pyqt5学习4

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QLineEdit, QMessageBox
from PyQt5.QtGui import QIcon
from PyQt5.QtCore import QCoreApplication
from random import randint


class Example(QWidget):
    def __init__(self):
        super().__init__()
        self.init_ui()
        self.num = randint(1, 100)#生成随机数

    def init_ui(self):
        self.setGeometry(1068, 612, 600, 600)
        self.setWindowTitle(‘天晟出品‘)
        self.setWindowIcon(QIcon(‘ComNet.ico‘))

        self.qbtn = QPushButton(‘退出‘, self) #新建按钮对象
        self.qbtn.clicked.connect(QCoreApplication.instance().quit) #按钮点击事件
        self.qbtn.resize(100, 50)
        self.qbtn.move(450, 450)

        self.qbtn1 = QPushButton(‘我猜‘, self) #新建按钮对象
        self.qbtn1.setGeometry(330, 450, 100, 50)
        self.qbtn1.setToolTip(‘<b>我们可以支付一些费用点击这里猜数字，猜对了会有很大的奖励，你想象不到的福利！！你愿意猜吗？</b>‘) #按钮提示
        self.qbtn1.clicked.connect(self.show_message)

        self.text = QLineEdit(‘在这里输入数字‘, self)
        self.text.selectAll()
        self.text.setFocus()
        self.text.setGeometry(100, 250, 400, 50)

        self.show()

    def show_message(self):
        guessnumber = int(self.text.text())#将LineEdit的字符str转换为int类型
        print(self.num)
        if guessnumber > self.num:
            QMessageBox.about(self, ‘看结果‘, ‘猜大了!‘)
            self.text.setFocus()
        elif guessnumber < self.num:
            QMessageBox.about(self, ‘看结果‘, ‘猜小了!‘)
            self.text.setFocus()
        else:
            QMessageBox.about(self, ‘看结果‘, ‘答对了!进入下一轮!‘)
            self.num = randint(1, 100)
            self.text.clear()
            self.text.setFocus()

    def closeEvent(self, event):
        # reply = QMessageBox.question(self, ‘确认‘, ‘确认退出吗‘, QMessageBox.Yes | QMessageBox.No, QMessageBox.No)
        # reply = QMessageBox.critical(self, ‘确认‘, ‘确认退出吗‘, QMessageBox.Yes | QMessageBox.No, QMessageBox.No)
        # reply = QMessageBox.warning(self, ‘确认‘, ‘确认退出吗‘, QMessageBox.Yes | QMessageBox.No, QMessageBox.No)
        reply = QMessageBox.information(self, ‘确认‘, ‘确认退出吗‘, QMessageBox.Yes | QMessageBox.No, QMessageBox.No)

        if reply == QMessageBox.Yes:
            event.accept()
        else:
            event.ignore()


if __name__ == ‘__main__‘:
    app = QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())