grid bag layout doesnt work?

Well personally I never use GridBayLayout because its too complex for me. But you have a better chance of someone helping if you actually post demo code.

If you need further help then you need to create a [url http://homepage1.nifty.com/algafield/sscce.html]Short, Self Contained, Compilable and Executable, Example Program[/url] (SSCCE) that demonstrates the incorrect behaviour, because I can't guess exactly what you are doing based on the information provided.

And don't forget to use the [url http://forum.java.sun.com/help.jspa?sec=formatting]Code Formatting Tags[/url] so the code retains its original formatting.

camickra at 2007-7-8 8:55:20 >

hi

CONTAINER.setLayout(gridbag);

constraints.fill = GridBagConstraints.BOTH;

addComponent(panel, component, 1, 1, 1, 1, 1, 1);

what is CONTAINER, component?

my code is:

GridBagConstraints c = new GridBagConstraints();

public Mess()

{

// set the structure of the Jframe

this.setTitle("Room");

this.setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);

//create a jpannel for the main buttons and log in text fields

jPanel = new JPanel(new GridBagLayout());

jPanel.setVisible(true);

this.getContentPane().add(jPanel, BorderLayout.NORTH);

lblUserName = new JLabel("User Name: ");

lblUserName.setVisible(true);

c.weightx = 0.5;

c.gridx = 0;

c.gridy = 0;

jPanel.add(lblUserName, c);

txtUserName = new JTextField("", 10);

txtUserName.setVisible(true);

c.weightx = 0.5;

c.gridx = 1;

c.gridy = 0;

jPanel.add(txtUserName, c);

lblPassword = new JLabel("Password: ");

lblPassword.setVisible(true);

c.weightx = 0.5;

c.gridx = 2;

c.gridy = 0;

jPanel.add(lblPassword, c);

txtPassword = new JTextField("", 10);

txtPassword.setVisible(true);

c.weightx = 0.5;

c.gridx = 3;

c.gridy = 0;

jPanel.add(txtPassword, c);

btnLogOn = new JButton(logOnAction);

c.weightx = 0.5;

c.gridx = 4;

c.gridy = 0;

c.fill = GridBagConstraints.NONE;

jPanel.add(btnLogOn, c);

btnLogOff = new JButton(logOffAction);

c.weightx = 0.5;

c.gridx = 5;

c.gridy = 0;

jPanel.add(btnLogOff, c);

btnWhis = new JButton("Whis");

c.weightx = 0.5;

c.gridx = 6;

c.gridy = 0;

jPanel.add(btnWhis, c);

btnWhisaddActionListener(this);

btnWhis.setEnabled(false);

jPanelUsers = new JPanel(new GridBagLayout());

jPanelUsers.setVisible(true);

this.getContentPane().add(jPanelUsers, BorderLayout.EAST);

lblUserList = new JLabel("Logged On Users:");

lblUserList.setVisible(true);

c.weightx = 0.5;

c.gridx = 6;

c.gridy = 1;

jPanelUsers.add(lblUserList, c);

modelList = new DefaultListModel();

dataList = new JList(modelList);

dataList.setBackground(Color.WHITE);

c.weightx = 0.5;

c.gridx = 8;

c.gridy = 1;

c.fill = GridBagConstraints.BOTH;

jPanelUsers.add(dataList, c);

jPanelMess = new JPanel(new GridBagLayout());

jPanelMess.setVisible(true);

this.getContentPane().add(jPanelMess, BorderLayout.SOUTH);

lblMess = new JLabel("Mess: ");

lblMess.setVisible(true);

c.weightx = 0.5;

c.gridx = 1;

c.gridy = 3;

jPanelMess.add(lblMess, c);

txtMess = new JTextField("", 50);

txtMess.setVisible(true);

txtMess.setEditable(false);

c.weightx = 0.5;

c.gridx = 2;

c.gridy = 3;

c.fill = GridBagConstraints.HORIZONTAL;

jPanelMess.add(txtMess, c);

btnSend = new JButton("Send");

btnSend.setEnabled(false);

btnSend.addActionListener(this);

c.weightx = 0.5;

c.gridx = 3;

c.gridy = 3;

c.fill = GridBagConstraints.NONE;

jPanelMess.add(btnSend, c);

jtxtC = new JTextArea(10,5);

JScrollPane sp = new JScrollPane(jtxtC);

this.add(sp);

// set the style and format of the Jframe

this.setBackground(Color.white);

this.pack();

this.setSize(700, 500);

this.setVisible(true);

h1400046a at 2007-7-8 8:55:20 >

container = JPanel

component = whatever components youre adding

it wasnt usable code but an example of how to actually utilize

some object oriented design to make GBL easier.

your code is insane.

when you have pages of blocks of code that are all identical you

know you have a problem.

you also dont have to set setVisible on components, by the way.

also if all of your weights are .5 then they are all actually 1.

.5 means half of the size of whatever component is 1.

its like a percentage.

TuringPesta at 2007-7-8 8:55:20 >

import javax.swing.*;

import javax.swing.event.*;

import java.awt.*;

import java.awt.event.*;

public class GBLDemo{

public static void main(String[] args) {

new GBLDemo();

}

public GBLDemo(){

makeLayout();

}

public void makeLayout(){

frame = new JFrame("GBL Demo");

panel = new JPanel();

button = new JButton("BUTTON");

slider = new JSlider();

checkbox = new JCheckBox("CHECKBOX");

textfield = new JTextField("TEXTFIELD");

setLayout(panel);

setFill(GridBagConstraints.BOTH);

setInsets(5, 5, 5, 5);

setComponent(button, 10, 10, 1, 1, 1, 1);

setComponent(slider, 20, 10, 1, 1, 1, 1);

setComponent(checkbox, 10, 20, 1, 1, .7, .5);

setComponent(textfield, 20, 20, 1, 1, .3, .5);

frame.setContentPane(panel);

frame.setSize(300, 300);

frame.setLocationRelativeTo(null);

frame.setVisible(true);

}

// PUT THE FOLLOWING BLOCK INTO A STATIC UTILITY CLASS

public void setLayout(JComponent container){

gridbag = new GridBagLayout();

constraints = new GridBagConstraints();

this.container = container;

this.container.setLayout(gridbag);

}

public void buildConstraints(int gx, int gy, int gw, int gh, double wx, double wy){

constraints.gridx = gx;

constraints.gridy = gy;

constraints.gridwidth = gw;

constraints.gridheight = gh;

constraints.weightx = wx;

constraints.weighty = wy;

}

public void setInsets(int top, int bottom, int left, int right){

constraints.insets.top = top;

constraints.insets.bottom = bottom;

constraints.insets.left = left;

constraints.insets.right = right;

}

public void setFill(int fill){

constraints.fill = fill;

}

public void setComponent(JComponent component, int gx, int gy, int gw, int gh, double wx, double wy){

buildConstraints(gx, gy, gw, gh, wx, wy);

gridbag.setConstraints(component, constraints);

container.add(component);

}

// END BLOCK

JFrame frame;

JPanel panel;

JButton button;

JSlider slider;

JCheckBox checkbox;

JTextField textfield;

// UTILITY CLASS VARIABLES

static JComponent container;

static GridBagLayout gridbag;

static GridBagConstraints constraints;

// END BLOCK

}

TuringPesta at 2007-7-8 8:55:20 >