java-gnome-developer — For people using the bindings to write their own applications

Re: [Java-gnome-developer] [java-gnome-hackers] java-gnome 2.16.0 released

[John R. <Joh...@Su...>]

Andrew this is great. I'll be building this on OpenSolaris nevada build 
48 and Gnome 2.16 over the next week. Will keep you posted with how it 
goes, but having all the autotools patches in makes my life a lot easier :)

Many thanks,

JR

Andrew Cowie wrote:
> This release series, collectively called java-gnome 2.16.0, consists of
> updates to all the libraries in the java-gnome family.
>
>         glib-java      0.4.0  *
>         cairo-java     1.0.6  *
>         libgtk-java    2.10.0 *
>         libgnome-java  2.12.6 *
>         libglade-java  2.12.7 *
>         libgconf-java  2.12.5 * and
>         libvte-java    0.12.2 *
>
> One notable feature of this release is that all the org.gnu.glib code
> common to all the bindings is now actually in glib-java where it
> belongs. Note that glib-java and libgtk-java have both moved up a minor
> version reflecting this migration.
>
> The other notable contribution was a large set of patches from John Rice
> of Sun Microsystems fixing up the autotools infrastructure so that
> java-gnome will build and install on Open Solaris!
>
> There are still a number of outstanding bugs that have been nagging
> certain developers; expect to see a java-gnome 2.16.1 shortly if fixes
> for those problems present themselves. Likewise, libeds-java still needs
> to be caught up; we'll release 0.6.0 of that when Sean has time.
>
> AfC
> Sydney
>
>   
> ------------------------------------------------------------------------
>
> -------------------------------------------------------------------------
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
>   
> ------------------------------------------------------------------------
>
> _______________________________________________
> java-gnome-hackers mailing list
> jav...@li...
> https://lists.sourceforge.net/lists/listinfo/java-gnome-hackers
>   

[Java-gnome-developer] java-gnome 2.16.0 released

[Andrew C. <an...@op...>]

This release series, collectively called java-gnome 2.16.0, consists of
updates to all the libraries in the java-gnome family.

        glib-java      0.4.0  *
        cairo-java     1.0.6  *
        libgtk-java    2.10.0 *
        libgnome-java  2.12.6 *
        libglade-java  2.12.7 *
        libgconf-java  2.12.5 * and
        libvte-java    0.12.2 *

One notable feature of this release is that all the org.gnu.glib code
common to all the bindings is now actually in glib-java where it
belongs. Note that glib-java and libgtk-java have both moved up a minor
version reflecting this migration.

The other notable contribution was a large set of patches from John Rice
of Sun Microsystems fixing up the autotools infrastructure so that
java-gnome will build and install on Open Solaris!

There are still a number of outstanding bugs that have been nagging
certain developers; expect to see a java-gnome 2.16.1 shortly if fixes
for those problems present themselves. Likewise, libeds-java still needs
to be caught up; we'll release 0.6.0 of that when Sean has time.

AfC
Sydney

--=20
Andrew Frederick Cowie
Managing Director
Operational Dynamics Consulting Pty Ltd

http://www.operationaldynamics.com/
Management Consultants specializing in strategy,
organizational architecture, procedures to survive
change, and performance hardening for the people
and systems behind the mission critical enterprise.

Worldwide:

Sydney    +61 2 9977 6866
New York  +1 646 472 5054
Toronto   +1 416 848 6072
London    +44 207 1019201

Re: [Java-gnome-developer] Glade integration

[Remy S. <rem...@gm...>]

Sending to the list since I always forget to do so when replying.

-----------------------------------

Hi Sheldon,

>           I am working towards integrating glade in Eclipse for developing
> mobile GTK applications. I have 2 solutions 1. to write a java wrapper for
> glade that can be used in eclipse. 2. Is it possible to use the java-gnome
> library to perform such an integration.

