说明
1、PyQt是制作GUI应用程序的工具包。Python编程语言与Qt库的成功融合。
Qt库是目前最强大的库之一。PyQt库文件由C++编写,Qt软件用于C++界面开发;Qt是C++库,PyQt是Python的移植版,PyQt是Qt的wrapper。
2、PyQt5是一种先进的语言,在底层实现了窗口的基本功能。
实例
import sys from PyQt5 import QtCore, QtGui, QtWidgets from PyQt5.QtWidgets import* from PyQt5.QtCore import* from Dialog.HttpLogin import HttpPost class Ui_dialog(QWidget): def __init__(self): super().__init__() self.setupUi() #界面绘制交给InitUi方法 def setupUi(self): self.setObjectName("学生登录界面") self.resize(535, 344) font = QtGui.QFont() font.setFamily("Arial") font.setPointSize(14) #注意变量定义的先后顺序 self.lineEdit = QtWidgets.QLineEdit(self) self.lineEdit.setGeometry(QtCore.QRect(190, 100, 231, 31)) self.lineEdit.setObjectName("lineEdit") #将其设为密码输入框 self.lineEdit_2 = QtWidgets.QLineEdit(self) self.lineEdit_2.setEchoMode(QtWidgets.QLineEdit.Password) self.lineEdit_2.setGeometry(QtCore.QRect(190, 150, 231, 31)) self.lineEdit_2.setObjectName("lineEdit_2") #禁止窗口变化(最上方的设置) self.setWindowFlags(QtCore.Qt.WindowCloseButtonHint) self.setFont(font) self.pushButton = QtWidgets.QPushButton(self) self.pushButton.setGeometry(QtCore.QRect(100, 280, 93, 28)) self.pushButton.setObjectName("pushButton") #给取消按钮添加了响应事件 self.pushButton.clicked.connect(QCoreApplication.instance().quit) #确认按钮 self.pushButton_2 = QtWidgets.QPushButton(self) self.pushButton_2.setGeometry(QtCore.QRect(340, 280, 93, 28)) self.pushButton_2.setObjectName("pushButton_2") self.pushButton_2.clicked.connect(self.forlogin)#带参数默认执行 不带参数点击执行 self.label = QtWidgets.QLabel(self) self.label.setGeometry(QtCore.QRect(90, 100, 72, 21)) self.label.setObjectName("label") self.label_2 = QtWidgets.QLabel(self) self.label_2.setGeometry(QtCore.QRect(90, 155, 72, 20)) self.label_2.setObjectName("label_2") self.retranslateUi(self) QtCore.QMetaObject.connectSlotsByName(self) def retranslateUi(self, dialog): _translate = QtCore.QCoreApplication.translate dialog.setWindowTitle(_translate("dialog", "Dialog")) self.pushButton.setText(_translate("dialog", "取消")) self.pushButton_2.setText(_translate("dialog", "确认")) self.label.setText(_translate("dialog", "账号:")) self.label_2.setText(_translate("dialog", "密码:")) def forlogin(self): #获取账号输入框的类容和密码输入框的类容 name = self.lineEdit.text() password = self.lineEdit_2.text() sign = HttpPost.login(name,password) if sign=="true": print("登录成功") self.QCoreApplication.instance().quit#关闭当前窗口 else: print("登录失败") reply = QtWidgets.QMessageBox.question(self,"警告","密码错误请重新登录",QtWidgets.QMessageBox.Yes, QtWidgets.QMessageBox.No) if reply == QtWidgets.QMessageBox.Yes: self.lineEdit_2.setText("") self.lineEdit.setText("") else: self.QCoreApplication.instance().quit#关闭当前窗口 if __name__ == '__main__': app = QApplication(sys.argv) my=Ui_dialog() my.show() sys.exit(app.exec_())
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