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

Re: [Java-gnome-developer] how to build reusable components with glade

[Nicholas R. <ni...@mn...>]

Hi,

I have reusable glade components in my java-gnome application.  for
example, if you have a Frame (or an HBox or whatever widget) and want to
reuse that widget in several places in your application, you can get an
instance of that widget using the following code:

try {
    myframe_glade = new LibGlade( getClass().

getResourceAsStream( "/myapp.glade" ), 
                                  this, "my_reusable_frame" );
} catch ( Exception e ) {
    e.printStackTrace();
}

What this does is create a new LibGlade instance that starts at the
"my_reusable_frame" widget node in the glade XML file
"myapp.glade" (NOTE: that i'm loading the glade XML file as a resource
(from within a JAR file actually), but you could just pass a file name
(String) as the first parameter too.)  You can then call:

(Frame)myframe_glade.getWidget( "my_reusable_frame" )

to get that Frame instance.  You can also get any widgets that are
defined as sub-widget nodes of "my_reusable_frame" by calling
myframe_glade.getWidget( "widget_in_my_reusable_frame" ).

The downside of this is that you're parsing your glade file once for
each LibGlade object you create.  In practice i've found that libglade
parses the XML file very quickly and that this does not really slow
things down, but perhaps my glade file is not that big. :-)  Also you do
have multiple LibGlade objects lying around.  You'll probably want to
have a class (MyReusableFrame) that includes myframe_glade as one of
it's members (calling the above code in the constructor, for example)
and then instantiate this class whenever/wherever you need that frame.

Hope this helps,
Nick

On Sat, 2005-05-28 at 21:16 +0200, Tomasz Mielnik wrote:
> Hi 
> I'm still lerning java-gnome together with glade capabilities so i
> encountered a issue that I can't solve.
> 
> Is there w way to build a window inside glade editor ant then use this
> window as my own widget inside other windows (ie; in other VBox)?
> Or how can I achieve this functionality with java-gnome/glade?
> 
> In SWT for instance there this concept of Shells Where toplevel window
> is a shell and any container is a Shell including top level window in
> another container is straightforward.
> 
> Any help as always is appreciated.
> 

Re: [Java-gnome-developer] how to build reusable components with glade

[Joao V. <jvi...@ya...>]

--- Tomasz Mielnik <tmi...@co...> escreveu:
> well actually this is what I was afraid of. I think it would be better
> to design your "components" in visual tool and then use them.

Well, i too think it would be better to design components in a visual tool, but the visual tool is
just not ready; patience. I don't know when Glade 3 will be released, but there is Gazpacho, which
is based on a pre-Glade3 code, and _maybe_ it can do that:
http://gazpacho.sicem.biz/

I've never tried it, maybe i'll do this today.

> 
> But before givin' up I want to ask some GTK gurus here. What for is a
> methond
> 
> Window.makeWidget(handle); ?
> I thought that using this 
> 
> Window.makeWidget(myWidget.getHandle()); 
> would work?

You shouldn't use that method; it's just for internal use (the reason why it's not
private/protected/etc is because it may be used by other bindings in other packages). To do what
you want you would just instantiate a Widget like you'd do with any Java object. Example:

public class MyWidget extends VBox {
   public MyWidget() {
      super();
      add(new Button("Hello World"));
   }
}

then use it:

Window win = new Window(WindowType.TOPLEVEL);
win.add( new MyWidget() );

Cheers,
J.V.



__________________________________________________
Converse com seus amigos em tempo real com o Yahoo! Messenger 
http://br.download.yahoo.com/messenger/ 

Re: [Java-gnome-developer] error defining signals with glade

[Michael K. <mk...@gm...>]

> > I think the method needs to be void:
> > 
> >   public void on_button1_clicked() {
> >     System.out.println("clicked");
> >   }
> > 
> > If you check out the tutorial on the java-gnome site, I think it
> > explicitly says this somewhere.
> you are right, but it does not make any difference, either :-((.
> 
> cheers
> gaboro

Hello,

I'm new to JG and this list, but perhaps I can help ...

