pyqt5 QWebEngineView 重写mousepressevent捕获鼠标点击事件，无响应_python qwebengineview 点击事件

QWebEngineView 加载网页后，重写mousepressevent捕获鼠标点击事件，无响应原因是

QWebEngineView在加载界面后，被本身的child接收了该事件，

解决办法：同过重载event，截取QEvent::ChildAdded事件

from PyQt5 import QtCore, QtWidgets, QtWebEngineWidgets
from PyQt5.QtWebEngineWidgets import QWebEngineView, QWebEngineSettings
from PyQt5.QtCore import Qt
from PyQt5.QtCore import QTimer, QEventLoop, QObject, pyqtSignal, QEvent
 
class QWebEngineView_New(QWebEngineView):
    js_result = pyqtSignal(str)
    def __init__(self, parent=None):
        super(QWebEngineView_New, self).__init__(parent)
        self.load(QtCore.QUrl())
        self.focusProxy().installEventFilter(self)
        self.setMouseTracking(True) #追踪鼠标
        self._glwidget = None
 
    def eventFilter(self, source, event):
        #  QWebEngineView 覆盖了 event() 方法，所以它没有调用 QWidget 事件处理程序
        if event.type() == QEvent.MouseButtonPress:
            print(f'eventtype:{event.type()} ChildAdded: {QEvent.ChildAdded} MouseButtonPress:{QEvent.MouseButtonPress}')
            print(source is self._glwidget)
        if event.type() == QEvent.ChildAdded and event.child().isWidgetType():
            self._glwidget = event.child()
            self._glwidget.installEventFilter(self)
        elif (event.type() == QEvent.MouseButtonPress):
            #print(Qt.LeftButton)
            #print(QEvent.MouseButtonPress)
            #print('event_type:', event.type())
            print('web-view mouse-press:', event.pos())
            pos = event.pos()
            self._run_javascript(pos.x(), pos.y())
        return super(QWebEngineView_New, self).eventFilter(source, event)
 
    def _run_javascript(self, x, y):
        # 在这里写入你的 JavaScript 代码
        # js_code = "alert('Hello from JavaScript!');"
        js_code = '''function myFunction(){return document.elementFromPoint(%s, %s).textContent;}myFunction();'''
        js_code = js_code % (x, y)
        # self.fatherWindow.tabWidget.currentWidget().page().runJavaScript(js_code, self.js_callback)
        self.page().runJavaScript(js_code, self.js_callback)
 
    def js_callback(self, result):
        # 获取点击部位的内容
        if not result:
            return
        jsresult = result.replace('\n', '')
        print('jsresult :', jsresult )
        self.js_result.emit(jsresult ) # 将内容传给信号槽
 
if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    view = QWebEngineView_New()
    view.load(QtCore.QUrl("https://www.baidu.com"))
    view.show()
    sys.exit(app.exec_())