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  1. Qt for Python
  2. PYSIDE-1504

QProxyStyle crash app !

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Details

    • Bug
    • Resolution: Out of scope
    • Not Evaluated
    • None
    • 6.0.0, 6.0.1, 6.5.3
    • PySide
    • None
    • Windows

    Description

      Hey

       

      This code will cause crash>

       

      import sys
      
      from PySide6.QtWidgets import QApplication, QProxyStyle, QWidget
      app = QApplication()
      
      class MyProxyStyle(QProxyStyle):
          def __init__(self):
              QProxyStyle.__init__(self)
              self.setBaseStyle(QApplication.style())
      s =MyProxyStyle()
      s.deleteLater()
      w =QWidget()
      w.show()
      sys.exit(app.exec_())
      

      Can any1 help out? 

      It could be related to > https://bugreports.qt.io/browse/PYSIDE-922

       

       

      UPDATE 

      I've made a fully working example showing the issue.  Please have look at styleVersionTest_01.py. 

      There are 6 buttons, each of them creates a tree view with a different QProxyStyle. The Inherited Style takes app.style() as base style while default() style does not. As you can see the default style has a different style to the currently applied app style. Thus it does not inherit from the app by default as it should. When it comes to deletion after you add the 3 views, go on and delete the 3 vies and you will get a crash. 

       

       

       

      Attachments

        1. pyside1504_stack.txt
          23 kB
        2. pyside1504.py
          1 kB
        3. pyside1504_noncrash.py
          1 kB
        4. styleVersionTest_01.py
          3 kB
        5. image-2021-05-10-13-57-22-540.png
          image-2021-05-10-13-57-22-540.png
          28 kB
        6. image-2024-01-24-14-58-56-972.png
          image-2024-01-24-14-58-56-972.png
          214 kB

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              crmaurei Cristian Maureira-Fredes
              dariusz dariusz
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              Dates

                Created:
                Updated:
                Resolved:

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