pyqt5登陆界面教程

以下是一个简单的使用PyQt5实现的登陆界面教程，希望能对你有帮助。

1.导入需要的库

from PyQt5.QtWidgets import QApplication, QWidget, QLabel, QLineEdit, QPushButton, QVBoxLayout, QHBoxLayout

2.创建窗口

app = QApplication([])
window = QWidget()
window.setWindowTitle('Login')

3.创建界面组件

username_label = QLabel('Username')
username_input = QLineEdit()

password_label = QLabel('Password')
password_input = QLineEdit()
password_input.setEchoMode(QLineEdit.Password)

login_button = QPushButton('Login')

4.将组件添加到布局中

layout = QVBoxLayout()
layout.addWidget(username_label)
layout.addWidget(username_input)
layout.addWidget(password_label)
layout.addWidget(password_input)

button_layout = QHBoxLayout()
button_layout.addStretch()
button_layout.addWidget(login_button)
layout.addLayout(button_layout)

window.setLayout(layout)

5.添加登陆按钮的点击事件

def login():
    username = username_input.text()
    password = password_input.text()

    # 这里可以添加登陆逻辑，比如验证用户名和密码是否正确

login_button.clicked.connect(login)

6.显示界面

window.show()
app.exec_()

完整代码如下：

from PyQt5.QtWidgets import QApplication, QWidget, QLabel, QLineEdit, QPushButton, QVBoxLayout, QHBoxLayout

app = QApplication([])
window = QWidget()
window.setWindowTitle('Login')

username_label = QLabel('Username')
username_input = QLineEdit()

password_label = QLabel('Password')
password_input = QLineEdit()
password_input.setEchoMode(QLineEdit.Password)

login_button = QPushButton('Login')

layout = QVBoxLayout()
layout.addWidget(username_label)
layout.addWidget(username_input)
layout.addWidget(password_label)
layout.addWidget(password_input)

button_layout = QHBoxLayout()
button_layout.addStretch()
button_layout.addWidget(login_button)
layout.addLayout(button_layout)

window.setLayout(layout)

def login():
    username = username_input.text()
    password = password_input.text()

    # 这里可以添加登陆逻辑，比如验证用户名和密码是否正确

login_button.clicked.connect(login)

window.show()
app.exec_()

希望这个教程对你有帮助。