[news.eclipse.platform.swt] Transparent areas of image appearing black

[Prashant Deva <prashant.deva@xxxxxxxxx>]

I have a png in my plugin , which has areas as transparent.
When it is drawn normally without any decoration drawn on top of it,it 
draws fine.

But when i draw a 'decorator' on top of it, using the 'drawImage' 
function of CompositeImageDescriptor, the transparent areas become black!!

Why is this happening? How do i prevent this?

PRASHANT