How to make a modal JFrame?

Question

Possible Duplicate:
How to make a JFrame Modal in Swing java

I have 2 JFrames one is the main JFrame and the other one is a sub JFrame, and I'm trying to make the main JFrame inaccessible to user interactions when I display the sub JFrame.

Solution 1

How to make a modal JFrame?

Don't. Use a modal JDialog -- that's precisely what they're for. You understand of course that a JDialog can hold a complex GUI, as complex as any held by a JFrame.

We often run into posts like these by folks who use a GUI-builder such as NetBeans to help them create their GUI's, and since the second window's code was created by the builder to extend a JFrame, it's very hard for the programmer to go back and change it to a dialog. The way to fix this is to try to gear your Swing code creation towards creation of JPanels, not top-level windows such as JFrames. This way you could use the created JPanel in a JFrame if desired, a JDialog if desired, a JApplet, or even another JPanel, whatever works best for the situation. This will increase your code's flexibility tremendously.

Solution 2

use JDialog and send the third parameter to its constructor as true (modal)

Comments

[user1016195]

I am using jframe only. Can you give the code?

[Hovercraft Full Of Eels]

There is no "code" to give as it all depends on how you're trying to do things here. First and foremost -- read the Swing tutorials to see how to code with Swing. Next, show us your code. I would be more than happy to help you work with your code.

[user1016195]

EmployeeForm sub=new EmployeeForm(); sub.setAlwaysOnTop(true); sub.setVisible(true); this.setEnabled(false);

[user1016195]

this code help me to make sub frame as modal. But now my problem is how will i set the mainJFrame as the active form after closing the subJFrame?

[Hovercraft Full Of Eels]

Again -- don't use a JFrame -- use a JDialog. What about this advice confuses you?

[user1016195]

How to add a 'cancel' button in jdialog?

[MOHAMED FATHEI]

any JButton and in its click event write "this.dispose();"

[ugo]

My little contribute: frame.addFocusListener(new FocusAdapter() { public void focusLost(FocusEvent e) { frame.requestFocus(); } });