python 第7周作业界面

 

import sys
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
################################################
#######创建主窗口
################################################
class MainWindow(QMainWindow):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.setWindowTitle('主界面')
self.showMaximized()

 

################################################
#######对话框
################################################
class logindialog(QDialog):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.setWindowTitle('登录界面')
self.resize(400, 600)
self.setFixedSize(self.width(), self.height())
self.setWindowFlags(Qt.WindowCloseButtonHint)

###### 设置界面控件
self.frame = QFrame(self)
self.verticalLayout = QVBoxLayout(self.frame)

self.lineEdit_account = QLineEdit()
self.lineEdit_account.setPlaceholderText("请输入账号")
self.verticalLayout.addWidget(self.lineEdit_account)

self.lineEdit_password = QLineEdit()
self.lineEdit_password.setPlaceholderText("请输入密码")
self.verticalLayout.addWidget(self.lineEdit_password)

self.pushButton_enter = QPushButton()
self.pushButton_enter.setText("确定")
self.verticalLayout.addWidget(self.pushButton_enter)

self.pushButton_quit = QPushButton()
self.pushButton_quit.setText("取消")
self.verticalLayout.addWidget(self.pushButton_quit)

###### 绑定按钮事件
self.pushButton_enter.clicked.connect(self.on_pushButton_enter_clicked)
self.pushButton_quit.clicked.connect(QCoreApplication.instance().quit)

 

 

def on_pushButton_enter_clicked(self):
# 账号判断
if self.lineEdit_account.text() == "何纪昌" and self.lineEdit_password.text() == "123456":


return 1

# 通过验证，关闭对话框并返回1
self.accept()

 

################################################
#######程序入门
################################################
if __name__ == "__main__":
app = QApplication(sys.argv)
dialog = logindialog()
if dialog.exec_()==QDialog.Accepted:
the_window = MainWindow()
the_window.show()
sys.exit(app.exec_())