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what is the corresponding part of swt against the JsplitPane of swing? [message #438451]

Thu, 24 June 2004 15:43

Eclipse User

Originally posted by: curtis.hotmail.com

what is the corresponding part of swt against the JsplitPane of swing?

and I found that Button can not be subclassed?

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Re: what is the corresponding part of swt against the JsplitPane of swing? [message #438452 is a reply to message #438451]

Thu, 24 June 2004 16:49

Jeff Myers

Messages: 396
Registered: July 2009

Senior Member

Curtis,

Check out org.eclipse.swt.custom.SashForm which is similar to JSplitPane.

Yes, in most cases widgets in SWT are not meant to be subclassed.

- Jeff

curtis wrote:

> what is the corresponding part of swt against the JsplitPane of swing?
>
> and I found that Button can not be subclassed?
>

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Re: what is the corresponding part of swt against the JsplitPane of swing? [message #438453 is a reply to message #438451]

Thu, 24 June 2004 16:52

Jean-Christophe Deprez

Messages: 133
Registered: July 2009

Senior Member

>>>>>>>>>>>>>>>>>> Original Message <<<<<<<<<<<<<<<<<<

On 6/24/2004, 8:43:59 AM, curtis@hotmail.com (curtis) wrote regarding
what is the corresponding part of swt against the JsplitPane of swing?:

> what is the corresponding part of swt against the JsplitPane of swing?

Try using SashForm.

> and I found that Button can not be subclassed?

Yeah. A bunch of this stuff cannot be subclassed. No idea why. Oh and
of course
the classes aren't marked final e.g.
public final class Button {}
so you don't get a compiler error the minute you break this rule. (
Instead there's
this silly runtime check.. )

Btw if you just want to and some simple properties to a non-subclassible
widget take a look at the Widget.setData/getData methods.

-- d

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Re: what is the corresponding part of swt against the JsplitPane of swing? [message #438461 is a reply to message #438453]

Thu, 24 June 2004 20:43

Iran

Messages: 32
Registered: July 2009

Member

> Yeah. A bunch of this stuff cannot be subclassed. No idea why. Oh and
> of course
> the classes aren't marked final e.g.

I think it's because swt "talks" to OS APIs in different ways
to create visual elements. That's because we have one swt.jar
for each platform.

iran

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