static boolean showWindow( Window window, int cmd ) {
		if( !isSupported() )
			return false;

		return nativeProvider.showWindow( window, cmd );
	}
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