Slicer  4.13
Slicer is a multi-platform, free and open source software package for visualization and medical image computing

QTCLI → QTGUI Relation

File in Base/QTCLIIncludes file in Base/QTGUI
qSlicerCLILoadableModuleFactory.hqSlicerAbstractModule.h
qSlicerCLIModule.hqSlicerAbstractModule.h
qSlicerCLIModuleWidget.hqSlicerAbstractModuleWidget.h