For 1, I think that's what JGlade's trying to accomplish
(http://jglade.sourceforge.net)? Since I don't really follow that
project, I don't know how mature it is and whether it's still under
development, but you may want to take a look at it anyway.

For 2, I recall trying this myself a while ago, but things didn't
quite work out if I recall correctly. I don't remember if it crashed,
but it didn't look like something easy to debug, so I just dropped the
issue and haven't tackled it again since.

Regards,
Rem

[Java-gnome-developer] Glade integration

[Sheldon D. <she...@gm...>]

Hi,

          I am working towards integrating glade in Eclipse for developing
mobile GTK applications. I have 2 solutions 1. to write a java wrapper for
glade that can be used in eclipse. 2. Is it possible to use the java-gnome
library to perform such an integration.


Regards,
Sheldon

Re: [Java-gnome-developer] gtk.Entry problems

[Andrew C. <an...@op...>]

On Mon, 2006-10-09 at 23:53 +0200, Marek Piechut wrote:
> I am trying to get content from gtk.Entry which has setVisible(false)
> and what i get by using getText() method is always an empty String.
> I'm trying to get content from the configuration dialog and can get
> content from all Entries but the "invisible" ones. Is there any special
> way to get text from them? Or other way to get something secret from
> user without echoing?=20

I was able to duplicate this. Would you be so kind as top open a bug
please? [Bugs are always welcome for "it should work but doesn't"]

A workaround is to use the Entry's getText() method, rather than the
EntryEvent's getText().

AfC
Sydney

[Java-gnome-developer] Robert Bodo is out of the office.

[Robert B. <Rob...@cc...>]

I will be out of the office starting  2006.10.03 and will not return until
2006.10.17.

I will respond to your message when I return.

[Java-gnome-developer] gtk.Entry problems

[Marek P. <mc...@o2...>]

Hello.

I am trying to get content from gtk.Entry which has setVisible(false)
and what i get by using getText() method is always an empty String.
I'm trying to get content from the configuration dialog and can get
content from all Entries but the "invisible" ones. Is there any special
way to get text from them? Or other way to get something secret from
user without echoing?=20


Thanks.

--=20
Please encrypt every mail you can. Privacy is your right.
Don't let anyone take it from you.
Look at GnuPG or PGP and ask for my key.

Re: [Java-gnome-developer] Problems generating .jar

[Emmanuel R. <emm...@gm...>]

Pablo Martín wrote:
> Hi all,
>  
> I'm developing an application under eclipse with an interface designed 
> on glade,  when I generate the .jar file into workspace project, I can 
> run it without problems, but, when I generate the .jar file out of the 
> workspace and I run it, I obtain a FileNotFounException when program 
> try to obtain the .glade file:
>
>     ...
>     glade = new LibGlade("./gui/project.glade"), this)
>     ...
>      
>      
>
> It looks like java can`t read the file location when it's into a jar 
> File, how should I define this file location to read it correctly?
>  
Hi Pablo,

If you want to include the project files into a Jar file, you must load 
the files through a class loader.
The trick is to use a class which you know to be bundle into the jar, 
basically any one of the classes in your project.
Then use the very same class loader that loaded your class to find the 
glade file, or any other resource in the jar.

Here's what you can do in order to fix your problem:

    // Find the resource pointing to the glade file through the same 
class loader used for this project's code
    // NOTE the folder 'gui' was removed see below for a reason
    InputStream stream = 
this.getClass().getClassLoader().getResourceAsStream("project.glade");

    // Load the glade file through a resource
    glade = new LibGlade(stream, this, null);

Now, if you look carefully the path of the resource doesn't include the 
name of the folder 'gui' anymore.
I did this in order to have eclipse and the jar play nicely with each 
other.  The problem is that if I want to run the code without any 
modifications from Eclipse I have to tell him where to find the 
project.glade file. This can be done by adding the gui folder into the 
classpath of the project.

