说明
1、Python编程语言与Qt库的成功融合，是制作GUI应用程序的工具包。
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++Python是Python的移植版，PyQt是Qtwrapper。
2、PyQT5是一种在底层实现窗口基本功能的先进语言。
实例
importsys
fromPyQT5importQtCore,QtGui,QtWidgets
fromPyQT5.QtWidgetsimport*
fromPyQT5.QtCoreimport*
fromDialog.HttpLoginimportHttpPost
classUi_dialog(QWidget):
def__init__(self):
super().__init__()
self.setupUi()#界面绘制交给Initui的方法
defsetupUi(self):
self.setObjectName("学生登录界面")
self.resize(535,344)
font=QtGui.QFont()
font.setFamily("Arial")
font.setPointSize(14)
#注意变量定义的顺序
self.lineEdit=QtWidgets.QLineEdit(self)
self.lineEdit.setGeometry(QtCore.QRect(190,100,231,31))
self.lineEdit.setObjectName("lineEdit")
#将其设置为密码输入框
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")
#禁止窗户变化(顶部设置)
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")
#取消按钮添加响应事件
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)#默认执行带参数没有参数，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)
defretranslateUi(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："))
defforlogin(self):
#获取帐户输入框和密码输入框的类容
name=self.lineEdit.text()
password=self.lineEdit_2.text()
sign=HttpPost.login(name,password)
ifsign=="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","请重新登录密码错误",QtWidgets.QMessageBox.Yes,QtWidgets.QMessageBox.No)
ifreply==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_())以上是python PyQT5实现窗口功能的方法，希望对大家有所帮助。更多Python学习指导：python基础教程
本文教程操作环境：windows7系统Python 3.9.1，DELL G3电脑。