如何实现JAVA窗体的平面化？

Question

什么嘛？！！
不懂就别吹

Answer 1

下面是JFrame类的初始化代码，哪一句是和生成标题栏有关
    protected void frameInit() {
        enableEvents(AWTEvent.KEY_EVENT_MASK | AWTEvent.WINDOW_EVENT_MASK);
        setLocale( JComponent.getDefaultLocale() );
        setRootPane(createRootPane());
        setBackground(UIManager.getColor("control"));
        setRootPaneCheckingEnabled(true);
        if (JFrame.isDefaultLookAndFeelDecorated()) {
            boolean supportsWindowDecorations = 
            UIManager.getLookAndFeel().getSupportsWindowDecorations();
            if (supportsWindowDecorations) {
                setUndecorated(true);
                getRootPane().setWindowDecorationStyle(JRootPane.FRAME);
            }
        }
        setFocusTraversalPolicy(KeyboardFocusManager.
                                getCurrentKeyboardFocusManager().
                                getDefaultFocusTraversalPolicy());        
    }