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Event when a form becomes visible [message #23939]

Sat, 13 December 2008 11:18

Eclipse User

Originally posted by: news.s237965939.online.de

I there an event which is fired everytime when a form becomes visible?
And which I can catch from inside the form. When the user switches away
from a form in my app, and later switches back, parameters may have
changed in the meantime so the form has to be reinitialized.

TIA,
Hans

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Re: Event when a form becomes visible [message #23980 is a reply to message #23939]

Sat, 13 December 2008 23:29

David Marques

Messages: 80
Registered: July 2009

Member

Hello Hans,

Unfortunately there are no callback methods for the events you described.
You would have to implement it yourself. Take a look at the Displayable
isShown() method, maybe it can help you.

[],

David Marques

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Re: Event when a form becomes visible [message #24016 is a reply to message #23980]

Mon, 15 December 2008 07:53

Eclipse User

Originally posted by: news.s237965939.online.de

David Marques schrieb:
> Hello Hans,
>
> Unfortunately there are no callback methods for the events you
> described. You would have to implement it yourself. Take a look at the
> Displayable isShown() method, maybe it can help you.

Thanks David, so i have to roll my own. Btw, I asked the wrong question.
It's all about a canvas, not a form as I wrote but I guess that doesn't
change much, right?

Hans

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Re: Event when a form becomes visible [message #24049 is a reply to message #24016]

Mon, 15 December 2008 12:44

David Marques

Messages: 80
Registered: July 2009

Member

Hello Hans,

Fortunately the Canvas class has the following methods that can help you.

protected void showNotify();
protected void hideNotify();

I hope it works for you.

Best Regards,

David Marques

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Re: Event when a form becomes visible [message #24077 is a reply to message #24049]

Mon, 15 December 2008 18:11

Eclipse User

Originally posted by: news.s237965939.online.de

David Marques schrieb:
> Hello Hans,
>
> Fortunately the Canvas class has the following methods that can help you.
>
> protected void showNotify();
> protected void hideNotify();

Oh, that's good to know. Thanks again, David

Hans

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