PyQt5基础学习-QMenu(右键菜单) 1.QTableWidget().selectionModel().selection().indexes(获得右键选择的索引值) 2.QTableWidget().setContextMenuPolicy(允许右键点击有反应) 3.QTableWidget.mapToGlobal(获得相对屏幕的位置信息)

右键点击表格的选项，然后弹出响应的菜单

TableWidgetContextMenu.py 

"""
在表格中显示上下文菜单

1.如何弹出菜单
2.在满足条件下弹出菜单

QMenu.exec_
"""

import sys
from PyQt5.QtWidgets import *

from PyQt5.QtCore import *

class TableWidgetContextMenu(QWidget):

    def __init__(self):
        super(TableWidgetContextMenu, self).__init__()
        self.initUI()

    def initUI(self):
        self.setWindowTitle("在表格中显示上下文菜单")
        self.resize(500, 300)
        layout = QHBoxLayout()
        self.tableWidget = QTableWidget()
        self.tableWidget.setRowCount(5)
        self.tableWidget.setColumnCount(3)
        layout.addWidget(self.tableWidget)

        self.tableWidget.setHorizontalHeaderLabels(['姓名', '性别', '身高'])

        newItem = QTableWidgetItem('张三')
        self.tableWidget.setItem(0, 0, newItem)

        newItem = QTableWidgetItem('男')
        self.tableWidget.setItem(0, 1, newItem)

        newItem = QTableWidgetItem('160')
        self.tableWidget.setItem(0, 2, newItem)

        newItem = QTableWidgetItem('李四')
        self.tableWidget.setItem(1, 0, newItem)

        newItem = QTableWidgetItem('女')
        self.tableWidget.setItem(1, 1, newItem)

        newItem = QTableWidgetItem('170')
        self.tableWidget.setItem(1, 2, newItem)

        newItem = QTableWidgetItem('李')
        self.tableWidget.setItem(2, 0, newItem)

        newItem = QTableWidgetItem('女')
        self.tableWidget.setItem(2, 1, newItem)

        newItem = QTableWidgetItem('170')
        self.tableWidget.setItem(2, 2, newItem)
        #允许单机右键响应
        self.tableWidget.setContextMenuPolicy(Qt.CustomContextMenu)
        #构建右键的点击事件
        self.tableWidget.customContextMenuRequested.connect(self.generateMenu)
        self.setLayout(layout)

    def generateMenu(self, pos):
        print(pos)
        #获得右键所点击的索引值
        for i in self.tableWidget.selectionModel().selection().indexes():
            #获得当前的行数目
            rowIndex = i.row()
            #如果选择的索引小于2, 弹出上下文菜单
            if rowIndex < 2:
                #构造菜单
                menu = QMenu()
                #添加菜单的选项
                item1 = menu.addAction("菜单项1")
                item2 = menu.addAction("菜单项2")
                item3 = menu.addAction("菜单项3")
                #获得相对屏幕的位置
                screenPos = self.tableWidget.mapToGlobal(pos)
                #被阻塞, 执行菜单
                action = menu.exec(screenPos)
                if action == item1:
                    print("选择了第一个菜单项", self.tableWidget.item(rowIndex, 0).text(),
                                            self.tableWidget.item(rowIndex, 1).text(),
                                            self.tableWidget.item(rowIndex, 2).text())
                elif action == item2:
                    print("选择了第二个菜单项", self.tableWidget.item(rowIndex, 0).text(),
                                            self.tableWidget.item(rowIndex, 1).text(),
                                            self.tableWidget.item(rowIndex, 2).text())
                elif action == item3:
                    print("选择了第三个菜单项", self.tableWidget.item(rowIndex, 0).text(),
                                            self.tableWidget.item(rowIndex, 1).text(),
                                            self.tableWidget.item(rowIndex, 2).text())
            else:
                return

if __name__ == "__main__":
    app = QApplication(sys.argv)
    main = TableWidgetContextMenu()
    main.show()

    sys.exit(app.exec_())