My JFrame opens in a minimized Mode but it can be maximized.
I want to disable the maximize icon so that user cannot maximize the frame and can see it only in the minimized or default mode.
Is it possible?
Use frame.setResizable(false). It disables the maximize button but let the the 'close' and 'minimize' buttons active.
Use this in your code, try using JDialog instead of JFrame for main window.
frame.setResizeable(false);
there is no direct way to remove the maximize button off the
Resizable JFrame as it is created by Windows and it is not painted
using Swing so U can’t touch this.
so you can replace JFrame with JDialog or remove the title bar and implement customized title bar.
You can disable it by using frame.setResizeable(false); or you can remove it completely by using following code
public class Test extends JDialog {
public Test(JFrame frame, String str) {
super(frame, str);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent evt) {
System.exit(0);
}
});
}
public static void main(String[] args) {
try {
Test myFrame = new Test(new JFrame(), "Removing maximize button");
JPanel panel = new JPanel();
panel.setSize(100, 100);
myFrame.add(panel);
myFrame.setSize(100, 100);
myFrame.setVisible(true);
} catch (IllegalArgumentException e) {
System.exit(0);
}
} }
Related
I would like to apply my own close and minimize buttons. Is there any way to change the JFrame design?
The trick lies in the PLAF and setDefaultLookAndFeelDecorated(true) (Specifying Window Decorations).
E.G.
import java.awt.BorderLayout;
import javax.swing.*;
public class FrameCloseButtonsByLookAndFeel {
FrameCloseButtonsByLookAndFeel() {
String[] names = {
UIManager.getSystemLookAndFeelClassName(),
UIManager.getCrossPlatformLookAndFeelClassName()
};
for (String name : names) {
try {
UIManager.setLookAndFeel(name);
} catch (Exception e) {
e.printStackTrace();
}
// very important to get the window decorations.
JFrame.setDefaultLookAndFeelDecorated(true);
JFrame f = new JFrame(UIManager.getLookAndFeel().getName());
f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
JPanel gui = new JPanel(new BorderLayout());
f.setContentPane(gui);
JTree tree = new JTree();
tree.setVisibleRowCount(4);
gui.add(tree, BorderLayout.LINE_START);
gui.add(new JScrollPane(new JTextArea(3,15)));
JToolBar toolbar = new JToolBar();
gui.add(toolbar, BorderLayout.PAGE_START);
for (int ii=1; ii<5; ii++) {
toolbar.add(new JButton("Button " + ii));
if (ii%2==0) {
toolbar.addSeparator();
}
}
f.pack();
f.setLocationByPlatform(true);
f.setVisible(true);
}
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
new FrameCloseButtonsByLookAndFeel();
}
});
}
}
think you are after a JWindow
http://docs.oracle.com/javase/7/docs/api/javax/swing/JWindow.html
You can then create your own buttons which actions can minimize/close your window
The only thing I'm aware that can be done is to add a WindowListener to the JFrame and handle closing events in that listener. You can make virtually anything, like displaying dialogs or even cancelling the closing of the JFrame.
See this tutorial for more details about how to write such listeners.
As for minimizing: as far as I know, there is no way to control or modify such behaviour, it's completely controlled by the operating system.
The only way to change the aspect of the minimize/close/maximize buttons is to use a custom LookAndFeel and setting JFrame.setDefaultLookAndFeelDecorated (true);.
Set jframe undecorated.
Place a jlabel for each button.
Put own icon for each Btn.
Put mouseListeners for each jlabel and
specify code eg, System.exit(0);/set ICONIFIED option
public class Scratch {
public static void main(String[] args) {
Dimension d = new Dimension(300,300);
JFrame frame1 = new JFrame("Frame-1");
JFrame frame2 = new JFrame("Frame-2");
frame1.setSize(250,250);
frame2.setSize(d);
frame1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame2.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame1.setVisible(true);
frame2.setVisible(true);
}
}
When I run this, the two frames show up as expected, but when I close one of them, both of them close. I want to achieve the functionality where only the frame I click 'x' on closes and the other remains open until I click the 'x' on it. How do I do it?
frame1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame2.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
The "EXIT" tells the JVM to stop so all the windows are closed:
So you could be using:
frame1.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame2.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
Then only the frame you click on will close. When both frames are closed the JVM will exit.
However, that is not a good solution. An application should generally only have a single JFrame and then use a JDialog for a child window. Using this approach the code would be:
JDialog dialog = new JDialog(frame1);
dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
Depending on you requirement you would make the dialog modal or non-modal.
Using this approach the JVM will exit when you close the frame however it will stay open when you close a child dialog.
Read this forum question about multiple JFrames: The Use of Multiple JFrames: Good or Bad Practice?. It will give more thoughts on why using 2 JFrames is not a good idea.
public class Scratch {
public static void main(String[] args) {
Dimension d = new Dimension(300,300);
JFrame frame1 = new JFrame("Frame-1");
JFrame frame2 = new JFrame("Frame-2");
frame1.setSize(250,250);
frame2.setSize(d);
frame1.setVisible(true);
frame2.setVisible(true);
}
}
you add one of them to your frame.
setVisible(false);
dispose();
setDefaultCloseOperation(DISPOSE_ON_CLOSE);
I am developing a tool for my laptop. I want to disable minimize button in the JFrame. I have already disabled maximize and close button.
