[platform-swt-dev] GC on native components and painting

[Minh Chiem <minhchiem@xxxxxxxxxxxx>]

Hi.

I've followed the guide on 
http://www.eclipse.org/articles/Article-SWT-images/graphics-resources.html#Transparency
to find out how to do transparency.

I've added a paintlistener on a button however, when you go to click on 
the button there seems to be no refresh so it appears as if a image as 
disappeared.

It looks like there's another paint listener when the button is pressed 
so what I've done is made the button repaint everytime the mouse down 
and mouse up event occurs and that seems to be a nice work around. 
However, I've got lots of buttons/toolbar items that have images and 
adding mouse listeners to all the buttons makes code look really messy 
IMHO. Since I can't just extend the Button so that it encapsulates the 
extra repainting behaviour, is another way to approach this problem?

BTW, I'm running this on the windows version of SWT.