PyQt5 关于鼠标悬停菜单栏可见性的 QA

Question

我正在使用 PyQT5，Python 版本是 3.78。

当我将鼠标悬停在按钮上并显示时，我收到了一个请求 menubar.I 生成了该代码并且它有效。

import sys

from PyQt5 import QtWidgets
from PyQt5.QtCore import Qt, QEvent
from PyQt5.QtGui import QIcon, QFont
from PyQt5.QtWidgets import (QApplication, QMainWindow, QAction, qApp, QInputDialog, QLineEdit)

from app.strategy.menu_strategy import MenuStrategy


class DrawMenuWnd(QMainWindow):

    def __init__(self, title, parent=None):
        super(DrawMenuWnd, self).__init__(parent)
        self.ctrl = None    # source from wnd hook event
        # self.menu_stg_obj = MenuStrategy(state_mq)  # stop operation when input sth..
        # set title
        self.setWindowTitle(title)
        # set win size and attrs
        self.setGeometry(100, 100, 100, 100)
        self.setWindowFlags(Qt.FramelessWindowHint | Qt.Tool | Qt.WindowStaysOnTopHint)
        self.initial_ui()

    def initial_ui(self):
        self.menubar = self.menuBar()
        self.menubar.setFont(QFont('微软雅黑'))
        self.coin = QIcon(r'./arrow.jpeg')
        # root menu
        self.root_menu = self.menubar.addMenu(self.coin, "")
        # mouse child menu
        self.left_single = QAction("left click", self)
        self.left_double_single = QAction("left double click", self)
        self.right_single = QAction("right click", self)
        self.root_menu.addAction(self.left_single)
        self.root_menu.addAction(self.left_double_single)
        self.root_menu.addAction(self.right_single)
        # seperator
        self.root_menu.addSeparator()
        # keyboard child menu
        self.input = QAction("keyboard input", self)
        self.root_menu.addAction(self.input)
        # connect function
        # self.left_single.triggered.connect(self.menu_stg_obj.click)
        # self.left_double_single.triggered.connect(self.menu_stg_obj.double_click)
        # self.right_single.triggered.connect(self.menu_stg_obj.right_click)
        # self.input.triggered.connect(self.menu_stg_obj.keyboard_input)
        # set event filter
        self.menubar.installEventFilter(self)

    @classmethod
    def initial_menu(cls, title):
        app = QtWidgets.QApplication(sys.argv)
        window = DrawMenuWnd(title)
        window.show()
        app.exec_()

    def eventFilter(self, object, event):
        try:
            if event.type() == QEvent.Enter:
                print("Mouse is over the label")
                if self.root_menu.isHidden():
                    self.root_menu.show()
                # print('program stop is', self.stop)
                return True
            elif event.type() == QEvent.Leave:
                print("Mouse is not over the label")
                self.root_menu.hide()
                # print('program stop is', self.stop)
            return False
        except Exception as error:
            print(error)


if __name__ == '__main__':
    app = QApplication(sys.argv)
    window = DrawMenuWnd("")
    window.show()
    sys.exit(app.exec())

现在我有一个问题，当我的鼠标离开按钮时，菜单栏应该消失，但现在没有。所以现在我想让菜单栏在我的鼠标离开按钮后消失，我尝试使用函数隐藏菜单栏 hide() 但它不起作用

有人帮忙吗？

谢谢

Answer 1

我的意思是这样的:

import sys

from PyQt5 import QtWidgets
from PyQt5.QtCore import Qt, QEvent
from PyQt5.QtGui import QIcon, QFont
from PyQt5.QtWidgets import (QApplication, QMainWindow, QAction, qApp, QInputDialog, QLineEdit,QMenu)




class MyQMenu(QMenu):
    def __init__(self, *args, **kwargs):
        QMenu.__init__(self, *args, **kwargs)

    def leaveEvent(self, QEvent):
        # here the code for mouse leave
        self.close()
        print('Leave')



class DrawMenuWnd(QMainWindow):

    def __init__(self, title, parent=None):
        super(DrawMenuWnd, self).__init__(parent)
        self.ctrl = None    # source from wnd hook event
        # self.menu_stg_obj = MenuStrategy(state_mq)  # stop operation when input sth..
        # set title
        self.setWindowTitle(title)
        # set win size and attrs
        self.setGeometry(100, 100, 100, 100)
        self.setWindowFlags(Qt.FramelessWindowHint | Qt.Tool | Qt.WindowStaysOnTopHint)
        self.initial_ui()

    def initial_ui(self):
        self.menubar = self.menuBar()
        self.menubar.setFont(QFont('微软雅黑'))
        self.coin = QIcon(r'./arrow.jpeg')
        # root menu
        self.root_menu = MyQMenu( "")
        self.root_menu.setIcon(self.coin)
        self.menubar.addMenu(self.root_menu)
        # mouse child menu
        self.left_single = QAction("left click", self)
        self.left_double_single = QAction("left double click", self)
        self.right_single = QAction("right click", self)
        self.root_menu.addAction(self.left_single)
        self.root_menu.addAction(self.left_double_single)
        self.root_menu.addAction(self.right_single)
        # seperator
        self.root_menu.addSeparator()
        # keyboard child menu
        self.input = QAction("keyboard input", self)
        self.root_menu.addAction(self.input)
        # connect function
        # self.left_single.triggered.connect(self.menu_stg_obj.click)
        # self.left_double_single.triggered.connect(self.menu_stg_obj.double_click)
        # self.right_single.triggered.connect(self.menu_stg_obj.right_click)
        # self.input.triggered.connect(self.menu_stg_obj.keyboard_input)
        # set event filter
        self.menubar.installEventFilter(self)

    @classmethod
    def initial_menu(cls, title):
        app = QtWidgets.QApplication(sys.argv)
        window = DrawMenuWnd(title)
        window.show()
        app.exec_()

    def eventFilter(self, object, event):
        try:
            if event.type() == QEvent.Enter:
                print("Mouse is over the label")
                if self.root_menu.isHidden():
                    self.root_menu.show()
                # print('program stop is', self.stop)
                return True
            elif event.type() == QEvent.Leave:
                print("Mouse is not over the label")
                self.root_menu.hide()
                # print('program stop is', self.stop)
            return False
        except Exception as error:
            print(error)


if __name__ == '__main__':
    app = QApplication(sys.argv)
    window = DrawMenuWnd("")
    window.show()
    sys.exit(app.exec())

PyQt5 关于鼠标悬停菜单栏可见性的 QA

PyQt5 A QA about menubar visibility by mouseover

python

pyqt5