In Qt 6.8, you can determine if a style supports a switchable color scheme by checking the QStyle class and its associated QPalette. While there is no direct method to query a style for dark mode support, you can infer it by examining the QPalette for the style in use.

Here’s a simple approach to check if a style can be switched to dark mode:

from PyQt6.QtWidgets import QApplication, QStyleFactory from PyQt6.QtGui import QPalette

def has_dark_mode(style_name): style = QStyleFactory.create(style_name) palette = style.standardPalette()

Check if the palette has a dark mode variant return palette.color(QPalette.ColorRole.Window).value() < 128 # Example threshold

Example usage app = QApplication([])

styles = QStyleFactory.keys() for style in styles: if has_dark_mode(style): print(f"{style} supports dark mode.") else: print(f"{style} does not support dark mode.")

This code snippet checks the brightness of the window color in the standard palette. If the value is below a certain threshold, it suggests that the style may support a dark mode.

Regarding hardcoding, while it may be necessary for styles like "windowsvista," most styles on Linux and macOS do support switchable color schemes. However, testing on those platforms is recommended for confirmation.