Re: SWT and AWT

[Stanley Brown <stanley dot brown at zimmer dot com>]

> as i understand it there are some insurmountable problems required to
> implement the awt interface using swt. one of these is the fact that swt
> widgets cannot be reparented, 
You are correct that you cannot directly subclass a SWT widget.  The AWT 
classes would have to be thin "interface" like classes that wrap the 
actual SWT control:

public class Button
{
   private swt.eclipse.swt.widget.Button swtButton;
   private String text;
   ....(more properties)

   public void setText(String text)
   {
      this.text = text;
   }
   ...(more methods)
}

> and must be constructed in the context of
> their parent (presumably "because this is the way windows does it").
>  
Think of SWT composites as AWT containers.  You dont actually create an 
instance of the SWT object (swtButton above) until you "add" it to the 
AWT container.  So, the AWT Component class would probably have 
something as such:

public abstract class Component
{
   protected abstract void createWidget(Container container);
}

which extended by my Button example:

protected void createWidget(Container container)
{
  swtButton = new org.eclipse.swt.widget.Button(container.getComposite, 
SWT.NONE);
}

Theres probably a better way of doing this but its what I came up with 
in a couple minutes.