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Home » Eclipse Projects » Standard Widget Toolkit (SWT) » Drawing Artifacts on UI space(Windows 7 64-bit)
Drawing Artifacts on UI space [message #977818] Fri, 09 November 2012 15:58 Go to next message
Lena Sommer is currently offline Lena Sommer
Messages: 1
Registered: November 2012
Junior Member
Hi there,

so I make a Shell and put a Group inside
in that group I create a SashForm
in the SashForm there are 2 Composites
each of those has a Canvas

so thats how it looks on start-up:
pokit.org/get/?86960fb8507a61080e1aa1f7990ae018.jpg

however after drawing around the Sash line to the left, back to the right and back to the middle-ish position (pretty much getting the first artifacts when pulling it a bit to the left and then back to the right, on the space it covered before there would now be artifacts):
pokit.org/get/?69a0964b71d2e0e07b6536036c5c4f26.jpg
Re: Drawing Artifacts on UI space [message #985655 is a reply to message #977818] Thu, 15 November 2012 15:49 Go to previous message
Grant Gayed is currently offline Grant Gayed
Messages: 2151
Registered: July 2009
Senior Member
My guess is that you are drawing the images on your two Canvases
somewhere other than in SWT.Paint listeners. These are where draws need
to happen in order to respond to damaged regions, etc. For an example
of this see the Canvas snippets at
http://www.eclipse.org/swt/snippets/#canvas .

If this does not help then you'll need to provide a simple snippet that
shows your current implementation, template:
http://www.eclipse.org/swt/faq.php#whatisasnippet .

Grant


On 11/9/2012 1:02 PM, Lena Sommer wrote:
> Hi there,
>
> so I make a Shell and put a Group inside
> in that group I create a SashForm
> in the SashForm there are 2 Composites
> each of those has a Canvas
>
> so thats how it looks on start-up:
> pokit.org/get/?86960fb8507a61080e1aa1f7990ae018.jpg
>
> however after drawing around the Sash line to the left, back to the
> right and back to the middle-ish position (pretty much getting the first
> artifacts when pulling it a bit to the left and then back to the right,
> on the space it covered before there would now be artifacts):
> pokit.org/get/?69a0964b71d2e0e07b6536036c5c4f26.jpg
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