Canceling windowDeactivated event

I'm writing a plug-in for ImageJ and operate on two images that are in seperate windows.
The plug-in places pairs of markers on an image. I have implemented the WindowListener interface to capture the windowDeactivated event which checks if a marker pair is complete and if it's not asks the user if the placement should be cancelled.
The event handler gets called as it should and I can display the dialog box and all but when a user wants to resume placing markers and not switch to the other window the event should be cancelled and focus reset on the original window.
Resetting focus to the original window isn't that much of a problem but I can't cancel the event. After resetting focus the focus is then reset to the other window which I obviously don't want.
I'm a little out of idea's since the consume method isn't available and I really don't know how to do this otherwise.

Hi,
I think your problem is the following: The event is only sort of a notification-event - this means it is not a signal that something will happen but a notification that something has happend (in your case the window lost the state of being the active window). So there is no need (it makes no sense) to cnacel or consume this event - this event is no reason for further system-actions like a key-event or a mouse-event.
Your problem with re-gaining the focus has - in my opinion - the following reason: The system is at the moment when you get this event in the state that your window lost the focus (or the active-state) but the window which should gain the focus (from the point of view of the system) still hasn't got the focus. So after the actions of your listener are performed one of the systemactions will be to give the focus to the other window.
That's the reason why setting the focus direct in your listener can't work. Normally it would help if you use the invokeLater-technique. This will guarantee that your work is done after(!) all the work the system has to do in this moment.
HTH and greetings from
Holger

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Please Mark As Answer if my post solves your problem or Vote As Helpful if a post has been helpful for you. This post is provided "AS IS" with no warrenties and confers no rights.

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Amalaraja Fernando,
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Please Mark As Answer if my post solves your problem or Vote As Helpful if a post has been helpful for you. This post is provided "AS IS" with no warrenties and confers no rights.

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Jdeveloper version 11.X.6.
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import java.util.Collection;
import java.util.Collections;
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"when i try the frmData.disposed event"
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Consider the following snippet.
Private Sub SomeEvent(Byval sender as Object) Handles SomeControl.SomeEvent
--Do Something_1
--Do Something_2
--Do Something_3
call A()
--Do Something_4
--Do Something_5
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In the above exception, if the exception occurs at the said location in Procedure_B then,
1. Remaining Statements in Procedure_B should not execute.
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3. Remaining Statements in SomeEvent should not execute.
Please not that:
I know this can be handled by using Try..Catch in every Subroutine and Raise an exception from there. But it cannot be implemented due to some reason.
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I think that you only need Try-Catch in
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It is also possible to distinguish specific exceptions.
It is not clear why you cannot use Try-Catch. Then use
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Error1:

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arooaroo wrote: Shame, because I thought you were on to something.
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message
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Icon
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others
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