Admin: 1 версия

2010-05-31T15:32:50Z

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== Associate the gridbag constraints with the component ==



<source lang="java">
import java.awt.Container;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
public class Main {
public static void main(String[] argv) throws Exception {
JFrame frame = new JFrame();
Container container = frame.getContentPane();
GridBagLayout gbl = new GridBagLayout();
container.setLayout(gbl);

GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 1;
gbc.gridy = 1;

JButton component = new JButton("a");

gbl.setConstraints(component, gbc);
container.add(component);
frame.pack();
frame.setVisible(true);
}
}</source>



== Create and set a gridbag layout and how to set gridbag constraints ==



<source lang="java">
import java.awt.Container;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
public class Main {
public static void main(String[] argv) throws Exception {
JFrame frame = new JFrame();
Container container = frame.getContentPane();
GridBagLayout gbl = new GridBagLayout();
container.setLayout(gbl);
// Place a component at cell location (1,1)
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 1;
gbc.gridy = 1;

JButton component = new JButton("a");

// Associate the gridbag constraints with the component
gbl.setConstraints(component, gbc);
container.add(component);
frame.pack();
frame.setVisible(true);
}
}</source>



== Getting the Number of Rows and Columns of Cells in a GridBagLayout ==



<source lang="java">
import java.awt.Container;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
public class Main {
public static void main(String[] argv) throws Exception {
JFrame frame = new JFrame();
Container container = frame.getContentPane();
GridBagLayout gbl = new GridBagLayout();
container.setLayout(gbl);
GridBagConstraints gbc = new GridBagConstraints();
JButton component1 = new JButton("a");
JButton component2 = new JButton("b");
gbc.gridx = 1;
gbc.gridy = 1;
gbl.setConstraints(component1, gbc);
container.add(component1);
gbc.gridx = 0;
gbc.gridy = 0;
gbl.setConstraints(component2, gbc);
container.add(component2);
container.add(component1);
container.add(component2);
frame.pack();
frame.setVisible(true);
gbl.layoutContainer(container);
int[][] dim = gbl.getLayoutDimensions();
int cols = dim[0].length;
int rows = dim[1].length;
System.out.println(cols);
System.out.println(rows);
}
}</source>



== Make the component only stretch horizontally ==



<source lang="java">
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
public class Main {
public static void main(String[] argv) throws Exception {
JFrame frame = new JFrame();
GridBagLayout gbl = new GridBagLayout();
frame.setLayout(gbl);
JButton component = new JButton("1");
frame.add(component);
frame.add(new JButton("2"));
gbl.layoutContainer(frame);
GridBagConstraints gbc = new GridBagConstraints();
gbc.fill = GridBagConstraints.HORIZONTAL;
gbl.setConstraints(component, gbc);
frame.add(component);
frame.pack();
frame.setVisible(true);
}
}</source>



== Make the component only stretch vertically ==



<source lang="java">
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
public class Main {
public static void main(String[] argv) throws Exception {
JFrame frame = new JFrame();
GridBagLayout gbl = new GridBagLayout();
frame.setLayout(gbl);
JButton component = new JButton("1");
frame.add(component);
frame.add(new JButton("2"));
gbl.layoutContainer(frame);
GridBagConstraints gbc = new GridBagConstraints();
gbc.fill = GridBagConstraints.VERTICAL;
gbl.setConstraints(component, gbc);
frame.add(component);
frame.pack();
frame.setVisible(true);
}
}</source>



== Make the component on stretchable ==



<source lang="java">
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
public class Main {
public static void main(String[] argv) throws Exception {
JFrame frame = new JFrame();
GridBagLayout gbl = new GridBagLayout();
frame.setLayout(gbl);
JButton component = new JButton("1");
frame.add(component);
frame.add(new JButton("2"));
gbl.layoutContainer(frame);

