berry wrote:
> Hi,
>
> I was wondering if anyone knows what this following
> code means?
>
> public Rectangle getBounds() {
> return JFrame.this.getBounds();
> }
That sort of code is used in inner classes.
One of the swing programmers seems to make a habit of it.
If you have a lot of inner classes I guess its a bit cleaner to qualify this
when you use it. Otherwise it can be confusing if there are several inner
classes
in a Class.
>
>
> >From what I can understand it is making an infinate series
> of recursive calls. I find this kind of code all over Sun's
> source.
Umm no its just a 1.1 qualified this the class qualifier is optional out side
of inner classes.
>
>
> Another question:
>
> With Swing classes, at what point is native code actually
> called to do drwing . If you could tell me, I am wondering what classes it
> happens in and what is specifically happening. In 1.1 it would be
> the peer classes.
I know that one : )
swing uses
Canvas
Frame
Dialog
Window
The native peers are called there.
The native graphics object can draw all over the window.
It's fairly trivial to get a lightweight component to
draw outside of its bounds or over its sub components.
At least is the current JVM. I consider it something of
a security hole.
Mike
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