python -- pyQt5 QListWidget-多重选择 QCheckBox-复选框

https://www.cnblogs.com/itwangqiang/articles/14928061.html
https://www.cnblogs.com/itwangqiang/articles/14959367.html
QListWidget ：https://geek-docs.com/pyqt/pyqt-questions/39_pyqt_qlistwidget_and_multiple_selection.html#google_vignette
https://deepinout.com/pyqt/pyqt-questions/39_pyqt_qlistwidget_and_multiple_selection.html#google_vignette

一、QListWidget

# 创建一个QListWidget对象：
listWidget = QListWidget()
 
# 创建并添加列表项：
item1 = QListWidgetItem("Item 1")
item2 = QListWidgetItem("Item 2")
listWidget.addItem(item1)
listWidget.addItem(item2)
 
# 在需要的地方显示QListWidget部件：
listWidget.show()

方法解析

listWidget.clearSelection()  # 清除所有的选择

item = listWidget.item(0)
item.setSelected(True)  # 设置列表项的选中状态

selectedItems = listWidget.selectedItems()  # 获取当前选择的列表项
for item in selectedItems:
    print(item. Text())

		# 设置多重选择模式
        self.Settings_UI.listWidget.setSelectionMode(QAbstractItemView.MultiSelection)
        # 处理多重选择事件
        self.Settings_UI.listWidget.itemSelectionChanged.connect(self.handleSelectionChanged)
        
    def handleSelectionChanged(self):
        items = []  # 列表
        selectedItems = self.Settings_UI.listWidget.selectedItems()
        for item in selectedItems:
            # print(item.text())
            items.append(item.text() + '  ')  # 选中的值添加到列表

        # print(items)
        select_data = "".join(items)
        print(select_data)  # 列表转 str类型输出

        self.Settings_UI.lineEdit_18.setText(select_data)  # 将选择的结果生成在LineEdit里
        result1_data = self.Settings_UI.lineEdit_18.text()  # 获取LineEdit数据

示例代码

from PySide6.QtWidgets import QApplication, QMainWindow, QListWidget, QListWidgetItem, QAbstractItemView

def handleSelectionChanged():
    selectedItems = listWidget.selectedItems()
    for item in selectedItems:
        print(item.text())

app = QApplication([])
window = QMainWindow()

listWidget = QListWidget()
item1 = QListWidgetItem("Item 1")
item2 = QListWidgetItem("Item 2")
listWidget.addItem(item1)
listWidget.addItem(item2)
listWidget.setSelectionMode(QAbstractItemView.MultiSelection)

listWidget.itemSelectionChanged.connect(handleSelectionChanged)

window.setCentralWidget(listWidget)
window.show()

app.exec()

二、QListWidget 复选框

参考：https://www.cnblogs.com/itwangqiang/articles/14959367.html

方法	说明
setChecked()	调整复选框的状态，设置为True表示选中，False表示取消选中的复选框
setText()	设置复选框的显示文本
text()	返回复选框的显示文本
self.Settings_UI.listWidget_2.setEnabled(False)	是否启用

	#  '''按钮绑定方法'''
    self.Settings_UI.checkBox_8.clicked.connect(self.ceshi)

    def ceshi(self):
    	check_box_list = []
        if self.Settings_UI.checkBox_8.isChecked():
            data = self.Settings_UI.checkBox_8.text()
            print(data)
            check_box_list.append(data + '-')  # 选中的值添加到列表
            
# 多个结果的话可以用列表  list

示例代码

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'checkbox.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_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(703, 527)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.checkBox = QtWidgets.QCheckBox(self.centralwidget)
        self.checkBox.setGeometry(QtCore.QRect(240, 160, 92, 20))
        self.checkBox.setObjectName("checkBox")
        self.checkBox_2 = QtWidgets.QCheckBox(self.centralwidget)
        self.checkBox_2.setGeometry(QtCore.QRect(240, 200, 92, 20))
        self.checkBox_2.setObjectName("checkBox_2")
        self.checkBox_3 = QtWidgets.QCheckBox(self.centralwidget)
        self.checkBox_3.setGeometry(QtCore.QRect(340, 160, 92, 20))
        self.checkBox_3.setObjectName("checkBox_3")
        self.checkBox_4 = QtWidgets.QCheckBox(self.centralwidget)
        self.checkBox_4.setGeometry(QtCore.QRect(340, 200, 92, 20))
        self.checkBox_4.setObjectName("checkBox_4")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(260, 240, 101, 31))
        self.pushButton.setObjectName("pushButton")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 703, 27))
        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)
        self.pushButton.clicked.connect(self.getvalue)

    def getvalue(self):
        from PyQt5.QtWidgets import QMessageBox
        list = ""
        if (self.checkBox or self.checkBox_2 or self.checkBox_3 or self.checkBox_4).isChecked():
            if self.checkBox.isChecked():        #判断复选框是否被选中
                list+="\n" + self.checkBox.text()#记录选中的权限
            if self.checkBox_2.isChecked():
                list+="\n" +self.checkBox_2.text()
            if self.checkBox_3.isChecked():
                list+="\n" +self.checkBox_3.text()
            if self.checkBox_4.isChecked():
                list+="\n" +self.checkBox_4.text()
            # 使用QMessageBox.information()方法弹出提示框，显示勾选的所有的选择
            QMessageBox.information(MainWindow, "提示", "选择的课程有\n"+list, QMessageBox.Ok)
        else:
            QMessageBox.information(MainWindow, "提示", "没有选\n" + list, QMessageBox.Ok)


    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.checkBox.setText(_translate("MainWindow", "数学"))
        self.checkBox_2.setText(_translate("MainWindow", "英语"))
        self.checkBox_3.setText(_translate("MainWindow", "物理"))
        self.checkBox_4.setText(_translate("MainWindow", "化学"))
        self.pushButton.setText(_translate("MainWindow", "复选按钮"))

import sys
# 主方法，程序从此处启动PyQt设计的窗体
if __name__ == '__main__':
   app = QtWidgets.QApplication(sys.argv)
   MainWindow = QtWidgets.QMainWindow() # 创建窗体对象
   ui = Ui_MainWindow() # 创建PyQt设计的窗体对象
   ui.setupUi(MainWindow) # 调用PyQt窗体的方法对窗体对象进行初始化设置
   MainWindow.show() # 显示窗体
   sys.exit(app.exec_()) # 程序关闭时退出进程