GridBagConstraints gbc = new GridBagConstraints();

gbc.fill = GridBagConstraints.NONE;

gbl.setConstraints(component, gbc);
frame.add(component);
frame.pack();
frame.setVisible(true);
}
}</source>



== Make the component stretch in both directions ==



<source lang="java">
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
public class Main {
public static void main(String[] argv) throws Exception {
JFrame frame = new JFrame();
GridBagLayout gbl = new GridBagLayout();
frame.setLayout(gbl);
JButton component = new JButton("1");
frame.add(component);
frame.add(new JButton("2"));
gbl.layoutContainer(frame);
GridBagConstraints gbc = new GridBagConstraints();
gbc.fill = GridBagConstraints.BOTH;
gbl.setConstraints(component, gbc);
frame.add(component);
frame.pack();
frame.setVisible(true);
}
}</source>



== Making a GridBagLayout Fill the Container ==



<source lang="java">
import java.awt.GridBagLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
public class Main {
public static void main(String[] argv) throws Exception {
JFrame frame = new JFrame();
GridBagLayout gbl = new GridBagLayout();
frame.setLayout(gbl);
frame.add(new JButton("1"));
frame.add(new JButton("2"));
gbl.layoutContainer(frame);
double[][] weights = gbl.getLayoutWeights();
for (int i = 0; i < 2; i++) {
for (int j = 0; j < weights[i].length; j++) {
weights[i][j] = 1;
}
}
gbl.columnWeights = weights[0];
gbl.rowWeights = weights[1];
frame.pack();
frame.setVisible(true);
}
}</source>



== Place a component at (ith a column weight 1 and a row weight of 2 ==



<source lang="java">
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
public class Main {
public static void main(String[] argv) throws Exception {
JFrame frame = new JFrame();
GridBagLayout gbl = new GridBagLayout();
frame.setLayout(gbl);
JButton component = new JButton("1");
frame.add(component);
frame.add(new JButton("2"));
gbl.layoutContainer(frame);

GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 1;
gbc.weightx = 1;
gbc.weighty = 2;
gbl.setConstraints(component, gbc);

frame.pack();
frame.setVisible(true);
}
}</source>



== Place a component at cell location (1,1) ==



<source lang="java">
import java.awt.Container;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
public class Main {
public static void main(String[] argv) throws Exception {
JFrame frame = new JFrame();
Container container = frame.getContentPane();
GridBagLayout gbl = new GridBagLayout();
container.setLayout(gbl);

GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 1;
gbc.gridy = 1;

JButton component = new JButton("a");

gbl.setConstraints(component, gbc);
container.add(component);
frame.pack();
frame.setVisible(true);
}
}</source>



== Positioning a component in the center of other component using GridbagLayout ==



<source lang="java">
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Label;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Main {
public static void main(String[] argv) {
JFrame demo = new JFrame("GridBag demo, to center a component");
JPanel parentPanel = new JPanel();
GridBagLayout gridbag = new GridBagLayout();
GridBagConstraints constraints = new GridBagConstraints();
constraints.fill = GridBagConstraints.CENTER;
gridbag.setConstraints(parentPanel, constraints);
parentPanel.setLayout(gridbag);
Label centerLabel = new Label(" AAA...");
parentPanel.add(centerLabel);
demo.add(parentPanel);
demo.setSize(500, 500);
demo.setVisible(true);
}
}</source>



== Positions five components within a container, using weights, fill, and relative positioning ==



<source lang="java">
/*
*
* Copyright (c) 1998 Sun Microsystems, Inc. All Rights Reserved.
*
* Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
* modify and redistribute this software in source and binary code form,
* provided that i) this copyright notice and license appear on all copies of
* the software; and ii) Licensee does not utilize the software in a manner
* which is disparaging to Sun.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* This software is not designed or intended for use in on-line control of
* aircraft, air traffic, aircraft navigation or aircraft communications; or in
* the design, construction, operation or maintenance of any nuclear
* facility. Licensee represents and warrants that it will not use or
* redistribute the Software for such purposes.
*/

