面板未添加到主框架
我有一个主框架和 3 个面板。我想将这 3 个面板添加到主框架中。但是，仅添加了其中 2 个。第三个则不然。我不明白为什么。有人可以帮忙吗？
setLayout(new GridBagLayout());
GridBagConstraints gbc=new GridBagConstraints();
gbc.gridwidth=GridBagConstraints.REMAINDER;
gbc.gridheight=GridBagConstraints.RELATIVE;
gbc.anchor=GridBagConstraints.NORTHWEST;
gbc.fill=GridBagConstraints.BOTH;
gbc.weightx=gbc.weighty=1;
add(topPanel1, gbc);
add(bottomPanel1, gbc);
gbc.gridheight=GridBagConstraints.REMAINDER;
add(buttonsPanel, gbc);
上面的代码是一个框架的构造函数。
I have a main frame and 3 panels. I want to add those 3 panels to the main frame. However, only 2 of them are getting added. The third one is not. I am not able to figure out why. Can someone help?
setLayout(new GridBagLayout());
GridBagConstraints gbc=new GridBagConstraints();
gbc.gridwidth=GridBagConstraints.REMAINDER;
gbc.gridheight=GridBagConstraints.RELATIVE;
gbc.anchor=GridBagConstraints.NORTHWEST;
gbc.fill=GridBagConstraints.BOTH;
gbc.weightx=gbc.weighty=1;
add(topPanel1, gbc);
add(bottomPanel1, gbc);
gbc.gridheight=GridBagConstraints.REMAINDER;
add(buttonsPanel, gbc);
the above code is the constructor of a frame.
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您应该根据所需的布局设置
gridx或gridy值。例如，如果您想垂直布局组件，请执行以下操作：
如果您不设置 gridx/y 值，则行为未指定（有时可能有效）。
You should set the
gridxorgridyvalue, according to your desired layout.E.g. if you want to layout the components vertically do something like this:
If you do not set the
gridx/yvalues the behavior is unspecified (sometimes it may work).如果您想逐个添加三个面板，则必须删除
gbc.gridheight=GridBagConstraints.RELATIVE;语句。You have to remove the
gbc.gridheight=GridBagConstraints.RELATIVE;statement if you want to add three panels one after one.