Here is the code to disable maximize and close button:
JFrame frame = new JFrame();
frame.setResizable(false); //Disable the Resize Button
// Disable the Close button
frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
Please, tell me how to disable minimize button.
Generally, you can't, what you can do is use a JDialog instead of JFrame
As #MadProgrammer said (+1 to him), this is definitely not a good idea you'd rather want to
use a JDialog and call setDefaultCloseOperation(JDialog.DO_NOTHING_ON_CLOSE); to make sure it cannot be closed.
You could also use a JWindow (+1 to #M. M.) or call setUndecorated(true); on your JFrame instance.
Alternatively you may want to add your own WindowAdapater to make the JFrame un-minimizable etc by overriding windowIconified(..) and calling setState(JFrame.NORMAL); from within the method:
//necessary imports
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
public class Test {
/**
* Default constructor for Test.class
*/
public Test() {
initComponents();
}
public static void main(String[] args) {
/**
* Create GUI and components on Event-Dispatch-Thread
*/
javax.swing.SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
Test test = new Test();
}
});
}
private final JFrame frame = new JFrame();
/**
* Initialize GUI and components (including ActionListeners etc)
*/
private void initComponents() {
frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
frame.setResizable(false);
frame.addWindowListener(getWindowAdapter());
//pack frame (size JFrame to match preferred sizes of added components and set visible
frame.pack();
frame.setVisible(true);
}
private WindowAdapter getWindowAdapter() {
return new WindowAdapter() {
#Override
public void windowClosing(WindowEvent we) {//overrode to show message
super.windowClosing(we);
JOptionPane.showMessageDialog(frame, "Cant Exit");
}
#Override
public void windowIconified(WindowEvent we) {
frame.setState(JFrame.NORMAL);
JOptionPane.showMessageDialog(frame, "Cant Minimize");
}
};
}
}
If you don't want to allow any user action use JWindow.
You may try to change your JFrame type to UTILITY. Then you will not see both minimize btn and maximize btn in your program.
I would recommend you to use jframe.setUndecorated(true) as you are not using any of the window events and do not want the application to be resized. Use the MotionPanel that I've made, if you would like to move the panel.
My app has a JWindow that needs to be minimized when the custom minimizer button clicked.
Please reply if anyone knows how to minimize a JWindow. I have searched a lot but couldn't find any suitable method to minimize.
I know how to minimize a JFrame. So please don't bother answering regarding JFrame.
Thanks.
I know you don't want to hear this, but the terrible truth is that there is no big difference between undecorated jframes (with setstate methods) and jwindows... :)
JFrame f = new JFrame("Frame");
f.setUndecorated(true);
Due to the fact that a JWindow is not decorated with any control icons, no setState method is provided. One workaround is to allow your custom minimizer button to set the window visible as required:
public class JWindowTest extends JFrame {
JWindow window = new JWindow();
JButton maxMinButton = new JButton("Minimize Window");
public JWindowTest() {
setSize(300, 200);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
maxMinButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (window.isVisible()) {
maxMinButton.setText("Restore Window");
} else {
maxMinButton.setText("Minimize Window");
}
window.setVisible(!window.isVisible());
}
});
add(maxMinButton);
window.setBounds(30, 30, 300, 220);
window.setLocationRelativeTo(this);
window.add(new JLabel("Test JWindow", JLabel.CENTER));
window.setVisible(true);
}
public static void main(String[] args) {
new JWindowTest().setVisible(true);
}
}
I created a window and want to intercept the exit with the method windowStateChanged to save the data before the application closes. However, it doesn't appear to be saving the data before it closes. How can I correct this?
see code below:
public class InventoryMainFrame extends JFrame implements WindowStateListener{
//set up the main window - instantiate the application
private InventoryInterface inventoryInterface; //panel that contains menu choices and buttons
public InventoryMainFrame(){ //main window
setTitle("Inventory System");
setSize (500,500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLayout(new BorderLayout());
//setLocationRelativeTo(null); //center window on the screen
inventoryInterface = new InventoryInterface(); //set up the panel that contains menu choices and buttons
add(inventoryInterface.getMainPane()); //add that panel to this window
pack();
setVisible(true);
//display window on the screen
}
public static void main(String[] args) {
//sets up front end of inventory system , instantiate the application
InventoryMainFrame aMainWindow = new InventoryMainFrame( );
}
#Override
public void windowStateChanged(WindowEvent w) {
//intercept the window close event so that data can be saved to disk at this point
if (w.getNewState()==WindowEvent.WINDOW_CLOSED){
//save the index file
try{
inventoryInterface.getInventory().saveIndexToFile();
System.out.println("saving");
dispose(); //dispose the frame
}
catch(IOException io){
JOptionPane.showMessageDialog(null,io.getMessage());
}
}
}
}
You should try registering a WindowAdapter and override its windowClosing method. For more information, see How to Write Window Listeners.