python pyqt5替换QToolButton中的QMenu

Question

文件：ui.py

# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'ui.ui'
#
# Created by: PyQt5 UI code generator 5.15.4
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again.  Do not edit this file unless you know what you are doing.

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_Dialog(object):
def setupUi(self, Dialog):
Dialog.setObjectName("Dialog")
Dialog.resize(400, 300)
self.general_deck_mute_toolbutton = QtWidgets.QToolButton(Dialog)
self.general_deck_mute_toolbutton.setGeometry(QtCore.QRect(60, 40, 101, 45))
self.general_deck_mute_toolbutton.setMinimumSize(QtCore.QSize(45, 45))
self.general_deck_mute_toolbutton.setStyleSheet("")
self.general_deck_mute_toolbutton.setPopupMode(QtWidgets.QToolButton.MenuButtonPopup)
self.general_deck_mute_toolbutton.setAutoRaise(False)
self.general_deck_mute_toolbutton.setObjectName("general_deck_mute_toolbutton")
self.retranslateUi(Dialog)
QtCore.QMetaObject.connectSlotsByName(Dialog)
def retranslateUi(self, Dialog):
_translate = QtCore.QCoreApplication.translate
Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
self.general_deck_mute_toolbutton.setText(_translate("Dialog", "QToolButton"))

if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
Dialog = QtWidgets.QDialog()
ui = Ui_Dialog()
ui.setupUi(Dialog)
Dialog.show()
sys.exit(app.exec_())

文件：main.py

from PyQt5 import QtCore, QtGui, QtWidgets
from ui import Ui_Dialog
import sys
class Main_Program:
def __init__(self):

app = QtWidgets.QApplication(sys.argv)
self.Dialog = QtWidgets.QDialog()
self.ui = Ui_Dialog()
self.ui.setupUi(self.Dialog)
self.Dialog.show()

self.deck_1 = {
"mute":False
}

self.deck_2 = {
"mute":False
}

self.music_clip_deck = {
"mute":False
}

self.make_qtoolbutton_menu()


sys.exit(app.exec_())

def make_qtoolbutton_menu(self):
self.mute_toolbutton_menu = QtWidgets.QMenu()
try:
self.mute_deck_1_action.disconnect()
except:
pass
self.mute_deck_1_action = QtWidgets.QAction(self.Dialog)
if self.deck_1["mute"]==0 or self.deck_1["mute"]==False:
self.mute_deck_1_action.setText("Απενεργοποίηση σίγασης deck 1")
else:
self.mute_deck_1_action.setText("Ενεργοποίηση σίγασης στο deck 1")
self.mute_toolbutton_menu.addAction(self.mute_deck_1_action)
self.mute_deck_1_action.triggered.connect(self.mute_or_unmute_deck_1)

try:
self.mute_deck_2_action.disconnect()
except:
pass
self.mute_deck_2_action = QtWidgets.QAction(self.Dialog)
if self.deck_2["mute"]==0 or self.deck_2["mute"]==False:
self.mute_deck_2_action.setText("Απενεργοποίηση σίγασης deck 2")
else:
self.mute_deck_2_action.setText("Ενεργοποίηση σίγασης στο deck 2")
self.mute_toolbutton_menu.addAction(self.mute_deck_2_action)
self.mute_deck_2_action.triggered.connect(self.mute_or_unmute_deck_2)

try:
self.mute_music_clip_deck_action.disconnect()
except:
pass
self.mute_music_clip_deck_action = QtWidgets.QAction(self.Dialog)
if self.music_clip_deck["mute"]==0 or self.music_clip_deck["mute"]==False:
self.mute_music_clip_deck_action.setText("Απενεργοποίηση σίγασης music clip deck")
else:
self.mute_music_clip_deck_action.setText("Ενεργοποίηση σίγασης στο music clip deck")
self.mute_toolbutton_menu.addAction(self.mute_music_clip_deck_action)
self.mute_music_clip_deck_action.triggered.connect(self.mute_or_unmute_music_clip_deck)

try:
self.ui.general_deck_mute_toolbutton.disconnect()
except:
pass
self.ui.general_deck_mute_toolbutton.setMenu(self.mute_toolbutton_menu)
#self..ui.general_deck_mute_toolbutton.clicked.connect(self.mute_menu_clicked)

def mute_or_unmute_deck_1(self):
self.deck_1["mute"] = not self.deck_1["mute"]
self.make_qtoolbutton_menu()

def mute_or_unmute_deck_2(self):
self.deck_2["mute"] = not self.deck_2["mute"]
self.make_qtoolbutton_menu()

def mute_or_unmute_music_clip_deck(self):
self.music_clip_deck["mute"] = not self.music_clip_deck["mute"]
self.make_qtoolbutton_menu()

if __name__ == "__main__":
program = Main_Program()

要重现问题，请运行python main.py，然后单击菜单操作(从向下箭头(。

此错误消息出现在屏幕上：

QObject::disconnect: Unexpected nullptr parameter
QObject::disconnect: Unexpected nullptr parameter
QObject::disconnect: Unexpected nullptr parameter
QObject::disconnect: Unexpected nullptr parameter
QObject: shared QObject was deleted directly. The program is malformed and may crash.

Answer 1

我认为没有必要创建QMenu和QAction，连接和断开它们只是为了更改文本。创建一个更新文本的方法就足够了：

class Main_Program:
def __init__(self):
app = QtWidgets.QApplication(sys.argv)
self.Dialog = QtWidgets.QDialog()
self.ui = Ui_Dialog()
self.ui.setupUi(self.Dialog)
self.Dialog.show()
self.deck_1 = {"mute": False}
self.deck_2 = {"mute": False}
self.music_clip_deck = {"mute": False}
self.make_qtoolbutton_menu()
self.update_text_qtoolbutton_menu()
sys.exit(app.exec_())
def make_qtoolbutton_menu(self):
self.mute_toolbutton_menu = QtWidgets.QMenu()
self.mute_deck_1_action = QtWidgets.QAction(self.Dialog)
self.mute_deck_1_action.triggered.connect(self.mute_or_unmute_deck_1)
self.mute_toolbutton_menu.addAction(self.mute_deck_1_action)
self.mute_deck_2_action = QtWidgets.QAction(self.Dialog)
self.mute_deck_2_action.triggered.connect(self.mute_or_unmute_deck_2)
self.mute_toolbutton_menu.addAction(self.mute_deck_2_action)
self.mute_music_clip_deck_action = QtWidgets.QAction(self.Dialog)
self.mute_music_clip_deck_action.triggered.connect(
self.mute_or_unmute_music_clip_deck
)
self.mute_toolbutton_menu.addAction(self.mute_music_clip_deck_action)
self.ui.general_deck_mute_toolbutton.setMenu(self.mute_toolbutton_menu)
def update_text_qtoolbutton_menu(self):
self.mute_deck_1_action.setText(
"Ενεργοποίηση σίγασης στο deck 1"
if self.deck_1["mute"]
else "Απενεργοποίηση σίγασης deck 1"
)
self.mute_deck_2_action.setText(
"Ενεργοποίηση σίγασης στο deck 2"
if self.deck_2["mute"]
else "Απενεργοποίηση σίγασης deck 2"
)
self.mute_music_clip_deck_action.setText(
"Ενεργοποίηση σίγασης στο music clip deck"
if self.music_clip_deck["mute"]
else "Απενεργοποίηση σίγασης music clip deck"
)
def mute_or_unmute_deck_1(self):
self.deck_1["mute"] = not self.deck_1["mute"]
self.update_text_qtoolbutton_menu()
def mute_or_unmute_deck_2(self):
self.deck_2["mute"] = not self.deck_2["mute"]
self.update_text_qtoolbutton_menu()
def mute_or_unmute_music_clip_deck(self):
self.music_clip_deck["mute"] = not self.music_clip_deck["mute"]
self.update_text_qtoolbutton_menu()