I have Ubuntu Hoary, too, and I encountered the same problem.
I updated to JG 2.10 and everything runs fine. I'm not aware of Hoary
packages for JG 2.10 so you have to compile it yourself.

Cheers,
Michael

Re: [Java-gnome-developer] error defining signals with glade

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

> 
> I have the same problem still.
> maybe it's the problem of old java-gnome version?
> I use :
> libgladejava2.8.so
> libgtkjava2.4.so
> libgnomejava2.8.so

It might be a version issue. I'm running Java 1.4.2_08, libgtk-java
2.6.1, libgnome-java and libglade-java at 2.10.1 myself. I was able to
run the code that Olah provided with no problems.

Regards,
Rem

Re: [Java-gnome-developer] error defining signals with glade

[Tomasz M. <tmi...@co...>]

Dnia 28-05-2005, sob o godzinie 22:35 +0200, Oláh Gábor napisał(a):
> 2005-05-28, szo keltezéssel 13.25-kor Keith Irwin ezt írta:
> > I think the method needs to be void:
> > 
> >   public void on_button1_clicked() {
> >     System.out.println("clicked");
> >   }
> > 
> > If you check out the tutorial on the java-gnome site, I think it
> > explicitly says this somewhere.
> you are right, but it does not make any difference, either :-((.

I have the same problem still.
maybe it's the problem of old java-gnome version?
I use :
libgladejava2.8.so
libgtkjava2.4.so
libgnomejava2.8.so

regards.

-- 
t.m.
Tomasz Mielnik

Re: [Java-gnome-developer] Memory Usage for small app

[Joao V. <jvi...@ya...>]

--- "Neil J. Patel" <njp...@gm...> escreveu:

> Hi,

Hi Neil,

> 	I was inspired by an OSNews article yester which pointed out developing
> gnome apps with java. I follwed the examples and all worked fine (with a
> little tweaking), the question i have is that a very simple application
> compiled with gcj takes up quite a lot of memory:
> 
> Total : 55.1 MB
> RSS   : 22.1 MB
> Shared : 16.3 MB
> 
> I just wanted to now if this is normal, and/if there are any option when
> compiling that can help.

It would be interesting if we'd create an example in C and Java, and make a comparison. Let's put
this in our TODO list. I think those numbers are "normal": gtk itself takes lots of memory, and
there's also the VM (mainly the garbage collector). Currently JG is going through a major memory
management improvement, though.

Cheers,
J.V.


__________________________________________________
Converse com seus amigos em tempo real com o Yahoo! Messenger 
http://br.download.yahoo.com/messenger/ 

Re: [Java-gnome-developer] how to build reusable components with glade

[Joao V. <jvi...@ya...>]

--- Tomasz Mielnik <tmi...@co...> escreveu:
> Hi

Hi Thomas,
 
> I'm still lerning java-gnome together with glade capabilities so i
> encountered a issue that I can't solve.
> 
> Is there w way to build a window inside glade editor ant then use this
> window as my own widget inside other windows (ie; in other VBox)?
> Or how can I achieve this functionality with java-gnome/glade?
> 

If i understood correctly, you want to have some kind of widget (like a HBox) which you can use in
many windows. In my opinion, the best way to do that is doing it in code, instead of Glade. For
example, you'd create a class which extends gtk.HBox. In the constructor you'd add anything you
want; and then you'd just do 'new MyWidget()' do add it wherever you want. I've done that before,
could send you the code if you want.

Glade 2, IMHO, was made thinking of building Windows; so it's not very nice for just building
components. It shouldn't be like this (and i think Glade 3 probably will be much better), but
that's the way it is now.

Cheers,
J.V.



	
	
		
____________________________________________________
Yahoo! Mail, cada vez melhor: agora com 1GB de espaço grátis! http://mail.yahoo.com.br

Re: [Java-gnome-developer] error defining signals with glade

[<ga...@cw...>]

2005-05-28, szo keltez=C3=A9ssel 13.25-kor Keith Irwin ezt =C3=ADrta:
> I think the method needs to be void:
>=20
>   public void on_button1_clicked() {
>     System.out.println("clicked");
>   }
>=20
> If you check out the tutorial on the java-gnome site, I think it
> explicitly says this somewhere.
you are right, but it does not make any difference, either :-((.

cheers
gaboro

Re: [Java-gnome-developer] error defining signals with glade

[Keith I. <ke...@ke...>]

I think the method needs to be void:

  public void on_button1_clicked() {
    System.out.println("clicked");
  }

If you check out the tutorial on the java-gnome site, I think it
explicitly says this somewhere.

