Designing a modern desktop application with a dark mode feature is a great way to enhance user experience. Here's how you can implement it using both PyQt6 and PySide6: PyQt6: ```python import sys from PyQt6.QtWidgets import QApplication, QWidget from PyQt6.QtGui import QColor class DarkModeApp(QWidget): def __init__(self): super().__init__() self.setWindowTitle("Dark Mode Example") self.setGeometry(100, 100, 800, 600) self.setStyleSheet(""" QWidget { background-color: #121212; color: #E0E0E0; } QPushButton { background-color: #333333; color: #FFFFFF; border: none; border-radius: 5px; } QPushButton:hover { background-color: #444444; } """) if __name__ == "__main__": app = QApplication(sys.argv) window = DarkModeApp() window.show() sys.exit(app.exec()) ``` PySide6: ```python import sys from PySide6.QtWidgets import QApplication, QWidget from PySide6.QtGui import QColor class DarkModeApp(QWidget): def __init__(self): super().__init__() self.setWindowTitle("Dark Mode Example") self.setGeometry(100, 100, 800, 600) self.setStyleSheet(""" QWidget { background-color: #121212; color: #E0E0E0; } QPushButton { background-color: #333333; color: #FFFFFF; border: none; border-radius: 5px; } QPushButton:hover { background-color: #444444; } """) if __name__ == "__main__": app = QApplication(sys.argv) window = DarkModeApp() window.show() sys.exit(app.exec()) ``` Both examples create a simple window with a dark mode theme applied. You can customize the styles as needed for your application. For more advanced tutorials and tips on desktop design and development, visit our YouTube channel at https://www.youtube.com/@SpinnTv or our website at https://www.spinncode.com.