private static boolean useWindowDecorations( JRootPane rootPane ) {
		return FlatUIUtils.getBoolean( rootPane,
			FlatSystemProperties.USE_WINDOW_DECORATIONS,
			FlatClientProperties.USE_WINDOW_DECORATIONS,
			"TitlePane.useWindowDecorations",
			false );
	}
Support for custom window decorations with native window border.

@author Karl Tauber
@since 1.1
flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatNativeWindowBorder.java