-K

On Sat, 2005-05-28 at 22:16 +0200, Oláh Gábor wrote:
> hiya,
> 
> 2005-05-27, p keltezéssel 18.51-kor Jeff Morgan ezt írta:
> > On 5/27/05, Oláh Gábor <ga...@cw...> wrote:
> > > the error says:
> > > java.lang.reflect.InvocationTargetException: ListenerDelegate.create
> > > failure
> > 
> > The problem here is that you have defined a callback 
> > (on_button_execute_clicked) but this method doesn't exist
> > in your example.  This is not a Java-GNOME bug.  If you
> > add this method you will see that it works fine.
> thanks for the comment, but defining the method does no difference - i
> get the same error...
> 
> short example: 
> 
> package org.testing;
> import java.io.FileNotFoundException;
> import java.io.IOException;
> import org.gnu.glade.GladeXMLException;
> import org.gnu.glade.LibGlade;
> import org.gnu.gtk.Gtk;
> 
> public class HotplugManager {
> 
> 	LibGlade glade;
> 	
> 	public HotplugManager() throws GladeXMLException,  
>                                        FileNotFoundException, 
>                                       IOException {
> 		glade = new LibGlade("test.glade", this);
> 	}
> 	
> 	public int on_button1_clicked() {
> 		System.out.println("pressed");
> 		return 0;
> 	}	
> 	
> 	public static void main(String[] args) {
> 		
> 		HotplugManager hotplugman;	
> 		
> 		Gtk.init(args);
> 		try {
> 			hotplugman = new HotplugManager();
> 		} catch(Exception e) {
> 			e.printStackTrace();
> 		}
> 		Gtk.main();
> 		
> 	}
> }
> 
> test.glade: 
> 
> <?xml version="1.0" standalone="no"?> <!--*- mode: xml -*-->
> <!DOCTYPE glade-interface SYSTEM "http://glade.gnome.org/glade-2.0.dtd">
> 
> <glade-interface>
> 
> <widget class="GtkWindow" id="window1">
>   <property name="visible">True</property>
>   <property name="title" translatable="yes">window1</property>
>   <property name="type">GTK_WINDOW_TOPLEVEL</property>
>   <property name="window_position">GTK_WIN_POS_NONE</property>
>   <property name="modal">False</property>
>   <property name="resizable">True</property>
>   <property name="destroy_with_parent">False</property>
>   <property name="decorated">True</property>
>   <property name="skip_taskbar_hint">False</property>
>   <property name="skip_pager_hint">False</property>
>   <property name="type_hint">GDK_WINDOW_TYPE_HINT_NORMAL</property>
>   <property name="gravity">GDK_GRAVITY_NORTH_WEST</property>
>   <property name="focus_on_map">True</property>
> 
>   <child>
>     <widget class="GtkVBox" id="vbox1">
>       <property name="visible">True</property>
>       <property name="homogeneous">False</property>
>       <property name="spacing">0</property>
> 
>       <child>
> 	<widget class="GtkButton" id="button1">
> 	  <property name="visible">True</property>
> 	  <property name="can_focus">True</property>
> 	  <property name="label" translatable="yes">button</property>
> 	  <property name="use_underline">True</property>
> 	  <property name="relief">GTK_RELIEF_NORMAL</property>
> 	  <property name="focus_on_click">True</property>
> 	  <signal name="clicked" handler="on_button1_clicked"
> last_modification_time="Fri, 27 May 2005 20:51:54 GMT"/>
> 	</widget>
> 	<packing>
> 	  <property name="padding">0</property>
> 	  <property name="expand">False</property>
> 	  <property name="fill">False</property>
> 	</packing>
>       </child>
>     </widget>
>   </child>
> </widget>
> 
> </glade-interface>
> 
> 
> cheers
> gaboro
> 
> 
> 
> -------------------------------------------------------
> This SF.Net email is sponsored by Yahoo.
> Introducing Yahoo! Search Developer Network - Create apps using Yahoo!
> Search APIs Find out how you can build Yahoo! directly into your own
> Applications - visit http://developer.yahoo.net/?fr=offad-ysdn-ostg-q22005
> _______________________________________________
> java-gnome-developer mailing list
> jav...@li...
> https://lists.sourceforge.net/lists/listinfo/java-gnome-developer

