java中的Gridbaglayout

Question

我必须编辑一个有问题的网格布局，我的结果很奇怪 预计：
| A | | B |
| - | | C |
| D | | - |

结果：
| A | | B |
| D | | C |

A和C的高度为2 这是格子袋的工作原理吗？无论如何迫使它？

我的程序有两列和n行。它支持2的宽度，但只有在第一个col时它才会生效。如果在第2行，它就像宽度为1一样。

gbc.gridx = 0;
gbc.gridy = 0;
gbc.gridheight = 1;
gbc.gridwidth = 1;
gbc.weighty = 1;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(7, 7, 7, 7);
gbc.weightx = 0.5;
gbc.anchor = GridBagConstraints.NORTH;

组件由用户添加，用户确定width和height。 gridx和gridy值取决于添加和放置的其他组件。

格子袋布局适用于说
* _ _
| A | B |
| _ | C |
当C的高度为2

时，它似乎不喜欢它

Answer 1

确保为正在使用的GridbagConstraints.BOTH对象的fill属性设置GridbagConstraints。否则，您将无法在多行上拥有组件。

GridbagConstraints c = new GridbagConstraints();
c.fill = GridbagConstraints.BOTH;

Answer 2

现在问题已经澄清了：

protected static final Insets entryInsets = new Insets(0, 10, 4, 10);
protected static final Insets spaceInsets = new Insets(10, 10, 4, 10);

protected void createPartControl() {
    panel = new JPanel();
    panel.setLayout(new GridBagLayout());

    int gridy = 0;
    gridy = createTextFields(gridy);
}

protected int createTextFields(int gridy) {
    JLabel a = new JLabel("A");
    a.setHorizontalAlignment(SwingConstants.LEFT);
    addComponent(panel, a, 0, gridy, 1, 2, spaceInsets,
            GridBagConstraints.LINE_START, GridBagConstraints.HORIZONTAL);

    JLabel b = new JLabel("B");
    b.setHorizontalAlignment(SwingConstants.LEFT);
    addComponent(panel, b, 1, gridy++, 1, 1, spaceInsets,
            GridBagConstraints.LINE_START, GridBagConstraints.HORIZONTAL);

    JLabel c = new JLabel("C");
    c.setHorizontalAlignment(SwingConstants.LEFT);
    addComponent(panel, c, 1, gridy++, 1, 1, entryInsets,
            GridBagConstraints.LINE_START, GridBagConstraints.HORIZONTAL);

    JLabel d = new JLabel("D");
    d.setHorizontalAlignment(SwingConstants.LEFT);
    addComponent(panel, d, 0, gridy++, 2, 1, entryInsets,
            GridBagConstraints.LINE_START, GridBagConstraints.HORIZONTAL);

    return gridy;
}

protected void addComponent(Container container, Component component,
        int gridx, int gridy, int gridwidth, int gridheight, 
        Insets insets, int anchor, int fill) {
    GridBagConstraints gbc = new GridBagConstraints(gridx, gridy,
            gridwidth, gridheight, 1.0D, 1.0D, anchor, fill, insets, 0, 0);
    container.add(component, gbc);
}