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Custom widget with ScrollBar [message #451561]

Thu, 03 March 2005 01:12

Eclipse User

Originally posted by: jverano.usinet.org

I'm trying to create a custom widget that paints a list of custom rendered
items. I would like to show a vertical scrollbar (anchored to the right)
that defines the vertical window in which a subset of my custom items are
shown.

I cannot use JFace, GEF, Draw2D, etc and must only use SWT.

How do I do this?

Re: Custom widget with ScrollBar [message #451607 is a reply to message #451561]

Thu, 03 March 2005 04:42

Eclipse User

Why not implement the computeSize() method of your custom widget and
then wrap it in a ScrolledComposite? That way you hav to do nothing and
obtain also horizontal scrolling. You can also investigate the interface
of Scrollable and try to customize your component behaviour when scrolled.

Simone

Jake Verano wrote:
>
> I'm trying to create a custom widget that paints a list of custom
> rendered items. I would like to show a vertical scrollbar (anchored to
> the right) that defines the vertical window in which a subset of my
> custom items are shown.
>
> I cannot use JFace, GEF, Draw2D, etc and must only use SWT.
>
> How do I do this?
>

Re: Custom widget with ScrollBar [message #451614 is a reply to message #451561]

Thu, 03 March 2005 07:05

Eclipse User

Your custom widget should subclass either Canvas or Composite. Create your
custom widget with the style SWT.V_SCROLL and then manage your scrollbar.
Below are some examples.

Scrolling with Canvas:

http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.swt.sni ppets/src/org/eclipse/swt/snippets/Snippet48.java?rev=HEAD&a mp;content-type=text/vnd.viewcvs-markup

Scrolling with Composite:

http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.swt.sni ppets/src/org/eclipse/swt/snippets/Snippet9.java?rev=HEAD&am p;content-type=text/vnd.viewcvs-markup

"Jake Verano" <jverano@usinet.org> wrote in message
news:d069sf$kfb$1@www.eclipse.org...
>
> I'm trying to create a custom widget that paints a list of custom rendered
> items. I would like to show a vertical scrollbar (anchored to the right)
> that defines the vertical window in which a subset of my custom items are
> shown.
>
> I cannot use JFace, GEF, Draw2D, etc and must only use SWT.
>
> How do I do this?
>

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