datetime:2019/5/21 16:59

author:nzb

生成随机数

import sys
from PyQt5.QtWidgets import QWidget, QApplication, QLabel, QGroupBox, \
    QHBoxLayout, QPushButton, QVBoxLayout, QSpinBox, QLCDNumber
from PyQt5.QtWidgets import QDial
from PyQt5 import QtGui, QtCore
from PyQt5.QtCore import Qt
from random import randint


class UI_demo(QWidget):
    """用户界面"""
    def __init__(self):
        super().__init__()

        # 窗口信息
        self.title = 'PyQt5 QLCDNumber'
        self.left = 600
        self.top = 200
        self.width = 500
        self.height = 500
        self.iconName = '../img/home.ico'

        self.initWindow()

    def initWindow(self):

        # 窗口信息
        self.setWindowIcon(QtGui.QIcon(self.iconName))  # 图标设置
        self.setGeometry(self.left, self.top, self.width, self.height)  # 大小位置设置
        self.setWindowTitle(self.title)  # 窗口标题

        # 随机生成数字
        self.initUI()

        # 展示窗口
        self.show()

    def initUI(self):
        """随机生成数字"""
        vbox = QVBoxLayout()

        self.lcd = QLCDNumber()
        # self.lcd.display(60)  # 显示数字
        self.lcd.setStyleSheet('background-color:green')
        vbox.addWidget(self.lcd)

        self.button = QPushButton('random number generator')
        self.button.setStyleSheet('background-color:yellow')
        self.button.clicked.connect(self.LCDHandler)
        vbox.addWidget(self.button)

        self.setLayout(vbox)

    def LCDHandler(self):
        """随机数字"""
        random = randint(1, 200)
        self.lcd.display(random)  # 显示数字




if __name__ == "__main__":
    app = QApplication(sys.argv)
    ex = UI_demo()
    sys.exit(app.exec_())