/*
* ContainerEventDemo.java requires no other files.
*/
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ContainerEvent;
import java.awt.event.ContainerListener;
import java.util.Vector;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
public class ContainerEventDemo extends JPanel implements ContainerListener, ActionListener {
JTextArea display;
JPanel buttonPanel;
JButton addButton, removeButton, clearButton;
Vector<JButton> buttonList;
static final String ADD = "add";
static final String REMOVE = "remove";
static final String CLEAR = "clear";
static final String newline = "\n";
public ContainerEventDemo() {
super(new GridBagLayout());
GridBagLayout gridbag = (GridBagLayout) getLayout();
GridBagConstraints c = new GridBagConstraints();
// Initialize an empty list of buttons.
buttonList = new Vector<JButton>(10, 10);
// Create all the components.
addButton = new JButton("Add a button");
addButton.setActionCommand(ADD);
addButton.addActionListener(this);
removeButton = new JButton("Remove a button");
removeButton.setActionCommand(REMOVE);
removeButton.addActionListener(this);
buttonPanel = new JPanel(new GridLayout(1, 1));
buttonPanel.setPreferredSize(new Dimension(200, 75));
buttonPanel.addContainerListener(this);
display = new JTextArea();
display.setEditable(false);
JScrollPane scrollPane = new JScrollPane(display);
scrollPane.setPreferredSize(new Dimension(200, 75));
clearButton = new JButton("Clear text area");
clearButton.setActionCommand(CLEAR);
clearButton.addActionListener(this);
c.fill = GridBagConstraints.BOTH; // Fill entire cell.
c.weighty = 1.0; // Button area and message area have equal height.
c.gridwidth = GridBagConstraints.REMAINDER; // end of row
gridbag.setConstraints(scrollPane, c);
add(scrollPane);
c.weighty = 0.0;
gridbag.setConstraints(clearButton, c);
add(clearButton);
c.weightx = 1.0; // Add/remove buttons have equal width.
c.gridwidth = 1; // NOT end of row
gridbag.setConstraints(addButton, c);
add(addButton);
c.gridwidth = GridBagConstraints.REMAINDER; // end of row
gridbag.setConstraints(removeButton, c);
add(removeButton);
c.weighty = 1.0; // Button area and message area have equal height.
gridbag.setConstraints(buttonPanel, c);
add(buttonPanel);
setPreferredSize(new Dimension(400, 400));
setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));
}
public void componentAdded(ContainerEvent e) {
displayMessage(" added to ", e);
}
public void componentRemoved(ContainerEvent e) {
displayMessage(" removed from ", e);
}
void displayMessage(String action, ContainerEvent e) {
display.append(((JButton) e.getChild()).getText() + " was" + action
+ e.getContainer().getClass().getName() + newline);
display.setCaretPosition(display.getDocument().getLength());
}
/*
* This could have been implemented as two or three classes or objects, for
* clarity.
*/
public void actionPerformed(ActionEvent e) {
String command = e.getActionCommand();
if (ADD.equals(command)) {
JButton newButton = new JButton("JButton #" + (buttonList.size() + 1));
buttonList.addElement(newButton);
buttonPanel.add(newButton);
buttonPanel.revalidate(); // Make the button show up.
} else if (REMOVE.equals(command)) {
int lastIndex = buttonList.size() - 1;
try {
JButton nixedButton = buttonList.elementAt(lastIndex);
buttonPanel.remove(nixedButton);
buttonList.removeElementAt(lastIndex);
buttonPanel.revalidate(); // Make the button disappear.
buttonPanel.repaint(); // Make the button disappear.
} catch (ArrayIndexOutOfBoundsException exc) {
}
} else if (CLEAR.equals(command)) {
display.setText("");
}
}
/**
* Create the GUI and show it. For thread safety, this method should be
* invoked from the event-dispatching thread.
*/
private static void createAndShowGUI() {
// Create and set up the window.
JFrame frame = new JFrame("ContainerEventDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Create and set up the content pane.
JComponent newContentPane = new ContainerEventDemo();
newContentPane.setOpaque(true); // content panes must be opaque
frame.setContentPane(newContentPane);
// Display the window.
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
// Schedule a job for the event-dispatching thread:
// creating and showing this application"s GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}</source>



