# SlicerQR Development

**URL:** <https://discourse.slicer.org/t/slicerqr-development/15954>\
**Category:** Development\
**Tags:** registration, build, segmentation, dicom, python\
**Created:** [February 11, 2021, 3:59pm UTC](https://discourse.slicer.org/t/slicerqr-development/15954 "2021-02-11T15:59:22Z")\
**Posts on this page:** 1\
**Showing post:** 54

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**Author:** ![spycolyf](https://avatars.discourse-cdn.com/v4/letter/s/f17d59/32.png) [@spycolyf](https://discourse.slicer.org/u/spycolyf)\
**Post date:** [February 26, 2021, 10:47pm UTC](https://discourse.slicer.org/t/slicerqr-development/15954/54 "2021-02-26T22:47:18Z")

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@jamesobutler @lassoan @pieper @jcfr

Thank you @jamesobutler. Pleased to meet you. Yes, I am using the Slicer Custom App framework, here is a picture of what I mean by reference markers. Also, I need to lighten up the background colors of the textboxes containing the slice locations in the upper right corner of each image pane. Or better still, make the text white.

 ![SlycerQREADS_RefMarkers](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/0/2/02d2bd8763d7f618d09a2d7dc3bb84b39b7417a0.jpeg)

My managers are saying that the reference markers are too dark and are sometimes difficult to see. I’m just learning how to program Slicer. Here is the Python code that creates the reference markers…

Here’s some code setting them visible. Is there a reference manual somewhere, or a way to discover available Slicer methods for certain objects? Is there an IDE with intellisense?

```python
  def setReferenceMarkersVisible(visible):
         for sliceLogic in slicer.app.applicationLogic().GetSliceLogics():
              sliceLogic.GetSliceCompositeNode().SetSliceIntersectionVisibility(visible)
              sliceLogic.GetSliceNode().SetWidgetVisible(visible)

```

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