RE: [Java-gnome-developer] handlers as ints?

[R. A. R. D. <riv...@ya...>]

--- Jeffrey Morgan <Jef...@Br...> wrote:
> > Hello
> > 
> > Checking the docs I have found that handlers are treated as java
> ints.
> > As we know ints are fixed 32 bits in Java, I wonder what will 
> > happen in
> > 64bits OSes? As I see it, two solutions are posible: 1. Have a
> handler
> > table to make the conversion, 2. Change everything to long and
> > recompile.
> > None of this is a good solution.
> > I think using a java.awt Peer like solution works better. Hiding
> the
> > handler in an interface that can be implemented in every platform
> is a
> > way to work around this problem without the need to change the
> library
> > in every platform.
> > Something like:
> > 
> > public interface Handler {}
> > 
> > public class GObject {
> >     public GObject(Handler handler) {
> >       ...
> >     }
> >     ...
> > }
> > 
> > In native code, every platform have to implement a pair of
> functions
> > like the following:
> > 
> > int javaToNative(JObject * handler); // receives a Handler instance
> > JObject * nativeToJava(int handler); // returns a Handler instance
> > 
> > probably inline functions that should be used whenever is necesary
> to
> > access a handler.
> > 
> > Then you can have a OS32bitHandler with a java int field inside,
> and a
> > OS64bitHandler with a java long field inside, and the code in
> > javaToNative and nativeToJava will conditionally use one of those
> > implementations depending on the arch.
> > 
> > What do you think?
> 
> It seems like a reasonable solution but will we not
> have to change all code that passes the int handle
> to use jobject instead?
> 
> -Jeff
> 
Yep, the code have to be changed. :-(

I have seen also a function to obtain a gtk object from the java
equivalent, I hope that updating this function makes most of the work.
If this is not the case or I misunderstand the code, then I suppose
every component native code need to be updated :-(.

I think that's the better aproach.

I volunteer to help on it and send the code changed to anyone available
to check my work, but first I prefer to check if the developers accept
the change.

rivas.


__________________________________
Do you Yahoo!?
Protect your identity with Yahoo! Mail AddressGuard
http://antispam.yahoo.com/whatsnewfree