== Setting Stretchyness of a GridBagLayout Using Fill ==



<source lang="java">
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
public class Main {
public static void main(String[] argv) throws Exception {
JFrame frame = new JFrame();
GridBagLayout gbl = new GridBagLayout();
frame.setLayout(gbl);
JButton component = new JButton("1");
frame.add(component);
frame.add(new JButton("2"));
gbl.layoutContainer(frame);

GridBagConstraints gbc = new GridBagConstraints();

// Make the component on stretchable
gbc.fill = GridBagConstraints.NONE;

gbl.setConstraints(component, gbc);
frame.add(component);
frame.pack();
frame.setVisible(true);
}
}</source>



== Setting the Location of a Component in a GridBagLayout ==



<source lang="java">
import java.awt.Container;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
public class Main {
public static void main(String[] argv) throws Exception {
JFrame frame = new JFrame();
Container container = frame.getContentPane();
GridBagLayout gbl = new GridBagLayout();
container.setLayout(gbl);
GridBagConstraints gbc = new GridBagConstraints();
JButton component1 = new JButton("a");
JButton component2 = new JButton("b");
gbc.gridx = 1;
gbc.gridy = 1;
gbl.setConstraints(component1, gbc);
container.add(component1);
gbc.gridx = 0;
gbc.gridy = 0;
gbl.setConstraints(component2, gbc);
container.add(component2);
container.add(component1);
container.add(component2);
frame.pack();
frame.setVisible(true);
}
}</source>



== Setting the Space around a Component Within the Cell of the GridBagLayout Using Insets ==



<source lang="java">
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import javax.swing.JButton;
import javax.swing.JFrame;
public class Main {
public static void main(String[] argv) throws Exception {
JFrame frame = new JFrame();
GridBagLayout gbl = new GridBagLayout();
frame.setLayout(gbl);
JButton component = new JButton("1");
frame.add(new JButton("2"));
frame.add(new JButton("3"));
frame.add(new JButton("4"));
frame.add(new JButton("5"));
frame.add(component);
frame.add(new JButton("6"));
frame.add(new JButton("7"));
frame.add(new JButton("8"));
frame.add(new JButton("9"));
frame.add(new JButton("0"));

gbl.layoutContainer(frame);
GridBagConstraints gbc = new GridBagConstraints();
int top = 20;
int left = 20;
int bottom = 2;
int right = 40;
gbc.insets = new Insets(top, left, bottom, right);
gbl.setConstraints(component, gbc);

frame.pack();
frame.setVisible(true);
}
}</source>



== Setting the Stretchyness of Rows and Columns in a GridBagLayout Using Layout Weights ==



<source lang="java">
import java.awt.GridBagLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
public class Main {
public static void main(String[] argv) throws Exception {
JFrame frame = new JFrame();
GridBagLayout gbl = new GridBagLayout();
frame.setLayout(gbl);
frame.add(new JButton("1"));
frame.add(new JButton("2"));
gbl.layoutContainer(frame);

gbl.columnWeights = new double[]{0.0f, 1.0f, 2.0f};
gbl.rowWeights = new double[]{0.0f, 1.0f};
frame.pack();
frame.setVisible(true);
}
}</source>



== Uses many features ==

<p>- weights, insets, internal padding, horizontal fill, exact cell positioning, multi-column cells, and anchoring (component positioning within a cell)</p>



