import sys
from PyQt5.QtWidgets import (QApplication, QWidget, QPushButton, QLabel, QLineEdit, QGridLayout, QMessageBox)
class LoginForm(QWidget):
def __init__(self):
super().__init__()
self.setWindowTitle('LoginForm')
self.resize(500,120)
layout = QGridLayout()
label_name = QLabel('<font size = "4"> Username </font>')
self.LineEdit_username = QLineEdit()
self.LineEdit_username.setPlaceholderText('Enter your username:')
layout.addWidget(label_name, 0, 0)
layout.addWidget(self.LineEdit_username, 0, 1)
label_name = QLabel('<font size = "4"> Password </font>')
self.LineEdit_password = QLineEdit()
self.LineEdit_password.setPlaceholderText('Enter your password:')
layout.addWidget(label_name, 1, 0)
layout.addWidget(self.LineEdit_password, 1, 1)
button_login = QPushButton('Login')
button_login.clicked.connect(self.check_password)
layout.addWidget(button_login, 2, 0, 1, 2)
layout.setRowMinimumHeight(2, 75)
button_register = QPushButton('Register')
button_register.clicked.connect(self.registration_form)
layout.addWidget(button_register, 3, 0, 1,2)
layout.setRowMinimumHeight(1, 75)
self.setLayout(layout)
def check_password(self):
msg = QMessageBox()
if self.LineEdit_username.text() == 'Roman' and self.LineEdit_password.text() == '1234':
msg.setText('Success')
msg.exec_()
app.quit()
else:
msg.setText('Error')
msg.exec_()
class RegistrationForm(QWidget):
def __init__(self):
super().__init__()
self.setWindowTitle('RegistrationForm')
self.resize(500,120)
reg.QGridLayout()
label_name = QLabel('<font size = "4"> Username </font>')
self.LineEdit_username = QLineEdit()
self.LineEdit_username.setPlaceholderText('Enter your username:')
reg.addWidget(label_name, 0, 0)
reg.addWidget(self.LineEdit_username, 0, 1)
self.setLayout(reg)
if __name__ == '__main__':
app = QApplication(sys.argv)
form = LoginForm()
form.show()
sys.exit(app.exec_())