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Sameer · Guest

The dialog boxes created using JOptionPane like showConfirmDialog,
showInputDialog gets displayed in the centre of the screen. I need to change
its position. How to do this?
These methods return int or none.
How to get access to the dialog boxes so that they
can be positioned by using appropriate method? or I need to create a custom
dialog box so that they can be positioned?

Roedy Green · Guest

On Sun, 18 Sep 2005 21:35:24 +0530, "Sameer"
<spamtoobad-sameer (AT) yahoo (DOT) com> wrote or quoted :

Sameer · Guest

Consider some methods of JOptionPane:
1) static int showConfirmDialog(Component parentComponent, Object
message, String title, int optionType, int messageType, Icon icon)

2) static String showInputDialog(Component parentComponent, Object
message)

These are the methods which return int and String respectively.
If static methods doing the work to show dialog box, then how do i get
instance of JOptionPane to operate on i.e. to apply the method
setLocation etc.-

Please explain with the help of a code-snippet.

Roedy Green · Guest

On 18 Sep 2005 12:46:31 -0700, "Sameer" <spamtoobad-sameer (AT) yahoo (DOT) com>
wrote or quoted :

Thomas Fritsch · Guest

"Sameer" <spamtoobad-sameer (AT) yahoo (DOT) com> wrote:

Sameer · Guest

The dialog box generated is a part of error-handling code and must be
executed to validate command line parameters.
Upto validation point there is no necessary to display GUI, so there is
no parent component to any of the dialog boxes so I have to pass null
as the parameter.

Thomas Fritsch · Guest

Sameer schrieb:

Roedy Green · Guest

On 19 Sep 2005 02:34:24 -0700, "Sameer" <spamtoobad-sameer (AT) yahoo (DOT) com>
wrote or quoted :

E11 · Guest

Roedy,

The setLocation in JOptionPane (or rather, Component, but inherited by
JOptionPane) is non-static. i.e. If you have an object instance of
JOptionPane, then you can call object.setLocation(...).

When you use the convenience static methods
JOptionPane.showConfirmDialog(...), they do not return you the handle
to the dialog box that is shown. Rather it only returns you the value
representing the user-input.

Sameer, if you have no other frame or dialog to centre the dialog box
against, i would suggest that you create a custom dialog class that
extends the JDialog. You can even make use of parameters and static
convenience methods to make it configurable, and work just like
JOptionPane.showConfirmDialog(...).

Regards,
Edwin

Sameer · Guest

Thanks!
At last the class which helped me to locate the dialog box
appropriately is:

import java.awt.Dimension;
import java.awt.Toolkit;
import javax.swing.JDialog;
import javax.swing.JOptionPane;

public class ErrorDialog {
String message;
String title;
int splashImageHeight;
int distanceFromSplashWindow;

public ErrorDialog(String title, String message, int splashHeight, int
distanceBetween) {
super();
distanceFromSplashWindow = distanceBetween;
this.message = message;
splashImageHeight = splashHeight;
this.title = title;

JOptionPane jop = new JOptionPane(message);
JDialog jdg = jop.createDialog(null, title);
Toolkit tk = Toolkit.getDefaultToolkit();
Dimension screenDim = tk.getScreenSize();
int errW = screenDim.width / 2 - jdg.getWidth() / 2;
int errH = screenDim.height / 2 + splashImageHeight / 2+
distanceFromSplashWindow;
jdg.setLocation(errW, errH);
jdg.setVisible(true);
}

}

May be helpful to anybody.
Thanks again for posting for this thread.