Re: [Java-gnome-developer] error defining signals with glade

[<ga...@cw...>]

hiya,

2005-05-27, p keltez=C3=A9ssel 18.51-kor Jeff Morgan ezt =C3=ADrta:
> On 5/27/05, Ol=C3=A1h G=C3=A1bor <ga...@cw...> wrote:
> > the error says:
> > java.lang.reflect.InvocationTargetException: ListenerDelegate.create
> > failure
>=20
> The problem here is that you have defined a callback=20
> (on_button_execute_clicked) but this method doesn't exist
> in your example.  This is not a Java-GNOME bug.  If you
> add this method you will see that it works fine.
thanks for the comment, but defining the method does no difference - i
get the same error...

short example:=20

package org.testing;
import java.io.FileNotFoundException;
import java.io.IOException;
import org.gnu.glade.GladeXMLException;
import org.gnu.glade.LibGlade;
import org.gnu.gtk.Gtk;

public class HotplugManager {

	LibGlade glade;
=09
	public HotplugManager() throws GladeXMLException, =20
                                       FileNotFoundException,=20
                                      IOException {
		glade =3D new LibGlade("test.glade", this);
	}
=09
	public int on_button1_clicked() {
		System.out.println("pressed");
		return 0;
	}=09
=09
	public static void main(String[] args) {
	=09
		HotplugManager hotplugman;=09
	=09
		Gtk.init(args);
		try {
			hotplugman =3D new HotplugManager();
		} catch(Exception e) {
			e.printStackTrace();
		}
		Gtk.main();
	=09
	}
}

test.glade:=20

<?xml version=3D"1.0" standalone=3D"no"?> <!--*- mode: xml -*-->
<!DOCTYPE glade-interface SYSTEM "http://glade.gnome.org/glade-2.0.dtd">

<glade-interface>

<widget class=3D"GtkWindow" id=3D"window1">
  <property name=3D"visible">True</property>
  <property name=3D"title" translatable=3D"yes">window1</property>
  <property name=3D"type">GTK_WINDOW_TOPLEVEL</property>
  <property name=3D"window_position">GTK_WIN_POS_NONE</property>
  <property name=3D"modal">False</property>
  <property name=3D"resizable">True</property>
  <property name=3D"destroy_with_parent">False</property>
  <property name=3D"decorated">True</property>
  <property name=3D"skip_taskbar_hint">False</property>
  <property name=3D"skip_pager_hint">False</property>
  <property name=3D"type_hint">GDK_WINDOW_TYPE_HINT_NORMAL</property>
  <property name=3D"gravity">GDK_GRAVITY_NORTH_WEST</property>
  <property name=3D"focus_on_map">True</property>

  <child>
    <widget class=3D"GtkVBox" id=3D"vbox1">
      <property name=3D"visible">True</property>
      <property name=3D"homogeneous">False</property>
      <property name=3D"spacing">0</property>

      <child>
	<widget class=3D"GtkButton" id=3D"button1">
	  <property name=3D"visible">True</property>
	  <property name=3D"can_focus">True</property>
	  <property name=3D"label" translatable=3D"yes">button</property>
	  <property name=3D"use_underline">True</property>
	  <property name=3D"relief">GTK_RELIEF_NORMAL</property>
	  <property name=3D"focus_on_click">True</property>
	  <signal name=3D"clicked" handler=3D"on_button1_clicked"
last_modification_time=3D"Fri, 27 May 2005 20:51:54 GMT"/>
	</widget>
	<packing>
	  <property name=3D"padding">0</property>
	  <property name=3D"expand">False</property>
	  <property name=3D"fill">False</property>
	</packing>
      </child>
    </widget>
  </child>
</widget>

</glade-interface>


cheers
gaboro

[Java-gnome-developer] how to build reusable components with glade

[Tomasz M. <tmi...@co...>]

Hi 
I'm still lerning java-gnome together with glade capabilities so i
encountered a issue that I can't solve.

