Couldn't Register customized DisplayableManager to extension module

Development
1

Hi, I tried to customize a slice DisplayableManager and register it to vtkMRMLSliceViewDisplayableManagerFactory. But after successfully compiling our extension, When starting the 3D slicer, it will report “/Slicer/Slicer-SuperBuild-Debug/VTK/Common/Core/vtkDebugLeaks.cxx, line 272, Deleting unknown object: vtkMRMLLiverResectionsDisplayableManager”
And the following error is “/Slicer/Libs/MRML/DisplayableManager/vtkMRMLDisplayableManagerFactory.cxx, line 136, vtkMRMLSliceViewDisplayableManagerFactory (0x555584f96130): RegisterDisplayableManager - vtkMRMLLiverResectionsDisplayableManager is not a displayable manager. Failed to register”

For creating customized DisplayableManager I referenced slicer markups’ MRMLDM

Could you share your thoughts on possible reasons lead this error? Thank you so much.

2

If you want to create custom markups then you don’t need to implement a custom displayable manager. See complete example in ExtraMarkups extension.

Also check out the Liver extension’s advanced liver resection planning and visualization tools already exist in Slicer. Maybe it is a better starting point.

3

Did you initiate and register your displayable manager in a module source file?

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4

Hi, Thank you for your input! Actually, I am one of the Slicer-Liver extension developers, I would like to add a new feature for visualizing the cutting lines between the resection surface and 3D Slicer slice views. I thought it might be easier to do it within DisplayableManager.

5

Thank you so much for pointing this out, I did ignore the initiating process! Now everything works fine!

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