如何让GridBagLayout定位左上角
问题描述:
我想让gridbaglayout在我的JFrame的左上角开始。我试图使用JFrame内的面板来解决问题。它不起作用,它给了我和以前一样的结果。我得到我想要放置在左上角的面板,它始于中心并始终离开。 GUI problem picture 这是我的课程和代码。如何让GridBagLayout定位左上角
public class GraphMatchApp extends JApplet implements ActionListener
{
private JFrame mFrame;
private JPanel mBusinessPanel;
private JPanel mItemsPanel;
private JTabbedPane mTabbedPane;
private JPanel mFramePanel;
GridBagConstraints mGridBagConstaints;
public GraphMatchApp()
{
prepairMainFrame();
prepairBusinessPanel();
mGridBagConstaints.fill = GridBagConstraints.HORIZONTAL;
mGridBagConstaints.weightx = 0.5;
mGridBagConstaints.gridx = 0;
mGridBagConstaints.gridy = 0;
mGridBagConstaints.anchor = GridBagConstraints.FIRST_LINE_START;
mFramePanel.add(mBusinessPanel,mGridBagConstaints);
mFrame.setVisible(true);
}
public void prepairMainFrame()
{
mFrame = new JFrame();
mFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
mFrame.setTitle("Test");
mFrame.setSize(400,200);
mFramePanel = new JPanel();
mFramePanel.setLayout(new GridBagLayout());
mFrame.add(mFramePanel, BorderLayout.LINE_START);
mGridBagConstaints = new GridBagConstraints();
}
public void prepairBusinessPanel()
{
mBusinessPanel = new JPanel();
Border border = BorderFactory.createEtchedBorder();
border = BorderFactory.createTitledBorder(border,"What is your ?");
mBusinessPanel.setBorder(border);
JRadioButton logisticsButton = new JRadioButton("Logistics");
logisticsButton.setMnemonic(KeyEvent.VK_L);
logisticsButton.setActionCommand("SelectionLogistics");
logisticsButton.setSelected(false);
JRadioButton healthCareButton = new JRadioButton("Health care");
healthCareButton.setMnemonic(KeyEvent.VK_H);
healthCareButton.setActionCommand("SelectionHealthCare");
healthCareButton.setSelected(false);
JRadioButton transportationButton = new JRadioButton("Transp");
transportationButton.setMnemonic(KeyEvent.VK_T);
transportationButton.setActionCommand("SelectionTransportation");
transportationButton.setSelected(false);
ButtonGroup group = new ButtonGroup();
group.add(logisticsButton);
group.add(healthCareButton);
group.add(transportationButton);
logisticsButton.addActionListener(this);
healthCareButton.addActionListener(this);
transportationButton.addActionListener(this);
mBusinessPanel.add(logisticsButton);
mBusinessPanel.add(healthCareButton);
mBusinessPanel.add(transportationButton);
}
public static void main(String[] args)
{
new GraphMatchApp();
}
答
在你的构造,设置mGridBagConstaints.weighty = 0.5;
面板,然后只需要一半的帧的可用空间。
它的工作,问题解决了。感谢您的时间。 – Jerry
很高兴我能帮忙;)请考虑接受这个答案,以帮助其他有同样问题的人找到解决方案。干杯 –