[news.eclipse.platform.swt] Re: Screen patches, still occuring?

["Mark Melvin" <mark_melvin@xxxxxxxx>]

On Thu, 27 Mar 2008 11:07:30 -0400, Dave Wegener <wegener@xxxxxxxxxxxxxx>  
wrote:

> "Robert B" <oh1226@xxxxxxxxxxx> wrote in message
> news:fsed4g$nk6$1@xxxxxxxxxxxxxxxxxxxx
> > Unpatched means that not-repainted clipping rectangles.
> > I had lots of them in the past. Most common ones are
> > small fellows, say, 20x10 pixels, or vertical or horizontal
> > lines, or areas not repainted, retaining previous images.
> >
> > On Eclipse SDK, open lots of elements for "Package explore"
> > make both scrollbars appear. Then pull down the SDK
> > so the right-bottom rectangle area (where two scrollbars
> > meet) goes below Windows task bar. Try up and down. You will
> > see the area get unpatched images!
> Following your steps, I don't see any "unpatched images".  The windows
> repaint corectly.  I'm running Eclipse 3.3.2 on Windows 2000 Pentium 4  
> 3ghz
> with 1GB of RAM.

I know exactly what he means and I have not found a reason for it yet.  I  
filed a bug here:

https://bugs.eclipse.org/bugs/show_bug.cgi?id=219187

It was suggested it could be due to "A custom draw Tree with lots of  
visible items" not being able to redraw itself quickly enough, but I saw  
it with no tree view at all - just dragging a notepad window over an  
Eclipse showing empty views in fact (see the screenshot in the bug).


> > This could be a related problem. The problem I seen normally
> > happens in the spacing area where no components are
> > drawn. For example, margin areas in formlayout, etc.
> >
> > R.
> >
> >
> >
> >
> >
> >
> > "Eric Rizzo" <eclipse-news@xxxxxxxxxxxx> wrote in message
> > news:fsdk70$3bh$4@xxxxxxxxxxxxxxxxxxxx
> > > Robert B wrote:
> > >> Hi,
> > >>
> > >> When I tested SWT-written programs about 15 months ago
> > >> on single CPU 1.6GHz Windows machine with SWT 3.2 installed,
> > >> I had lots of unpatched screen patches. This was happening especially
> > >> when I use several windows and shuttle around them.
> > >>
> > >> Now I use dual process of the same speed with SWT 3.3.
> > >> The interface is now Windows XP. In addition, most unpatched
> > >> screen patches are gone. Now it happens very seldom!
> > >> But does happen.
> > >
> > > I don't know about anyone else, but I don't know what you mean by
> > > "unpatched screen patches." Can you explain in more detail, maybe even
> > > provide a screen-shot?
> > >
> > > Eric