macos installEventFilter QWebEngineView Invalid PlatformChannel receive right

[roland-cn]

from PySide6.QtWidgets import QMainWindow,QApplication,QVBoxLayout,QWidget
from PySide6.QtCore import QObject,QUrl
from PySide6.QtWebEngineWidgets import QWebEngineView
import os,sys
class MyEventFilter(QObject):
    def eventFilter(self, source, event):
        return super().eventFilter(source, event)

class HeHe(QMainWindow):
    def __init__(self):
        super().__init__()
        self.event_filter = MyEventFilter()
        QApplication.instance().installEventFilter(self.event_filter) # macos err
        self.browser = QWebEngineView()
        self.browser.setUrl(QUrl('https://www.google.com'))
        central_widget = QWidget()
        layout = QVBoxLayout(central_widget)
        layout.addWidget(self.browser)
        central_widget.setLayout(layout)
        self.setCentralWidget(central_widget)
        
if __name__ == "__main__":
    os.environ['QTWEBENGINE_DICTIONARIES_PATH'] = '/usr/local/bin/hunspell'
    app = QApplication(sys.argv)
    widget = HeHe()
    widget.show()
    sys.exit(app.exec())

macos 12.7.5,inter core,pyside6 v6.7.2,python3.12,poetry

[JonB]

@roland-cn

macos installEventFilter QWebEngineView Invalid PlatformChannel receive right

QApplication.instance().installEventFilter(self.event_filter) # macos err

At the time that installEventFilter() statement is executed you have not even created or used any kind of QWebEngineView(). I fail to see how Qt could issue an error message from that line mentioning QWebEngineView.

[roland-cn]

是只要加上QApplication.instance().installEventFilter(self.event_filter)，QWebEngineView()就会报错。如果注释#QApplication.instance().installEventFilter(self.event_filter)，QWebEngineView()就正常
如果把QWebEngineView()提升到QApplication.instance().installEventFilter(self.event_filter)之上，也不会报错。我印象中，在e...f之后使用view，在windows好像不报错，我记得我昨天在虚拟机上试过。