<source lang="java">
/*
*
* Copyright (c) 1998 Sun Microsystems, Inc. All Rights Reserved.
*
* Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
* modify and redistribute this software in source and binary code form,
* provided that i) this copyright notice and license appear on all copies of
* the software; and ii) Licensee does not utilize the software in a manner
* which is disparaging to Sun.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* This software is not designed or intended for use in on-line control of
* aircraft, air traffic, aircraft navigation or aircraft communications; or in
* the design, construction, operation or maintenance of any nuclear
* facility. Licensee represents and warrants that it will not use or
* redistribute the Software for such purposes.
*/

/*
* GridBagLayoutDemo.java requires no other files.
*/
import java.awt.ruponentOrientation;
import java.awt.Container;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import javax.swing.JButton;
import javax.swing.JFrame;
public class GridBagLayoutDemo {
final static boolean shouldFill = true;
final static boolean shouldWeightX = true;
final static boolean RIGHT_TO_LEFT = false;
public static void addComponentsToPane(Container pane) {
if (RIGHT_TO_LEFT) {
pane.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);
}
JButton button;
pane.setLayout(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
if (shouldFill) {
// natural height, maximum width
c.fill = GridBagConstraints.HORIZONTAL;
}
button = new JButton("Button 1");
if (shouldWeightX) {
c.weightx = 0.5;
}
c.gridx = 0;
c.gridy = 0;
pane.add(button, c);
button = new JButton("Button 2");
c.gridx = 1;
c.gridy = 0;
pane.add(button, c);
button = new JButton("Button 3");
c.gridx = 2;
c.gridy = 0;
pane.add(button, c);
button = new JButton("Long-Named Button 4");
c.ipady = 40; // make this component tall
c.weightx = 0.0;
c.gridwidth = 3;
c.gridx = 0;
c.gridy = 1;
pane.add(button, c);
button = new JButton("5");
c.ipady = 0; // reset to default
c.weighty = 1.0; // request any extra vertical space
c.anchor = GridBagConstraints.PAGE_END; // bottom of space
c.insets = new Insets(10, 0, 0, 0); // top padding
c.gridx = 1; // aligned with button 2
c.gridwidth = 2; // 2 columns wide
c.gridy = 2; // third row
pane.add(button, c);
}
/**
* Create the GUI and show it. For thread safety, this method should be
* invoked from the event-dispatching thread.
*/
private static void createAndShowGUI() {
// Create and set up the window.
JFrame frame = new JFrame("GridBagLayoutDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Set up the content pane.
addComponentsToPane(frame.getContentPane());
// Display the window.
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
// Schedule a job for the event-dispatching thread:
// creating and showing this application"s GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}</source>



== Using a GridBagLayout Manager ==

<OL><LI>GridBagLayout is the most complex and most flexible of the layout managers.</LI><LI>Elements are arranged in a rectangular grid.</LI><LI>Elements can have different sizes and can occupy multiple rows or columns.</LI><LI>The position and behavior of each element is specified by an instance of the GridBagConstraints class.</LI></OL>



<source lang="java">
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.border.Border;
public class TryGridBagLayout {
static JFrame aWindow = new JFrame("This is a Gridbag Layout");
public static void main(String[] args) {
aWindow.setBounds(30, 30, 300, 300);
aWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
GridBagLayout gridbag = new GridBagLayout();
GridBagConstraints constraints = new GridBagConstraints();
aWindow.getContentPane().setLayout(gridbag);
constraints.weightx = constraints.weighty = 10.0;
constraints.fill = constraints.BOTH;
addButton(" Press ", constraints, gridbag);
constraints.gridwidth = constraints.REMAINDER;
addButton("GO", constraints, gridbag);
aWindow.setVisible(true);
}
static void addButton(String label, GridBagConstraints constraints, GridBagLayout layout) {
Border edge = BorderFactory.createRaisedBevelBorder();
JButton button = new JButton(label);
button.setBorder(edge);
layout.setConstraints(button, constraints);
aWindow.getContentPane().add(button);
}
}</source>

Java Tutorial/Swing/GridBagLayout - История изменений

в 17:44, 31 мая 2010

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