Qt5 build : a few hiccups

After using the Qt5 build for one week, here are some minor problems.

  1. Whenever an item is selected in the Fiducial/ROI/Ruler tool, the items get duplicated to an certain number of items that I didn’t count.

  2. In Volume Rending module, the items of the ‘View’ combobox are no longer checkable.

  3. Switching to module ‘SceneViews’ crashes Slicer :

  • Switch to module: “SceneViews”
  • qSlicerSceneViewsModuleWidgetPrivate::setupUi - Capture link not implemented with Qt5
  • qSlicerSceneViewsModuleWidgetPrivate::setupUi - Restore scroll bar position not implemented with Qt5
    As it says, it has yet to be implemented.

All these are found on today’s build after ‘git pull’ (2017-08-26).

I think developers might be interested in this post.



Thanks a lot for reporting - it’s very useful. I’ve added these issues to the Qt5 migration lab page.

1 Like

May I report one more crash source with the QT5/VTK8 build:

Any tool in the new segment editor crashes Slicer as soon as the corresponding button is pressed. The old segment editor is still functional.


Thanks, we’ll look into this! What operating system do you use?

I use ArchLinux to build and run.

@chir.set The issue has been fixed just now in https://github.com/Slicer/Slicer/commit/7de0d6a6e71694ac808a2e73da3fd3c3300f708c

Thanks. But when I click on ‘Show details’ as per attached image, Slicer crashes immediately.


Thanks for testing! Unfortunately I cannot reproduce this, as I only have a Windows build with Qt5. I’m building one on Mac now and see if it can be reproduced there. In the meantime @Davide_Punzo Can you please try to see if this is as easy to fix as the previous one? Thanks a lot!

https://github.com/Slicer/Slicer/pull/819 should fix it

Thanks a lot, @Davide_Punzo! I integrated the pull request in https://github.com/Slicer/Slicer/commit/0c3f2cca8d11ed49d55724bca9ca166b08309d0d

@chir.set Please don’t get discourdaged and keep sending us any issues you find :slight_smile:


Slicer crashes in Threshold Scalar Volume on ‘Apply’, if ‘Below’ a threshold value is selected. It doesn’t crash if ‘Above’ or ‘Outside’ is chosen. Using Qt5/VTK9 build on Linux.

Slicer will crash on application exit if the ‘Standard Quantitative’ pane has been shown, whether it is shown or not on exit. Using Qt5/VTK9 build on Linux.

Qt5 build failing on OS X 10.12.6. Was working a few days ago, sorry I can’t be more specific than that.

Configured with:

/Applications/CMake.app/Contents/MacOS/CMake -DQt5_DIR:PATH=/usr/local/opt/qt

First errors:

  • Skipping extension packaging: DataStore - Slicer_SOURCE_DIR is defined.

– Configuring remote module: CompareVolumes
– Configuring Scripted module: CompareVolumes

– Configuring remote module: LandmarkRegistration
– Configuring Scripted module: LandmarkRegistration
CMake Warning at Utilities/Scripts/SlicerWizard/doc/CMakeLists.txt:41 (message):
Warning: sphinx-build not found: Python documentation will not be created

– Setting ‘CTEST_MODEL’ variable with default value ‘Experimental’
– Setting ‘MIDAS_PACKAGE_URL’ variable with default value ‘http://slicer.kitware.com/midas3
– Setting ‘MIDAS_PACKAGE_EMAIL’ variable with default value ‘OBFUSCATED’
– Setting ‘MIDAS_PACKAGE_API_KEY’ variable with default value ‘OBFUSCATED’
– Setting CPACK_PACKAGE_NAME to ‘Slicer’
– Setting CPACK_PACKAGE_VERSION to ‘4.9.0-2018-01-13’
– Setting CPACK_PACKAGE_INSTALL_DIRECTORY to ‘Slicer 4.9.0-2018-01-13’
– Setting CPACK_PACKAGE_DESCRIPTION_FILE to ‘/Users/hherhold/Development/slicer/Slicer/README.txt’
– Setting CPACK_RESOURCE_FILE_LICENSE to ‘/Users/hherhold/Development/slicer/Slicer/License.txt’
– Setting CPACK_PACKAGE_DESCRIPTION_SUMMARY to ‘Medical Visualization and Processing Environment for Research’
– Setting CPACK_PACKAGE_ICON to ‘/Users/hherhold/Development/slicer/Slicer/Applications/SlicerApp/Resources/Slicer.icns’
– Configuring done
CMake Error at Libs/vtkAddon/CMakeLists.txt:94 (add_library):
Cannot find source file:


Tried extensions .c .C .c++ .cc .cpp .cxx .m .M .mm .h .hh .h++ .hm .hpp
.hxx .in .txx

CMake Error at Libs/vtkTeem/CMakeLists.txt:87 (add_library):
Cannot find source file:


Tried extensions .c .C .c++ .cc .cpp .cxx .m .M .mm .h .hh .h++ .hm .hpp
.hxx .in .txx

Thanks! I will check out both issues on Monday.

@hherhold I’ve started a Mac build (although it’s 10.13.1), will let you know how it went.

@chir.set I wasn’t able to reproduce the crash with either way, but I tried on Windows. If anyone uses Linux for development, please test this one. @jcfr could you try? Otherwise I’ll need to do a build on a VM. Thanks!

Qt5 build failing on OS X 10.12.6. Was working a few days ago, sorry I can’t be more specific than that
Cannot find source file: … Libs/vtkTeem/vtkTeemHierarchy.stamp.txt

Thanks to @adamrankin, the issue related to VTK hierarchy stamps file should be fixed in r26834

ArchLinux … Any tool in the new segment editor crashes Slicer as soon as the corresponding button is pressed.

I am not able to reproduce the crash.

If this is still an issue, setting up a VM may be the best way forward.

this was fixed in the past in https://github.com/Slicer/Slicer/pull/819 and https://github.com/Slicer/Slicer/commit/0c3f2cca8d11ed49d55724bca9ca166b08309d0d

Instead I confirm this one:

Sorry, but I didn’t understand this other one:

In addition the linux version (at least my build)

  1. some & still appear in the comboboxes and icons in modules and views seems much smaller
    2)some menu have some misalignment. E.g. settings and data module:

Thanks Davide! Was the module name in the module selector like this before (“Se&gment Editor”)?
Update: Nevermind I see the marking on the first screenshot.

you are welcome! the & issue (it shows in many places like the module menu, titles in plotting views, etc. ) was present before https://github.com/Slicer/Slicer/pull/864

The smaller icons (?), menu misalignment (ctkCollapsiblegroupbox?) and smaller ctkCollapsibleButton are a result of the new style set in https://github.com/Slicer/Slicer/pull/864.