PyQt 笔记

贡献者： 待更新

• PyQt 文档。

　　 GPT-4 生成的一个程序

import sys
from PyQt5.QtWidgets import QApplication, QMainWindow, \ 
    QMenu, QMenuBar, QAction, QRadioButton, QVBoxLayout, \ 
    QLabel, QLineEdit, QPushButton, QWidget, QGroupBox
from PyQt5.QtGui import QColor

class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()

        self.initUI()

    def initUI(self):
        # Drop menu
        menubar = self.menuBar()
        fileMenu = menubar.addMenu('File')

        exitAction = QAction('Exit', self)
        exitAction.triggered.connect(self.close)
        fileMenu.addAction(exitAction)

        # Radio buttons (circled single selection)
        self.radio_group = QGroupBox("Color Options")
        self.radio_layout = QVBoxLayout()

        self.red_radio = QRadioButton("Red")
        self.green_radio = QRadioButton("Green")
        self.blue_radio = QRadioButton("Blue")

        self.radio_layout.addWidget(self.red_radio)
        self.radio_layout.addWidget(self.green_radio)
        self.radio_layout.addWidget(self.blue_radio)

        self.radio_group.setLayout(self.radio_layout)

        # Textbox
        self.textbox = QLineEdit(self)
        self.textbox.setPlaceholderText("Enter text here")

        # Button to display the text
        self.button = QPushButton("Display Text", self)
        self.button.clicked.connect(self.on_click)

        # Label to display the text
        self.result_label = QLabel("")

        # Main layout
        self.layout = QVBoxLayout()
        self.layout.addWidget(self.radio_group)
        self.layout.addWidget(self.textbox)
        self.layout.addWidget(self.button)
        self.layout.addWidget(self.result_label)

        self.container = QWidget()
        self.container.setLayout(self.layout)
        self.setCentralWidget(self.container)

        self.setWindowTitle('PyQt5 GUI Demo')
        self.setGeometry(300, 300, 300, 200)

    def on_click(self):
        text = self.textbox.text()

        if self.red_radio.isChecked():
            color = QColor(255, 0, 0)
        elif self.green_radio.isChecked():
            color = QColor(0, 255, 0)
        elif self.blue_radio.isChecked():
            color = QColor(0, 0, 255)
        else:
            color = QColor(0, 0, 0)

        self.result_label.setText(text)
        self.result_label.setStyleSheet(f"color: rgb({color.red()},
            {color.green()}, {color.blue()});")

if __name__ == '__main__':
    app = QApplication(sys.argv)
    window = MainWindow()
    window.show()
    sys.exit(app.exec_())