53 * <p style="text-align:center"><img src="doc-files/JRootPane-1.gif"
54 * alt="The following text describes this graphic."
55 * HEIGHT=484 WIDTH=629></p>
56 * The "heavyweight" components (those that delegate to a peer, or native
57 * component on the host system) are shown with a darker, heavier box. The four
58 * heavyweight JFC/Swing containers (<code>JFrame</code>, <code>JDialog</code>,
59 * <code>JWindow</code>, and <code>JApplet</code>) are
60 * shown in relation to the AWT classes they extend.
61 * These four components are the
62 * only heavyweight containers in the Swing library. The lightweight container
63 * <code>JInternalFrame</code> is also shown.
64 * All five of these JFC/Swing containers implement the
65 * <code>RootPaneContainer</code> interface,
66 * and they all delegate their operations to a
67 * <code>JRootPane</code> (shown with a little "handle" on top).
68 * <blockquote>
69 * <b>Note:</b> The <code>JComponent</code> method <code>getRootPane</code>
70 * can be used to obtain the <code>JRootPane</code> that contains
71 * a given component.
72 * </blockquote>
73 * <table style="float:right" border="0" summary="layout">
74 * <tr>
75 * <td style="text-align:center">
76 * <img src="doc-files/JRootPane-2.gif"
77 * alt="The following text describes this graphic." HEIGHT=386 WIDTH=349>
78 * </td>
79 * </tr>
80 * </table>
81 * The diagram at right shows the structure of a <code>JRootPane</code>.
82 * A <code>JRootpane</code> is made up of a <code>glassPane</code>,
83 * an optional <code>menuBar</code>, and a <code>contentPane</code>.
84 * (The <code>JLayeredPane</code> manages the <code>menuBar</code>
85 * and the <code>contentPane</code>.)
86 * The <code>glassPane</code> sits over the top of everything,
87 * where it is in a position to intercept mouse movements.
88 * Since the <code>glassPane</code> (like the <code>contentPane</code>)
89 * can be an arbitrary component, it is also possible to set up the
90 * <code>glassPane</code> for drawing. Lines and images on the
91 * <code>glassPane</code> can then range
92 * over the frames underneath without being limited by their boundaries.
93 * <p>
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53 * <p style="text-align:center"><img src="doc-files/JRootPane-1.gif"
54 * alt="The following text describes this graphic."
55 * HEIGHT=484 WIDTH=629></p>
56 * The "heavyweight" components (those that delegate to a peer, or native
57 * component on the host system) are shown with a darker, heavier box. The four
58 * heavyweight JFC/Swing containers (<code>JFrame</code>, <code>JDialog</code>,
59 * <code>JWindow</code>, and <code>JApplet</code>) are
60 * shown in relation to the AWT classes they extend.
61 * These four components are the
62 * only heavyweight containers in the Swing library. The lightweight container
63 * <code>JInternalFrame</code> is also shown.
64 * All five of these JFC/Swing containers implement the
65 * <code>RootPaneContainer</code> interface,
66 * and they all delegate their operations to a
67 * <code>JRootPane</code> (shown with a little "handle" on top).
68 * <blockquote>
69 * <b>Note:</b> The <code>JComponent</code> method <code>getRootPane</code>
70 * can be used to obtain the <code>JRootPane</code> that contains
71 * a given component.
72 * </blockquote>
73 *
74 * <table class="borderless" style="float:right">
75 * <caption>Example</caption>
76 * <tr>
77 * <td style="text-align:center">
78 * <img src="doc-files/JRootPane-2.gif"
79 * alt="The following text describes this graphic." HEIGHT=386 WIDTH=349>
80 * </td>
81 * </tr>
82 * </table>
83 * The diagram at right shows the structure of a <code>JRootPane</code>.
84 * A <code>JRootpane</code> is made up of a <code>glassPane</code>,
85 * an optional <code>menuBar</code>, and a <code>contentPane</code>.
86 * (The <code>JLayeredPane</code> manages the <code>menuBar</code>
87 * and the <code>contentPane</code>.)
88 * The <code>glassPane</code> sits over the top of everything,
89 * where it is in a position to intercept mouse movements.
90 * Since the <code>glassPane</code> (like the <code>contentPane</code>)
91 * can be an arbitrary component, it is also possible to set up the
92 * <code>glassPane</code> for drawing. Lines and images on the
93 * <code>glassPane</code> can then range
94 * over the frames underneath without being limited by their boundaries.
95 * <p>
|