How to set a hover event handler on a QPushButton in PyQt5 - pyqt5

Question

I'm trying to set a hover event on a button to open an options menu implemented as a QDialog. Everything works so far except the hovering: the menu opens when the button is pressed and disappears if any of the options is selected or the mouse is moved away from the dialog.
Now I want to open the window without clicking the button but rather by hovering over it.
I've seen PyQt5 mouse hover functions and How to detect mouse hover event in PySide6 widget but i wasn't able to make it work this way.
My code looks like this:
class ElementWidget(QWidget):
def __init__ (self, p, element):
super().__init__(p)
layout = QHBoxLayout()
label = QLabel(element)
label.setFixedSize(200,39)
self.btn = QPushButton("btn")
self.btn.clicked.connect(self._openOptionsMenu)
self.btn.setFixedSize(50,39)
layout.addWidget(label)
layout.addWidget(self.btn)
self.setLayout(layout)
self.setFixedSize(250,60)
def _openOptionsMenu(self):
self.dlg = selfClosingDialog(self.closeOptionsMenu, parent = self)
self.dlg.setLayout(ElementOptionsLayout(self.closeOptionsMenu))
self.dlg.setWindowFlag(Qt.FramelessWindowHint)
self.dlg.setGeometry(QCursor.pos().x(), QCursor.pos().y() ,100,100)
self.dlg.show()
def closeOptionsMenu(self):
self.dlg.close()
if __name__ == "__main__":
app = QApplication([])
window = QMainWindow()
window.resize(500,400)
wid = ElementWidget(window,"Parabola_0")
window.show()
app.exec_()
with the custom dialog:
class selfClosingDialog(QDialog):
def __init__(self, closeFunc, parent=None):
super().__init__(parent)
self.closeFunc = closeFunc
def leaveEvent(self, event):
self.closeFunc()
The perfect solution would be to replace the clicked-event by some kind of an onHover

Answer 1

I found the answer.
It is not a signal but an event enterEvent that needs to be reimplemented by a subclass of QWidget
class HoverOpenBtn(QPushButton):
def __init__(self, text, openOtionsFunc, parent=None):
super().__init__(text, parent)
self.openFunc = openOtionsFunc
def enterEvent(self, event):
self.openFunc()