[SWT] Transparent Canvas

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Bernhard Schandl - 13 Apr 2006 17:20 GMT

Hello!

I am working on a GUI with movable icons, similar to Windows Explorer. I
represent icons as class extended by SWT Canvas. However, I would need
the space around the icon to be transparent. Is there a way to
accomplish this, or should I change design and use something apart from
Canvas?

Thanks and regards,
Bernhard

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ducnbyu@aol.com - 15 Apr 2006 00:30 GMT

Sounds like you are heading in the right direction since a Canvas can
have a transparent background, specify style SWT.NO_BACKGROUND in the
constructor.

Here's an example:

http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/org.eclipse.swt.snippets
/src/org/eclipse/swt/snippets/Snippet48.java

Some other useful information, how I navigated to the above, is
available here:

http://www.eclipse.org/swt/widgets/

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Bernhard Schandl - 20 Apr 2006 16:56 GMT

> Sounds like you are heading in the right direction since a Canvas can
> have a transparent background, specify style SWT.NO_BACKGROUND in the
> constructor.

Thanks for the hint. When I use SWT.NO_BACKGROUND for a canvas, the
desktop is visible as background of the canvas, instead of the
(non-transparent) canvas that is arranged beyond it. What am I doing wrong?

Regards, Bernhard

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[SWT] Transparent Canvas

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