32/66704_2.png) [@IVarha](https://discourse.slicer.org/u/IVarha)
#### Post date: [October 10, 2023, 10:35am UTC](https://discourse.slicer.org/t/wsl-slicer-image-overlay-selector/32132/1 "2023-10-10T10:35:15Z")

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I am trying to select overlay between images on WSL, hovewer the selector does not work for me

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/1/d/1d2ad55f6b2d9d3383e33f144ce141a29fb4872d.png)

Operating system: Windows / WSL Fedora /WSL ubuntu  
Slicer version: 5.4  
Expected behavior: I am able to overlay two images in slicer  
Actual behavior: selector for second image don’t work

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### Author: ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [October 10, 2023, 10:36am UTC](https://discourse.slicer.org/t/wsl-slicer-image-overlay-selector/32132/2 "2023-10-10T10:36:23Z")

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You need to click the small double-arrow button in the popup to choose a foreground volume.

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### Author: ![IVarha](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ivarha/32/66704_2.png) [@IVarha](https://discourse.slicer.org/u/IVarha)
#### Post date: [October 10, 2023, 10:37am UTC](https://discourse.slicer.org/t/wsl-slicer-image-overlay-selector/32132/3 "2023-10-10T10:37:16Z")

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The problem is that it is unclickable there

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### Author: ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [October 10, 2023, 10:39am UTC](https://discourse.slicer.org/t/wsl-slicer-image-overlay-selector/32132/4 "2023-10-10T10:39:02Z")

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You can use View Controllers module then.

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### Author: ![IVarha](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ivarha/32/66704_2.png) [@IVarha](https://discourse.slicer.org/u/IVarha)
#### Post date: [October 10, 2023, 10:46am UTC](https://discourse.slicer.org/t/wsl-slicer-image-overlay-selector/32132/5 "2023-10-10T10:46:21Z")

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Thanks that solution works for my case

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### Author: ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [October 10, 2023, 10:54am UTC](https://discourse.slicer.org/t/wsl-slicer-image-overlay-selector/32132/6 "2023-10-10T10:54:06Z")

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Now that the error cause of this problem is most likely WSLg’s limited support for scaling - see for example [HiDPI Scaling · Issue #388 · microsoft/wslg · GitHub](https://github.com/microsoft/wslg/issues/388)

Your may be able to fix it by enabling/disabling scaling in the operating system and/or in the application.