pyqt5实现登录界面的模板

 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(200, 200) 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() == "": return # 密码判断 if self.lineEdit_password.text() == "": return # 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_())