[news.eclipse.platform.swt] Re: Graphic Context in View

[Stefan Zeiger <szeiger@xxxxxxxxxxxx>]

mylove wrote:

> public void createPartControl(Composite parent)
> {
>     display = parent.getDisplay();
>        
>     toolkit = new FormToolkit(parent.getDisplay());
>     form = toolkit.createScrolledForm(parent);
>     form.setBackground(new 
> org.eclipse.swt.graphics.Color(org.eclipse.swt.widgets.Display.getDefault(), 
> 255, 255, 255));
>        form.setSize(800,600);
>               GC gc = new GC(form.getDisplay(),SWT.NONE);
>         gc.drawLine(100,100,500,500);
>         gc.dispose();
>     }

You cannot just draw on an SWT Control at any time. Controls in SWT are 
not double buffered. You need to register a Paint listener and do the 
painting on the PaintEvent's GC whenever you get a PaintEvent.

--
Stefan Zeiger    http://www.szeiger.de    http://www.novocode.com
My SWT controls: http://www.novocode.com/swt