如何解决如何在PyQt5 Python中更改QMessageBox的颜色
msgBox = QMessageBox()
reply = msgBox.question(self,'Window Close','Are you sure you want to close the window?',QMessageBox.Yes | QMessageBox.No,QMessageBox.No)
如下所示:
msgBox.setStyleSheet("QLabel{ color: white}")
但是看起来它不起作用,因为它仍然是相同的黑色。如何将颜色更改为while。
下面是完整的代码:
UI代码:
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'app.ui'
#
# Created by: PyQt5 UI code generator 5.15.0
#
# 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_MainWindow(object):
def setupUi(self,MainWindow):
MainWindow.setobjectName("MainWindow")
MainWindow.resize(790,480)
MainWindow.setStyleSheet("background-color: rgb(16,16,16);")
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setobjectName("centralwidget")
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(30,20,81,31))
self.pushButton.setStyleSheet("background-color: rgb(255,255,255);\n"
"color: rgb(0,0);")
self.pushButton.setobjectName("pushButton")
self.textEdit = QtWidgets.QTextEdit(self.centralwidget)
self.textEdit.setGeometry(QtCore.QRect(20,70,601,341))
self.textEdit.setStyleSheet("background-color: rgb(255,255);\n"
"color: rgb(0,0);")
self.textEdit.setobjectName("textEdit")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0,790,21))
self.menubar.setobjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setobjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self,MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setwindowTitle(_translate("MainWindow","MainWindow"))
self.pushButton.setText(_translate("MainWindow","PushButton"))
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
app.py代码:
import sys
from PyQt5.QtWidgets import QApplication,QMainWindow,QMessageBox
from src.app_ui import Ui_MainWindow
class HomeWindow(QMainWindow,Ui_MainWindow):
def __init__(self):
QMainWindow.__init__(self)
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
def closeEvent(self,event):
msgBox = QMessageBox()
msgBox.setStyleSheet("QLabel{ color: white}")
reply = msgBox.question(self,QMessageBox.No)
if reply == QMessageBox.Yes:
event.accept()
else:
event.ignore()
app = QApplication(sys.argv)
main_window = HomeWindow()
main_window.show()
sys.exit(app.exec_())
预期输出:
解决方法
QMessageBox::question()
是一个静态方法,它创建一个QMessageBox对象,将其显示并返回与设置样式表的msgBox对象不同的选择。一种可能的解决方案是不使用QMessageBox :: question()方法,而使用msgBox构建窗口:
def closeEvent(self,event):
msgBox = QMessageBox(
QMessageBox.Question,"window Close","Are you sure you want to close the window?",buttons=QMessageBox.Yes | QMessageBox.No,parent=self,)
msgBox.setDefaultButton(QMessageBox.No)
msgBox.setStyleSheet("QLabel{ color: white}")
msgBox.exec_()
reply = msgBox.standardButton(msgBox.clickedButton())
if reply == QMessageBox.Yes:
event.accept()
else:
event.ignore()
Qt样式表从父级到子级散布级联,这就是为什么要观察这种风格的原因。如果不需要,则可能的选择是不将其传递给父级:
reply = msgBox.question(
None,"Window Close",QMessageBox.Yes | QMessageBox.No,QMessageBox.No,)
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