Re: Preventing A New Window From Grabbing Focus
Mark Space wrote:
Hal Vaughan wrote:
I tried it different ways. There is a cancel button on it and the user
may
need to cancel the operation. If the window can't get focus, the user
can't click the cancel button.
Huh, well in my test it didn't. I'm on Windows though, so maybe other
OSs work differently. Can you try it on Windows? I'm curious now if
it's the code you have or a difference in OS.
This quick and dirty, but it does it. Quick and dirty in the generated
by a GUI tool and I didn't clean it up. Three files, three classes,
snip on the <<<<<'s.
I had time to download Java6 and try this earlier than I expected. It does
work fine on Linux. I added in a Thread.sleep() statement so I could click
the button, then start typing so I could watch and see if I lost any
characters when the window opened or if I were hitting the space key over
and over, if it would trigger the "Cancel" button and it didn't.
So I'd say this works on Linux. I could swear I used the same method to
make a window non-focusable, but when I did, it was not possible to press
the "Cancel" button. I've trashed my code that wasn't working and, like I
said, gone with a different idea. However, I'll be looking over your code
to see if you did anything differently than I did.
It could also be a bug or glitch that was fixed between Java5 and Java6.
Thanks for the help on this and I'm glad I finally got time to compile and
test this for you.
Hal
package windowtest;
public class Main {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
MainFrame.main( args );
}
}
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
package windowtest;
public class MainFrame extends javax.swing.JFrame {
/** Creates new form MainFrame */
public MainFrame() {
initComponents();
setSize( 200, 200 );
setLocationRelativeTo( null );
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jButton1 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jButton1.setText("Make New Nonfocusable Frame");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new
javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(90, 90, 90)
.addComponent(jButton1)
.addContainerGap(97, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(134, 134, 134)
.addComponent(jButton1)
.addContainerGap(141, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt)
{
// TODO add your handling code here:
new NFW().setVisible(true);
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new MainFrame().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
// End of variables declaration
}
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
package windowtest;
public class NFW extends javax.swing.JFrame {
/** Creates new form NFW */
public NFW() {
initComponents();
setSize( 200 , 200 );
setLocationRelativeTo( null );
setFocusableWindowState(false);
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jButton1 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jButton1.setText("Cancel");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new
javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(151, 151, 151)
.addComponent(jButton1)
.addContainerGap(178, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING,
layout.createSequentialGroup()
.addContainerGap(145, Short.MAX_VALUE)
.addComponent(jButton1)
.addGap(130, 130, 130))
);
pack();
}// </editor-fold>
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt)
{
// TODO add your handling code here:
this.dispose();
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new NFW().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
// End of variables declaration
}