| how to control the different view by input? [message #458748] |
Wed, 20 July 2005 11:49  |
Eclipse User |
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Originally posted by: kahon.sohu.com
hi,
I write a class,which has a Shell represents my main UI.It is like below:
---------------------Shell--------------------------|
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---MenuBar-------- |
---Toolbar-------- |
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|--------SashForm(main)-------------------------| |
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Tree |SashFormright| |
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|------------------------------------------------
then I want to change the sashForm(main)'s Tree by my input of one's
menubar's
input(a menuitem's click will brings front a Dialog which accept some
user's input),and render the different Tree in the SashForm(main).I have
write the dialog and receive user's input,like this: dialog.open()(returns
String[] represent user's input),then I use the result to render different
Tree,but it does raise a "widgt is disposed" Exception.
All above suggest the shell should like a Access Control List's access,and
I'm guesting the wrong is I don't understand the event listner
machalism,then who can give me a right method to design the Framework? Or
give me any suggestions.
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| Re: how to control the different view by input? [message #458894 is a reply to message #458748] |
Mon, 25 July 2005 14:41  |
| Eclipse User |
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Once a widget is disposed then it cannot be used again (trying to do so will
cause a Widget is Disposed exception). It is not clear from your
description which disposed widget you are accessing, but my guess is that is
may be in the dialog that is shown and then destroyed when the user enters
some information. Your error stack trace should be helpful in indicating
the disposed widget that is being accessed.
Grant
"kahon" <kahon@sohu.com> wrote in message
news:662ce262720d72e7df861ab0ec92950e$1@www.eclipse.org...
> hi,
> I write a class,which has a Shell represents my main UI.It is like below:
> ---------------------Shell--------------------------|
> |
> ---MenuBar-------- |
> ---Toolbar-------- |
> |
> |--------SashForm(main)-------------------------| |
> | | |
> Tree |SashFormright| |
> | | |
> |
> |------------------------------------------------
>
> then I want to change the sashForm(main)'s Tree by my input of one's
> menubar's
> input(a menuitem's click will brings front a Dialog which accept some
> user's input),and render the different Tree in the SashForm(main).I have
> write the dialog and receive user's input,like this: dialog.open()(returns
> String[] represent user's input),then I use the result to render different
> Tree,but it does raise a "widgt is disposed" Exception.
> All above suggest the shell should like a Access Control List's access,and
> I'm guesting the wrong is I don't understand the event listner
> machalism,then who can give me a right method to design the Framework? Or
> give me any suggestions.
>
>
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