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Cancel Button of a WizardPage [message #463631]

Fri, 11 November 2005 07:02

Matt

Messages: 19
Registered: July 2009

Junior Member

I have a wizard page where you can open another simple dialog. Within this
dialog i have two button. One is a OK button and the other is a CANCEL
button. The cancel button should not only close the simple dialog but also
the wizard. It this possible and if yes how can i do this?

Thanks a lot for your help,
Matt

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Re: Cancel Button of a WizardPage [message #463641 is a reply to message #463631]

Fri, 11 November 2005 12:05

venkataramana m

Messages: 86
Registered: July 2009

Member

In some method of the page you might be opening the dialog as follows ... add some more code to it to close.

YourDlg dlg = new YourDlg();
if( dlg.open() == Window.CANCEL )
{
((WizardDialog)getContainer()).close();
return;
}

Thanks
Venkat

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Re: Cancel Button of a WizardPage [message #463642 is a reply to message #463641]

Fri, 11 November 2005 13:00

Matt

Messages: 19
Registered: July 2009

Junior Member

Thanks, it works so far.
But i get the following error: Unhandled event loop exception - Reason:
Widget is disposed.
This happens in the WizardDialog class in function 'updateForPage'.
Nullpointer happens on the following line: oldPage.setVisible(false);
(line 939)
Any idea on how to avoid this?

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Re: Cancel Button of a WizardPage [message #463646 is a reply to message #463642]

Fri, 11 November 2005 13:52

Stefan Langer

Messages: 236
Registered: July 2009

Senior Member

Check for disposal of the widget. If it is dispose simply don't do
whatever you want to do. Something along the lines

if(!widget.isDisposed)
{
// do your stuff here
}

HTH
Stefan

Matt wrote:
> Thanks, it works so far.
> But i get the following error: Unhandled event loop exception - Reason:
> Widget is disposed.
> This happens in the WizardDialog class in function 'updateForPage'.
> Nullpointer happens on the following line: oldPage.setVisible(false);
> (line 939)
> Any idea on how to avoid this?
>

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Re: Cancel Button of a WizardPage [message #463648 is a reply to message #463646]

Fri, 11 November 2005 14:01

Matt

Messages: 19
Registered: July 2009

Junior Member

Unfortunately 'oldPage.setVisible(false);' happens in the WizardDialog
class where i can't change anything.
Maybe I'll have to look for a completely different solution.

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Re: Cancel Button of a WizardPage [message #463652 is a reply to message #463648]

Fri, 11 November 2005 14:13

Stefan Langer

Messages: 236
Registered: July 2009

Senior Member

I guess you are calling the dispose method on the wizard before it has
completed its task.

Check if the close() call calls dispose and if it does try to set the
wizard invisible instead and after it has doen what ever it needs to
close it.

Stefan

Matt wrote:
> Unfortunately 'oldPage.setVisible(false);' happens in the WizardDialog
> class where i can't change anything.
> Maybe I'll have to look for a completely different solution.
>

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Re: Cancel Button of a WizardPage [message #463654 is a reply to message #463652]

Fri, 11 November 2005 14:20

Matt

Messages: 19
Registered: July 2009

Junior Member

Yes, the close() call calls the dispose method from the WizardDialog class
(Method hardClose()). My wizard doesn't need to do anything after closing.
So setting the wizard invisible doesn't solve my problem.

Matt

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Re: Cancel Button of a WizardPage [message #463656 is a reply to message #463654]

Fri, 11 November 2005 14:23

Stefan Langer

Messages: 236
Registered: July 2009

Senior Member

Can you post some code snippet showing the problem?
Stefan

Matt wrote:
> Yes, the close() call calls the dispose method from the WizardDialog
> class (Method hardClose()). My wizard doesn't need to do anything after
> closing. So setting the wizard invisible doesn't solve my problem.
>
> Matt
>

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