There are two things that you must do now:
1) Pack the file project.glade into the jar without the folder gui.
2) Add the folder gui to the classpath of Eclipse: Go into Eclipse Menu 
-> Project -> Properties -> Java Build Path -> Libraries -> Add Class 
Folder and choose  'gui' as a folder.

Now you should be able to run the code both from Eclipse and a jar 
without any modification.


Emmanuel Rodriguez

[Java-gnome-developer] Problems generating .jar

[<pab...@ho...>]

<html><div style='background-color:'><DIV class=RTE>Hi all,</DIV>
<DIV class=RTE>&nbsp;</DIV>
<DIV class=RTE dir=ltr>I'm developing an application under eclipse with an interface designed on glade,&nbsp; when I generate the .jar file into workspace project, I can run it without problems, but, when I generate the .jar file out of the workspace and I run it, I obtain a FileNotFounException when program try to obtain the .glade file:</DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=RTE dir=ltr>...</DIV>
<DIV class=RTE>glade = new LibGlade("./gui/project.glade"), this)</DIV>
<DIV class=RTE>...</DIV>
<DIV class=RTE>&nbsp;</DIV>
<DIV class=RTE>&nbsp;</DIV></BLOCKQUOTE>
<DIV class=RTE dir=ltr>It looks like&nbsp;java can`t read the file location when it's into a jar File, how should I define this file location to read it correctly?</DIV>
<DIV class=RTE dir=ltr>&nbsp;</DIV>
<DIV class=RTE dir=ltr>Thanks.</DIV>
<DIV class=RTE dir=ltr>Pablo.</DIV></div><br clear=all><hr>Tu horóscopo diario, semanal y gratuito.  <a href="http://g.msn.com/8HMBESES/2728??PS=47575" target="_top">Cartas, tarot y predicciones en MSN Horóscopo</a> </html>

[Java-gnome-developer] java-gnome 2.14.3 released

[Andrew C. <an...@op...>]

Today we did a point release to push out bug fixes to the stable releese
series of our libraries.

java-gnome 2.14.3
-----------------

glib-java      0.2.6
cairo-java     1.0.5
libgtk-java    2.8.7  *
libgnome-java  2.12.5 *
libglade-java  2.12.6 *
libgconf-java  2.12.4
libvte-java    0.12.1
libeds-java    0.5.1

Huge props go to the guys at Sun who did the example code cleanups.
Great contribution! For futher details, see
http://java-gnome.sourceforge.net/cgi-bin/bin/view/Main/NewsTwoFourteenThre=
e=20
and feel free to edit that item with additional details.

AfC
Sydney

--=20
Andrew Frederick Cowie

Technology strategy, managing change, establishing procedures,
and executing successful upgrades to mission critical business
infrastructure.

http://www.operationaldynamics.com/

Sydney   New York   Toronto   London

Re: [Java-gnome-developer] Tray icon status

[Emmanuel R. <emm...@gm...>]

Andrew Cowie wrote:
> On Mon, 2006-09-18 at 21:09 +0200, Kyrre Ness Sjobak wrote:
>   
>> Doesn't Azureus have a tray icon? How do they do it?
>>     
Azureus uses SWT which has support for a tray icon.
Swing also has support for a tray icon.
It's not impossible to add support for the tray icon.
The problem is that java-gnome doesn't have a lot  of developers, which 
is not the case of the toolkits that I listed above which are backed up 
respectively by IBM and SUN.
Thats why some GTK widgets are lacking a mapping in java-gnome.

--
Emmanuel Rodriguez

Re: [Java-gnome-developer] Tray icon status

[Andrew C. <an...@op...>]

On Mon, 2006-09-18 at 21:09 +0200, Kyrre Ness Sjobak wrote:
> Doesn't Azureus have a tray icon? How do they do it?

"Doing it" technically isn't the problem. It's "doing" the
implementation that takes work. In the current 2.x series Java bindings,
it takes considerable marginal effort, say, O(10N) to add N of API.* As
with any open source project, it is what people contribute, so hopefully
someone will contribute the work who needs it.