Is there w way to build a window inside glade editor ant then use this
window as my own widget inside other windows (ie; in other VBox)?
Or how can I achieve this functionality with java-gnome/glade?

In SWT for instance there this concept of Shells Where toplevel window
is a shell and any container is a Shell including top level window in
another container is straightforward.

Any help as always is appreciated.

-- 
t.m.
Tomasz Mielnik

Re: [Java-gnome-developer] error defining signals with glade

[Tomasz M. <tmi...@co...>]

Dnia 27-05-2005, pią o godzinie 18:51 -0400, Jeff Morgan napisał(a):
> ailure
> 
> The problem here is that you have defined a callback 
> (on_button_execute_clicked) but this method doesn't exist
> in your example.  This is not a Java-GNOME bug.  If you
> add this method you will see that it works fine.

i'm new to java-gnome and I had the same problem. so forgive me my
(maybe lame) question but where this method should be implemented? in
which class?

-- 
t.m.
Tomasz Mielnik

[Java-gnome-developer] Memory Usage for small app

[Neil J. P. <njp...@gm...>]

Hi,
	I was inspired by an OSNews article yester which pointed out developing
gnome apps with java. I follwed the examples and all worked fine (with a
little tweaking), the question i have is that a very simple application
compiled with gcj takes up quite a lot of memory:

Total : 55.1 MB
RSS   : 22.1 MB
Shared : 16.3 MB

I just wanted to now if this is normal, and/if there are any option when
compiling that can help.

Using FC4T3 java packages,
the gcj commands were:

gcj --classpath=/usr/share/java/gtk2.6.jar:/usr/share/java/gnome2.10.jar
\:/usr/share/java/glade2.10.jar -l gtkjava -l gnomejava -l gladejava -o
ExampleGNOME --main=ExampleGNOME ExampleGNOME.java

gcj = 4.0.0-8
gtk-java = 2.6.2-3
gnome-java = 2.10.1-3
glade-java = 2.10.1-5

attached the source of the small program.

Thanks,


-- 
Neil J. Patel <njp...@gm...>

Re: [Java-gnome-developer] error defining signals with glade

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

On Fri, 2005-27-05 at 14:19 -0700, Keith Irwin wrote:
> On Fri, 2005-05-27 at 22:58 +0200, Oláh Gábor wrote:
> > i am trying to write a simple app using java-gnome and glade, but i
> > receive an error whenever i try to define a signal for a button in
> > glade.

While signal autoconnection from LibGlade works in many circumstances,
you're going to have problems when you try to connect signals with
complex prototypes.

So, frankly, if you're working in java-gnome, I would recommend you use
the 

    WhateverWidget whatever = (WhateverWidgit)
glade.getWidget("whatever");
...
        whatever.addListener(new WhateverListener() {
        	public void whateverEvent(WhateverEvent event) {
        		// your code here
        	}
        });
        
construct that is familiar from other Java graphical user interface
toolkits. 

Personally, I find that whole thing just a little ugly, but I have to
admit that having done both ways, I find that the Listener/Event way
provides much greater control over the events, especially in terms of
getting to the details of the event.

So that's what I recommend.

[Eclipse makes this dead easy, by the way]

AfC
Calgary

-- 
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] error defining signals with glade

[Jeff M. <ku...@gm...>]

On 5/27/05, Ol=E1h G=E1bor <ga...@cw...> wrote:
> the error says:
> java.lang.reflect.InvocationTargetException: ListenerDelegate.create
> failure

The problem here is that you have defined a callback=20
(on_button_execute_clicked) but this method doesn't exist
in your example.  This is not a Java-GNOME bug.  If you
add this method you will see that it works fine.

