[PyQt6] PartⅡ. QVBoxLayout

Event Handling(Signal and Slots)

from PyQt6.QtWidgets import QApplication, QWidget, QPushButton, QLabel, QHBoxLayout
from PyQt6.QtGui import QIcon, QFont
import sys

class Window(QWidget):
    def __init__(self):
        super().__init__()

        self.setGeometry(200, 200, 700, 400) # 设置窗口大小
        self.setWindowTitle("Python Event Handling")
        self.setWindowIcon(QIcon('images/example.jpg')) # 设置图片，没有的话不显示
        self.label = QLabel("Default Text")
        self.create_widget()

    def create_widget(self):
        hbox = QHBoxLayout()
        btn = QPushButton("Change Text")
        btn.clicked.connect(self.clicked_btn)

        hbox.addWidget(btn)
        hbox.addWidget(self.label)

        self.setLayout(hbox)

    def clicked_btn(self): # 定义一个点击后应该发什么什么的函数
        self.label.setText("Another Text")
        self.label.setFont(QFont("Times", 15))
        self.label.setStyleSheet('color: red')


app = QApplication(sys.argv)
window = Window()
window.show()
sys.exit(app.exec())