My expectation is that in the future, adding API will be trivial, of the
complexity O(1), which is actually the justification for investing in
that work.

AfC
Sydney

*: People through "Order N" around all the time; I get the sense that
many don't really know what they're talking about - ie, I don't. I would
have thought that Order (2N) is generally equal to Order (N), but
perhaps it's not quite as logarithmic as I expected. Anyway, the point
is, right now our bindings take a lot of manual labour to add shit.

Re: [Java-gnome-developer] Tray icon status

[Andrew C. <an...@op...>]

On Mon, 2006-09-18 at 15:40 +0200, S=F8ren Mathiasen wrote:

> What's the status of the tray icon implementation ?

Remy has gone to China and they've censored him from working on open
source projects (!), so he won't be able to finish the work he started.=20

See http://bugzilla.gnome.org/show_bug.cgi?id=3D317700
and http://bugzilla.gnome.org/show_bug.cgi?id=3D330432

If someone else finishes up the patch, we can certainly get it into
libgtk-java 2.10.x

Otherwise, it should "just be there" in java-gnome 4.0 as a consequence
of generating code off of the .defs files.

AfC
Sydney

[Java-gnome-developer] Tray icon status

[M. <li...@so...>]

Hi,

What's the status of the tray icon implementation ?
        
Regards, Soren
        
        
        

Re: [Java-gnome-developer] Problem with Threading (I guess)

[Andrew C. <an...@op...>]

On Sun, 2006-09-17 at 15:54 +0200, Stefan Prelle wrote:
> Hi all,
>=20
> I am trying to build a splashscreen that shows the process while the
> application is loading data. I found that after a short time, no
> progress changes are visible while the loading continues.

Worker thread.

http://research.operationaldynamics.com/projects/examples/dist/worker-4.tar=
.gz

[Incidentally, the events bug that the web page Emmanuel pointed at is
long gone from java-gnome. We really need to rectify or ditch that wiki]

[Also, I personally don't much care for the way we handle this problem -
ie the CustomEvents(Runable) technique - but there won't be an
appreciable change unless we make a significant architectural shift.
Fingers crossed we can figure out a way to do it]

AfC
Sydney

--=20
Andrew Frederick Cowie

Technology strategy, managing change, establishing procedures,
and executing successful upgrades to mission critical business
infrastructure.

http://www.operationaldynamics.com/

Sydney   New York   Toronto   London

Re: [Java-gnome-developer] Problem with Threading (I guess)

[Emmanuel R. <emm...@gm...>]

Hi,

I think that the problem is because  you are accessing your widgets from 
your second thread.
Only the event loop thread is allowed to manipulate the widgets.
Take a look at the following page there is an explanation and some 
sample code.
http://java-gnome.sourceforge.net/cgi-bin/bin/view/Main/MultiThreaded


Stefan Prelle wrote:
> Hi all,
>
> I am trying to build a splashscreen that shows the process while the
> application is loading data. I found that after a short time, no
> progress changes are visible while the loading continues.
>
> I broke my problems down to a simple test program that forks a thread to
> change the progress and that waits a specific amount of time between two
> changes. 
>
> public class SplashTest {
>
>     static ProgressBar bar;
>     static TextView text;
>     
>     //------------------------------------------------------
>     public static void main(String[] args) {
>         Gtk.init(args);
>         
>         // Open a window with a progress bar and a text view.
>         Window window = new Window();
>         VBox box = new VBox(false,5);
>         window.add(box);
>         bar = new ProgressBar();
>         box.add(bar);
>         text = new TextView();
>         box.add(text);
>         window.showAll();
>         
>         // Now create progress changing thread
>         Thread thread = new Thread(new Runnable(){
>            public void run() {
>                for (int i=0; i<=100; i+=10) {
>                    System.out.println("Now "+i);
>                    bar.setFraction(i/100.0);
>                    bar.setText(i+"%");
>                    text.getBuffer().setText("Loaded "+i+"%");
>                    synchronized(this) {
>                        try {
>                            Thread.sleep(1000);
>                        } catch (InterruptedException e) {
>                            // TODO Auto-generated catch block
>                            e.printStackTrace();
>                        }
>                    }
>                }                
>             }});
>         
>         thread.start();
>         Gtk.main();
>     }
> }
>
> When I do run this program, the progress bar stops at 10 or 20 percent,
> the text view stops at 0 or 10 percent. 
> If you reduce the waiting time between changes to a lower value - e.g.
> 500ms - everything is fine.
>
> Any idea what is causing this?
>
> Regards,
>   Stefan
>
>
> -------------------------------------------------------------------------
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
> _______________________________________________
> java-gnome-developer mailing list
> jav...@li...
> https://lists.sourceforge.net/lists/listinfo/java-gnome-developer
>
>   

