如何...与MigLayout

Question

我正在尝试创建一个看起来像这样的布局:

+---+--------+---+
|   |        |   |
|   |        |   |
+---+        +---+
|   |        |   |
|   |        |   |
+---+--------+---+

中央细胞应该是其他细胞的两倍.我正在尝试使用这样的代码实现此目的:

    val panel = new JPanel(new MigLayout("debug", "grow","grow" ))
    panel.add(new JPanel)
    panel.add(new JPanel, "span 2 2")
    panel.add(new JPanel, "wrap")
    panel.add(new JPanel)
    panel.add(new JPanel)

但结果我所有的细胞都有相同的宽度:

+----+----+----+
|    |    |    |
|    |    |    |
+----+    +----+
|    |    |    |
|    |    |    |
+----+----+----+

我做错了什么？我正在使用Scala,但我不认为这里存在问题.

更新 也许有人可以解释为什么这不起作用.即使我尝试从QuickStart指南中重现示例,它也不起作用:

alt text http://www.freeimagehosting.net/uploads/d306693273.png

我的代码:

    val panel = new JPanel(new MigLayout("debug", "grow","grow" ))
    wrapTab.add(new JPanel)
    wrapTab.add(new JPanel, "span 2 2")
    wrapTab.add(new JPanel, "wrap")
    wrapTab.add(new JPanel)
    wrapTab.add(new JPanel, "wrap")
    wrapTab.add(new JPanel)
    wrapTab.add(new JPanel)

结果所有cols都有相同的大小.

Answer 1

val panel = new JPanel(new MigLayout("debug", 
              "[grow 25][grow 50][grow 25]","grow" ))
panel.add(new JPanel)
panel.add(new JPanel, "spany 2")
panel.add(new JPanel, "wrap")
panel.add(new JPanel)
panel.add(new JPanel)