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Listing 23 scripts/PYQT4/01_customize_widget/01_random_background/main.py

# -*- coding: utf-8 -*-

import sys
import random
from PyQt5.QtWidgets import QApplication, QWidget
from PyQt5.QtGui import QPalette, QColor

class ColorChangingWidget(QWidget):
    def __init__(self):
        super(ColorChangingWidget, self).__init__()

        self.init_ui()

    def init_ui(self):
        self.setWindowTitle('Click to Change Color')
        self.setGeometry(100, 100, 400, 300)

    def mousePressEvent(self, event):
        # 무작위 색상으로 배경색 설정
        random_color = QColor(random.randint(0, 255), random.randint(0, 255), random.randint(0, 255))

        palette = self.palette()
        palette.setColor(QPalette.Window, random_color)
        self.setPalette(palette)

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

In this example, a custom widget, ColorChangingWidget, is created by inheriting from QWidget.

• By overriding the mousePressEvent method, it implements the functionality to change the widget’s background color to a random color every time the widget is clicked.

• The color change is performed using a QPalette object.

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