[Java-gnome-developer] Problem with Threading (I guess)

[Stefan P. <pr...@tz...>]

Hi all,

I am trying to build a splashscreen that shows the process while the
application is loading data. I found that after a short time, no
progress changes are visible while the loading continues.

I broke my problems down to a simple test program that forks a thread to
change the progress and that waits a specific amount of time between two
changes. 

public class SplashTest {

    static ProgressBar bar;
    static TextView text;
    
    //------------------------------------------------------
    public static void main(String[] args) {
        Gtk.init(args);
        
        // Open a window with a progress bar and a text view.
        Window window = new Window();
        VBox box = new VBox(false,5);
        window.add(box);
        bar = new ProgressBar();
        box.add(bar);
        text = new TextView();
        box.add(text);
        window.showAll();
        
        // Now create progress changing thread
        Thread thread = new Thread(new Runnable(){
           public void run() {
               for (int i=0; i<=100; i+=10) {
                   System.out.println("Now "+i);
                   bar.setFraction(i/100.0);
                   bar.setText(i+"%");
                   text.getBuffer().setText("Loaded "+i+"%");
                   synchronized(this) {
                       try {
                           Thread.sleep(1000);
                       } catch (InterruptedException e) {
                           // TODO Auto-generated catch block
                           e.printStackTrace();
                       }
                   }
               }                
            }});
        
        thread.start();
        Gtk.main();
    }
}

When I do run this program, the progress bar stops at 10 or 20 percent,
the text view stops at 0 or 10 percent. 
If you reduce the waiting time between changes to a lower value - e.g.
500ms - everything is fine.

Any idea what is causing this?

Regards,
  Stefan

[Java-gnome-developer] Non-Rectangular windows

[Stefan P. <pr...@tz...>]

Hi all,

I am trying to get a non-rectangular window (showing a progress bar).
=46rom searching around the web, I found hints that applying a Pixbuf of a
PNG with an alpha channel and a mask to a GDK window (and disabling the
decoration) does the trick (at least for the non-rectangular part). At
least for regular GTK+ with newer X Servers.

But when trying to follow these hints in the Java bindings, I am stuck
after loading a Pixbuf or a Bitmap with the image. I don't know how to
set the background of the org.gnu.gtk.Window and I don't know how to use
a org.gnu.gtk.Window and place a GTK widget in it (if this is even
possible).

Can anybody give me an example here? I would really appreciate it.

Regards,
  Stefan
--=20
Stefan Prelle <pr...@tz...>

[Java-gnome-developer] Worker threads

[Andrew C. <an...@op...>]

Someone popped into #java-gnome the other day trying to figure out how
to use CustomEvents to cause GUI actions to be taken from other threads.

A long time ago I was working on something that needed a worker thread
to do do the task at hand while updating a GUI window to show progress.
Since that's when *I* learned how to use java-gnome's CustomEvents
mechanism and since the question seems to come up a lot, I simmered that
bit down into a simple example.

