网格袋布局不会填充按钮

Question

我有这段代码

//Create the single player panel
    singlePlayerPanel.setLayout(new GridBagLayout());
    GridBagConstraints gbc = new GridBagConstraints(); 
    gbc.insets = new Insets(1,1,1,1);
    JLabel STypeOfGameLabel = new JLabel("Type Of Game:");
    gbc.gridx=0;
    gbc.gridy=0;
    singlePlayerPanel.add(STypeOfGameLabel,gbc);
    JComboBox STypeOfGameCombobox = new JComboBox(new String[] {"Normal (12*2 cards)", "Double (24*2 cards)"});
    gbc.gridx=1;
    gbc.gridy=0;
    singlePlayerPanel.add(STypeOfGameCombobox,gbc);
    JCheckBox SShowRandomly = new JCheckBox("Show Randomly");
    gbc.gridx=0;
    gbc.gridy=2;
    gbc.gridwidth=2;
    singlePlayerPanel.add(SShowRandomly,gbc);
    JCheckBox SSwap = new JCheckBox("Swap");
    gbc.gridx=0;
    gbc.gridy=3;
    gbc.gridwidth=2;
    singlePlayerPanel.add(SSwap,gbc);
    JCheckBox SCertainOrder = new JCheckBox("CertainOrder");
    gbc.gridx=0;
    gbc.gridy=4;
    gbc.gridwidth=2;
    singlePlayerPanel.add(SCertainOrder,gbc);
    JButton SPlay = new JButton("PLAY");
    gbc.gridx=0;
    gbc.gridy=5;
    gbc.gridwidth=2;
    gbc.gridheight=3;//DOESN'T WORK
    gbc.fill=GridBagConstraints.VERTICAL;
    gbc.fill=GridBagConstraints.HORIZONTAL;
    singlePlayerPanel.add(SPlay,gbc);
    JButton SBack = new JButton("Back");
    gbc.gridx=0;
    gbc.gridy=8;
    gbc.gridheight=3;
    singlePlayerPanel.add(SBack,gbc);

SPlay按钮不会变大。

我不知道我做错了什么。如果我在任何复选框上都可以使用它，但是在这个按钮上没有。

P.S Java新手

Answer 1

我需要的就是把

gbc.ivory=50;

而不是

gbc.gridheight=3;

使组件变高。