Badwindow

[younes1010]

Hi,
I'm trying to re-implement the scikit-surgerytutorial01 so I exactly followed all steps indicated in the documentation "https://scikit-surgerytutorial01.readthedocs.io/en/latest/01_VTK_Overlay_App.html" and I created a virtual environment where I installed all requirements with indicated versions on requirements.txt and .yml file. After, I created a file named overlay.py with the following code :

import sys
from PySide2.QtWidgets import QApplication
from sksurgeryutils.common_overlay_apps import OverlayBaseWidget
class OverlayApp(OverlayBaseWidget):
         def update_view(self):
                   _, image = self.video_source.read()
                   self.vtk_overlay_window.set_video_image(image)
                   self.vtk_overlay_window.Render()
if __name__ == '__main__':
         app = QApplication([])
         video_source = 0
         viewer = OverlayApp(video_source)
         model_dir = '../models'
         viewer.add_vtk_models_from_dir(model_dir)
         viewer.show()
         viewer.start()
         sys.exit(app.exec_())

When I execute this code I get :

(python_3.7_venv) younes@younes-ThinkPad-X1-Carbon-3rd:~/python_3.7_venv$ python overlay.py
Warning: Ignoring XDG_SESSION_TYPE=wayland on Gnome. Use QT_QPA_PLATFORM=wayland to run on Wayland anyway.
QWidget: Must construct a QApplication before a QWidget
Aborted (core dumped)
I changed the Pyside2 by Pyside6 and the Error vanished so the code continue to be executed but nothing is shown in the appeared window as shown in the screenshot below:

I'd like to know what is exactly the problem.

I'm working on ubuntu environment:
Ubuntu 24.04 LTS
pylint 2.14.5
pyparsing 3.1.2
PyQt5 5.15.10
PyQt5-Qt5 5.15.2
PyQt5-sip 12.13.0
pyrsistent 0.19.3
PySide2 5.15.0
PySide6 6.5.3
PySide6-Addons 6.5.3
PySide6-Essentials 6.5.3
pytest 7.1.2
python-dateutil 2.9.0.post0
python-slugify 8.0.4
pytz 2024.1
PyYAML 6.0.1
pyzmq 26.0.3
requests 2.31.0
rich 13.7.1
scikit-surgery 0.1.11+70.g297b212.dirty
scikit-surgeryarucotracker 0.1.1
scikit-surgerybk 0.3.5
scikit-surgerycalibration 0.2.5
scikit-surgerycore 0.7.2
scikit-surgeryimage 0.10.1
scikit-surgeryutils 2.0.0
scikit-surgeryvtk 2.1.2
scipy 1.7.3

cheers,
younes