If you want to see it you can grab
http://research.operationaldynamics.com/projects/examples/dist/worker-4.tar=
.gz
and start with the file README.

AfC
Sydney
=20
--=20
Andrew Frederick Cowie
Managing Director
Operational Dynamics Consulting Pty Ltd

http://www.operationaldynamics.com/
Management Consultants specializing in strategy,
organizational architecture, procedures to survive
change, and performance hardening for the people
and systems behind the mission critical enterprise.

Worldwide.

[Java-gnome-developer] Problems with a ComboBoxEntry

[<pab...@ho...>]

<html><div style='background-color:'><DIV class=RTE>
<P>Helle everybody, I'm new developing gtk applications, </P>
<P>I'm trying to add values to a ComboBoxEntry created with Glade, but I'm not be able to obtain it!</P>
<P>Please, anyone can explain me how can i use this widget!!??<BR><BR></P>
<DIV></DIV><FONT color=#000000></DIV>
<DIV></DIV></FONT></div><br clear=all><hr>Busca a la vez en Internet, en directorios, en enciclopedias...  <a href="http://g.msn.com/8HMBESES/2740??PS=47575" target="_top">Atrévete con el nuevo MSN Search</a> </html>

Re: [Java-gnome-developer] Ubuntu, java-gnome issues

[Remy S. <rem...@gm...>]

Hi,

It doesn't appear like you have glib0.2.jar in your classpath. Please try
adding it appending it it on and then try running your program again.

Feel free to join the #java-gnome channel at irc.gimp.net for possibly
speedier responses.

Regards,
Rem

[Java-gnome-developer] Ubuntu, java-gnome issues

[iamamoocow d. <lis...@ya...>]

G'day,


I've just installed java-gnome on my squeaky clean ubuntu 606 install. I did this via synaptic, and i didn't change any settings, repositries or anything.

When I run my program, i get

Exception in thread "main" java.lang.ClassNotFoundException: org.gnu.glib.Struct not found in gnu.gcj.runtime.SystemClassLoader{urls=[file:/home/j/projects/Jim/bin/,file:/usr/share/java/gnome2.12.jar,file:/usr/share/java/gtk2.8.jar], parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}
   at java.net.URLClassLoader.findClass(libgcj.so.7)
   at java.lang.ClassLoader.loadClass(libgcj.so.7)
   at java.lang.ClassLoader.loadClass(libgcj.so.7)
   at java.lang.VMClassLoader.defineClass(libgcj.so.7)
   at java.lang.ClassLoader.defineClass(libgcj.so.7)
   at java.security.SecureClassLoader.defineClass(libgcj.so.7)
   at java.net.URLClassLoader.findClass(libgcj.so.7)
   at java.lang.ClassLoader.loadClass(libgcj.so.7)
   at java.lang.ClassLoader.loadClass(libgcj.so.7)
   at Test.Main.main(Main.java:12)

Presumably org.gnu.glib.Struct lives inside /usr/lib/libglibjava-0.2.so (which is present on my system)

I've done the path thingy:

-Djava.library.path=/usr/lib/

I have played with java-gnome in the past and not had these issues (under fedora) Is this a .deb issue?

with thanks

 		
---------------------------------
Yahoo! Messenger with Voice. Make PC-to-Phone Calls to the US (and 30+ countries) for 2¢/min or less.

[Java-gnome-developer] Architecture disucssion on -hackers

[Andrew C. <an...@op...>]

Hey there developers!

As anyone who has used java-gnome knows, there are a number of areas
where we're not as strong as we could be.

That's no crime - the bindings *are* usable - and certainly no knock on
the successive teams of people who have been hacking on the GTK and
GNOME bindings since 1998. However, we do have a number of areas we need
to clean up. There are non-trivial naming inconsistencies present in the
mapping. There are  glaring coverage omissions. Certain common elements
are implemented inefficiently. This is all in no small part due to the
fact that java-gnome has tracked GTK+ since the earliest days, and so
you see evidence of the evolution of the Glib and GTK APIs instead of
the nice clean interfaces you see today. And of course there was the
java-gnome team's efforts to stay backwards compatible with the code
that was already out there.

