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  1. Qt for Python
  2. PYSIDE-2137

RuntimeError: Internal C++ object (PySide6.QtWidgets.QLabel) already deleted.

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Details

    • Bug
    • Resolution: Invalid
    • Not Evaluated
    • None
    • 6.4.1
    • PySide, Shiboken
    • None
    • linux, pyside 6.4.1, , shiboken 6.4.1
    • Linux/X11

    Description

      Reusing the sample program from issue 2121 and writing

      QMetaObject.invokeMethod(self, "setText", connection_type, Q_ARG(QObject, QLabel("Status")))

      I get

      $ python pysideXXX.py  
Python 3.10.8
Qt 6.4.1 (x86_64-little_endian-lp64 shared (dynamic) release build; by GCC 12.2.0) [limited API]
Window.__init__: MainThread
asynch: Thread-1 (asynch)
Window.setStatus: Thread-1 (asynch)
Invoking using ConnectionType.BlockingQueuedConnection
Window.setText: MainThread

Traceback (most recent call last):
  File "/home/wolfgang/lib/python/qtgl/test/pysideXXX.py", line 27, in setText
    self.__statusLabel.setText(obj.text())

RuntimeError: Internal C++ object (PySide6.QtWidgets.QLabel) already deleted.

      which means that the QLabel is already gone. Defining the QLabel as a variable and re-using it inside of invokeMethod resolves the isssue.

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        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. PYSIDE-2201 Segfault when calling signal of temporary

          • P4: Low - Would be nice to fix, but it's not very important.
          • Closed

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            People

              crmaurei Cristian Maureira-Fredes
              wolf.seifert Wolfgang Seifert
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              Dates

                Created:
                Updated:
                Resolved: