Question

此红色框应仅为屏幕高度的1/6。我根本无法让红色框的高度减少。如何修复所有这些高度？ http://i.imgur.com/2lN2HxK.png

package urAPackage;

import urAPackage.GUIcompos;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.Image;
import java.awt.Insets;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

public class Sweg extends GUIcompos {

public void setGUI(){

    try {
        UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
    } catch (Exception e) {
        e.printStackTrace();
    }

    f = new JFrame("Wow sweg");

        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.setTitle("Da calculatorrrrr");
        image = new ImageIcon(f.getClass().getResource("/UrAPackage/sweg.png")).getImage();
        f.setIconImage(image);
        f.setContentPane(new JLabel(new ImageIcon(f.getClass().getResource("/UrAPackage/bg.jpg"))));
        f.setSize(399, 599);
        f.setSize(400, 600);
        f.setResizable(false);
        f.setLayout(new BorderLayout());
        f.setLocationRelativeTo(null);

    pMain = new JPanel();
        pMain.setLayout(new GridBagLayout());
            gbc = new GridBagConstraints();
        pMain.setPreferredSize(new Dimension(400,600));
        pMain.setOpaque(false);
        f.add(pMain, BorderLayout.CENTER);

    pCent = new JPanel();
        pCent.setLayout(pCentMGR = new GridLayout(4, 3, 10, 5));
        pCent.setOpaque(false);
        pCent.add(cBtn7 = new JButton("7"));
        pCent.add(cBtn8 = new JButton("8"));
        pCent.add(cBtn9 = new JButton("9"));
        pCent.add(cBtn4 = new JButton("4"));
        pCent.add(cBtn5 = new JButton("5"));
        pCent.add(cBtn6 = new JButton("6"));
        pCent.add(cBtn1 = new JButton("1"));
        pCent.add(cBtn2 = new JButton("2"));
        pCent.add(cBtn3 = new JButton("3"));
        pCent.add(cBtn0 = new JButton("0"));
        pCent.add(cBtnP = new JButton("."));
        pCent.add(cBtnN = new JButton("(-)"));
    pTop = new JPanel();
        pTop.setBackground(new Color(255, 0, 0));

    pLeft = new JPanel();
        pLeft.setBackground(Color.blue);

    pRight = new JPanel();
        pRight.setBackground(Color.yellow);

    pOutput = new JPanel();
        pOutput.setBackground(Color.green);

        //P MAIN GRID SET UP
        gbc.weightx = gbc.weighty = 1.0;
        gbc.gridx = 0;
        gbc.gridy= 0;
        gbc.gridheight = 1;
        gbc.gridwidth = 6;
        gbc.fill = GridBagConstraints.BOTH;
    pMain.add(pTop, gbc);
        gbc.gridx = 0;
        gbc.gridy= 1;
        gbc.gridheight = 5;
        gbc.gridwidth = 1;
    pMain.add(pLeft, gbc);
        gbc.gridx = 1;
        gbc.gridwidth = 4;
        gbc.insets = new Insets(6,6,6,6);
    pMain.add(pCent, gbc);
        gbc.gridx = 5;
        gbc.gridwidth = 1;
        gbc.insets = new Insets(0,0,0,0);
    pMain.add(pRight, gbc);
        gbc.gridx = 0;
        gbc.gridy= 6;
        gbc.gridheight = 1;
        gbc.gridwidth = 6;
    pMain.add(pOutput, gbc);

    f.setVisible(true);

}
}

由于

Ehem，忽略这一点，它只是让我提供更多关于代码的上下文，但问题是直截了当的......所以，如果你喜欢lol那个包名，那就是我做过的第一个包的名字。班上的一位朋友看到了它，笑死了，所以从那时起就一直如此。

Answer 1

您的JFrame应使用布局来规定相关面板的大小。然后，您可以通过调整GridBagLayout：columnWidths，rowHeights，columnWeights和rowWeights的公共字段来调整行和列的权重。< / p>

例如：

JFrame with a GridBagLayout

import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.GridBagLayout;
import java.awt.GridBagConstraints;
import java.awt.Insets;

public class GridBagLayoutExample extends JFrame {
    private static final long serialVersionUID = 1L;
    private JPanel contentPane;

    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    GridBagLayoutExample frame = new GridBagLayoutExample();
                    frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    public GridBagLayoutExample() {
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setPreferredSize(new Dimension(450, 450));
        contentPane = new JPanel();
        contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
        setContentPane(contentPane);
        GridBagLayout gbl_contentPane = new GridBagLayout();
        gbl_contentPane.columnWidths = new int[] { 0, 0, 0, 0 };
        gbl_contentPane.rowHeights = new int[] { 0, 0, 0, 0 };
        gbl_contentPane.columnWeights = new double[] { 1.0, 6.0, 1.0, Double.MIN_VALUE };
        gbl_contentPane.rowWeights = new double[] { 1.0, 6.0, 1.0, Double.MIN_VALUE };
        contentPane.setLayout(gbl_contentPane);

        JPanel top = new JPanel();
        top.setBackground(Color.RED);
        GridBagConstraints gbc_top = new GridBagConstraints();
        gbc_top.gridwidth = 3;
        gbc_top.insets = new Insets(0, 0, 5, 5);
        gbc_top.fill = GridBagConstraints.BOTH;
        gbc_top.gridx = 0;
        gbc_top.gridy = 0;
        contentPane.add(top, gbc_top);

        JPanel left = new JPanel();
        left.setBackground(Color.BLUE);
        GridBagConstraints gbc_left = new GridBagConstraints();
        gbc_left.insets = new Insets(0, 0, 5, 5);
        gbc_left.fill = GridBagConstraints.BOTH;
        gbc_left.gridx = 0;
        gbc_left.gridy = 1;
        contentPane.add(left, gbc_left);

        JPanel middle = new JPanel();
        middle.setBackground(Color.BLACK);
        GridBagConstraints gbc_middle = new GridBagConstraints();
        gbc_middle.insets = new Insets(0, 0, 5, 5);
        gbc_middle.fill = GridBagConstraints.BOTH;
        gbc_middle.gridx = 1;
        gbc_middle.gridy = 1;
        contentPane.add(middle, gbc_middle);

        JPanel right = new JPanel();
        right.setBackground(Color.YELLOW);
        GridBagConstraints gbc_right = new GridBagConstraints();
        gbc_right.insets = new Insets(0, 0, 5, 0);
        gbc_right.fill = GridBagConstraints.BOTH;
        gbc_right.gridx = 2;
        gbc_right.gridy = 1;
        contentPane.add(right, gbc_right);

        JPanel bottom = new JPanel();
        bottom.setBackground(Color.GREEN);
        GridBagConstraints gbc_bottom = new GridBagConstraints();
        gbc_bottom.insets = new Insets(0, 0, 0, 5);
        gbc_bottom.gridwidth = 3;
        gbc_bottom.fill = GridBagConstraints.BOTH;
        gbc_bottom.gridx = 0;
        gbc_bottom.gridy = 2;
        contentPane.add(bottom, gbc_bottom);

        pack();
    }

}

GridBagLayout没有正确调整高度？

1 个答案: