# VTK's Qt Widget registration with Qt Designer/Creator ?

**URL:** https://discourse.vtk.org/t/vtks-qt-widget-registration-with-qt-designer-creator/7498
**Category:** Support
**Created:** [December 24, 2021, 7:33pm UTC](https://discourse.vtk.org/t/vtks-qt-widget-registration-with-qt-designer-creator/7498 "2021-12-24T19:33:15Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![Nicholas\_Yue](https://discourse.vtk.org/user_avatar/discourse.vtk.org/nicholas_yue/32/3751_2.png) [@Nicholas\_Yue](https://discourse.vtk.org/u/Nicholas_Yue)
#### Post date: [December 24, 2021, 7:33pm UTC](https://discourse.vtk.org/t/vtks-qt-widget-registration-with-qt-designer-creator/7498/1 "2021-12-24T19:33:15Z")

</div>

I have build VTK 9.1.0 from source on Ubuntu 18.0.4 with Qt 5.14.2

I understand there were some changes to naming of Qt related widget in VTK

Googling mentioned something called QVTKWidget which is a plugin Qt Creator/Designer will load so that the widgets show up in the UI for design purpose.

My build of VTK currently shows the following

```auto
/home/nyue/systems/VTK/9.1.0-qt5-py3/lib/libvtkViewsQt-9.1.so
/home/nyue/systems/VTK/9.1.0-qt5-py3/lib/libvtkRenderingQt-9.1.so
/home/nyue/systems/VTK/9.1.0-qt5-py3/lib/libvtkGUISupportQt-9.1.so
/home/nyue/systems/VTK/9.1.0-qt5-py3/lib/libvtkGUISupportQtSQL-9.1.so
/home/nyue/systems/VTK/9.1.0-qt5-py3/lib/libvtkGUISupportQtQuick-9.1.so

```

Are the Qt Creator/Designer plugin shared library still being built or named differently ?

If they are no longer maintained/supported, I will design the Qt app in Designer via `promotion` method instead of drag and drop. I just wanted to confirm this before I use the alternative approach.

I have also come across this [write-up](https://www.slicer.org/wiki/Documentation/Labs/Qt5-and-VTK8) which mentioned QDesignerCustomWidgetInterface but searching through the VTK-9.1.0 source does not show them up.

Cheers