Time to go to the next level.

We're beginning a series of discussions on the java-gnome-hackers
mailing list and on #java-gnome about these issues. If you want to
contribute to shaping the outcome, please do join the list. A fair bit
of conceptual work has been done in the past and so I'll be pointing out
historical discussions that will be of interest. Several of us have also
done a fair bit of the API redesign work, and excitement is creeping up.

One thing that is really obvious, however, is that there is no way that
we'll be able to preserve the existing API - indeed, fixing the
inconsistencies is half the point of the effort. This message therefore
also serves as the first formal advertisement of a forthcoming major API
break. That's never easy for developers, but we're pretty sure that the
end result on the other side will be more complete, more stable, and
better performing.

There will therefore likely be no java-gnome 2.18. The next version
after the java-gnome 2.16.z release set will probably be called 4.0 to
clearly signal the API change. Marginal improvements will continue to be
accepted on the 2.y line as long as anyone wants to contribute them.

AfC
Sydney

-- 
Andrew Frederick Cowie
Managing Director
Operational Dynamics Consulting Pty Ltd

http://www.operationaldynamics.com/
Management Consultants specializing in strategy,
organizational architecture, procedures to survive
change, and performance hardening for the people
and systems behind the mission critical enterprise.

Worldwide:

Sydney    +61 2 9977 6866
New York  +1 646 472 5054
Toronto   +1 416 848 6072
London    +44 207 1019201

[Java-gnome-developer] client events

[Josh H. <jos...@ho...>]

Hello all,

I posted here a few weeks ago asking about the java-gnome implementation of 
the cross-process widgets GtkPlug and GtkSocket.  Thank you for the replies. 
  Managed to get Java widgets embedded in a C interface by adding some 
constructors and glue to Plug and sending the windowIDs through a 
DatagramSocket; however, I am having troubles modifying this prototype to 
use the glib client_event/listener scheme built into gtk to handle 
callbacks.  I have gone through the "create a new widget" tutorial and so 
far I can see three ways to possibly do this:

1. Create a new Widget in Java.  An existing widget can be extended and its 
relative Event class type overridden to recognize a client_event.  
Unfortunately, I am not aware of any resources for creating a new widget in 
Java that can send a signal recognized by gtk+ in C.

2.  Wrap the gtk+ client_message functions.  The function 
gdk_event_send_client_message was modified to accept int arguments, casted 
to the correct types, and then wrapped.

void java_gdk_event_send_client_message (int event, int  winidint)
{
  event = gdk_event_new (event);
  winid = (GdkNativeWindow)winidint;

  gdk_event_send_client_message (event, winid);
}

After calling this wrapped function in Java, the VM throws a segmentation 
violation in IA__gdk_event_send_client_message_for_display.  I suspect this 
has to do with the default display.  Is there a way I should be initializing 
this?

3. Create a new Widget in C and wrap it.  I understand this involves calling 
the glib functions g_signal_new and g_signal_emit with user defined events; 
however, I can't seem to create a Java listener to catch the signal.

Is there any easier way to handle the communication with these callbacks?  
Do any of these approaches make sense?  Suggestions?

Thanks,
~Josh Hope

[Java-gnome-developer] File type icons

[Leif <le...@te...>]

Hi list,

I am creating a small application with java-gnome which shall include a 
file list (like the nautilus list view). I would like to use icons for 
each file type, like nautilus and the file chooser dialog do.

Could anyone give me hint how I can find out which icon is associated 
with which file type? Is there an icon registry or something in gnome?

In the Google outback I found a function called 
"gnome_vfs_mime_get_icon", but I don't know if it does what I want and 
if I can access it from my Java application.

Thanks and Bye, Leif