main_window.py 文件源码

def _load_custom_css(self):
        css_filepath = pathlib.Path(__file__).parent.joinpath("gui_style.css")
        with css_filepath.open("rb") as css_file:
            css_data = css_file.read()

        style_provider = Gtk.CssProvider()
        style_provider.load_from_data(css_data)

        Gtk.StyleContext.add_provider_for_screen(
                Gdk.Screen.get_default(), style_provider,
                Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION
        )