QClipboard::dataChanged()在QtWebEngine上下文中未发出

Question

QClipboard::dataChanged()不是在QtWebEngine上下文中使用pyqt6或pyside6发出的，但是它在it 5/pyqt5 5中工作得很好，如何解决？环境：

Python: 3.9.10 (tags/v3.9.10:f2f3f53, Jan 17 2022, 15:14:21) [MSC v.1929 64 bit (AMD64)]
Flavor: Unknown
Executable: C:\Users\Oscar\AppData\Local\Programs\Python\Python39\python.exe
OS: Windows
Arch: x86_64
WindowsRelease: 10

>>> from PyQt6.QtCore import *
>>> QT_VERSION_STR
'6.2.3'
>>> PYQT_VERSION_STR
'6.2.3'
>>> 

from PyQt6.QtCore import *
from PyQt6.QtCore import pyqtSlot as Slot
from PyQt6.QtCore import pyqtSignal as Signal
from PyQt6.QtGui import *
from PyQt6.QtWidgets import *
from PyQt6.QtWebEngineWidgets import *
from PyQt6.QtWebEngineCore import *
import sys


class WebEngineView(QWebEngineView):  #

    def __init__(self, parent=None):
        super().__init__(parent)
        self.page().settings().setAttribute(QWebEngineSettings.WebAttribute.JavascriptCanAccessClipboard, True)
        self.load(QUrl('https://doc.qt.io/qt-6/qwebenginesettings.html'))
        self.clipboard = QGuiApplication.clipboard()
        self.clipboard.dataChanged.connect(self.clipboardTextChanged)

    @Slot()
    def clipboardTextChanged(self):
        self.copiedText = self.clipboard.text()

        print(self.sender(), self.copiedText)


if __name__ == "__main__":

    app = QApplication(sys.argv)
    webEngineView = WebEngineView()
    webEngineView.show()
    sys.exit(app.exec())

Answer 1

我找到了这里的解决方案

沙箱以某种方式阻塞WM_CLIPBOARDUPDATE消息( https://learn.microsoft.com/en-us/windows/win32/dataxchg/wm-clipboardupdate )，QPA无法通知剪贴板更改。 自https://codereview.qt-project.org/c/qt/qtwebengine/+/276060以来，窗口上的沙箱已启用 neosettler，作为一种解决方法，您可以通过--非沙箱命令行参数或通过设置QTWEBENGINE_DISABLE_SANDBOX环境变量来禁用沙箱。

然后，我将代码更改为：

from PyQt6.QtCore import *
from PyQt6.QtCore import pyqtSlot as Slot
from PyQt6.QtCore import pyqtSignal as Signal
from PyQt6.QtGui import *
from PyQt6.QtWidgets import *
from PyQt6.QtWebEngineWidgets import *
from PyQt6.QtWebEngineCore import *
import sys
import os


class WebEngineView(QWebEngineView):  #

    def __init__(self, parent=None):
        super().__init__(parent)
        self.page().settings().setAttribute(QWebEngineSettings.WebAttribute.JavascriptCanAccessClipboard, True)
        self.load(QUrl('https://doc.qt.io/qt-6/qwebenginesettings.html'))
        self.clipboard = QGuiApplication.clipboard()
        self.clipboard.dataChanged.connect(self.clipboardTextChanged)

    @Slot()
    def clipboardTextChanged(self):
        self.copiedText = self.clipboard.text()

        print(self.copiedText)


if __name__ == "__main__":
    sys.argv.append('--no-sandbox')
    print(sys.argv)
    app = QApplication(sys.argv)

    webEngineView = WebEngineView()
    webEngineView.show()
    sys.exit(app.exec())