>=20
> i receive this with sun's javavm 1.5 and gij-4, and i receive this for
> each signal i have defined...
>=20
> anyway, i am on ubuntu hoary, versions libgtk2-java/libglade-java:
> 2.8.3-2
>=20
> Sourcecode:
>=20
> public class HotplugManager {
>=20
>         LibGlade glade;
>=20
>         public HotplugManager() throws GladeXMLException,
>                                        FileNotFoundException,
>                                        IOException {
>                 glade =3D new LibGlade("data/hotplugmanager.glade", this)=
;
>         }
>=20
>         public static void main(String[] args) {
>=20
>                 HotplugManager hotplugman;
>=20
>                 Gtk.init(args);
>                 try {
>                         hotplugman =3D new HotplugManager();
>                 } catch(Exception e) {
>                         e.printStackTrace();
>                 }
>                 Gtk.main();
>=20
>         }
> }
>=20
> as you can see, i am not trying to catch the signal it is only defined
> in the glade file:
> <widget class=3D"GtkButton" id=3D"button_execute">
>                   <property name=3D"visible">True</property>
>                   <property name=3D"can_default">True</property>
>                   <property name=3D"can_focus">True</property>
>                   <property name=3D"label">gtk-execute</property>
>                   <property name=3D"use_stock">True</property>
>                   <property name=3D"relief">GTK_RELIEF_NORMAL</property>
>                   <property name=3D"focus_on_click">True</property>
>                   <signal name=3D"clicked" handler=3D"on_button_execute_c=
licked"
> last_modification_time=3D"Fri, 27 May 2005 20:56:57 GMT"/>
> </widget>
>=20
> does anyone have any ideas?
> thanks in advance
> cheers
> gaboro
>=20
>=20
>=20
>=20
> -------------------------------------------------------
> This SF.Net email is sponsored by Yahoo.
> Introducing Yahoo! Search Developer Network - Create apps using Yahoo!
> Search APIs Find out how you can build Yahoo! directly into your own
> Applications - visit http://developer.yahoo.net/?fr=3Doffad-ysdn-ostg-q22=
005
> _______________________________________________
> java-gnome-developer mailing list
> jav...@li...
> https://lists.sourceforge.net/lists/listinfo/java-gnome-developer
>=20


--=20
Jeffrey Morgan

"The highest reward for a man's toil is not
what he gets for it, but what he becomes by it"
    - Jon Ruskin

Re: [Java-gnome-developer] error defining signals with glade

[Keith I. <ke...@ke...>]

On Fri, 2005-05-27 at 22:58 +0200, Ol=C3=A1h G=C3=A1bor wrote:
> hiya,
> i am trying to write a simple app using java-gnome and glade, but i
> receive an error whenever i try to define a signal for a button in
> glade.

Do you think it's related to:

	http://bugzilla.gnome.org/show_bug.cgi?id=3D305620

which I posted today?  Seems that only some of the signals have the
problem, or is it all of them in your experience?

Keith


> the error says:
> java.lang.reflect.InvocationTargetException: ListenerDelegate.create
> failure
>=20
> i receive this with sun's javavm 1.5 and gij-4, and i receive this for
> each signal i have defined...
>=20
> anyway, i am on ubuntu hoary, versions libgtk2-java/libglade-java:
> 2.8.3-2
>=20
> Sourcecode:
>=20
> public class HotplugManager {
>=20
> 	LibGlade glade;
> =09
> 	public HotplugManager() throws GladeXMLException,=20
>                                        FileNotFoundException,=20
>                                        IOException {
> 		glade =3D new LibGlade("data/hotplugmanager.glade", this);
> 	}
> =09
> 	public static void main(String[] args) {
> 	=09
> 		HotplugManager hotplugman;
> 	=09
> 		Gtk.init(args);
> 		try {
> 			hotplugman =3D new HotplugManager();
> 		} catch(Exception e) {
> 			e.printStackTrace();
> 		}
> 		Gtk.main();
> 	=09
> 	}
> }
>=20
> as you can see, i am not trying to catch the signal it is only defined
> in the glade file:=20
> <widget class=3D"GtkButton" id=3D"button_execute">
> 		  <property name=3D"visible">True</property>
> 		  <property name=3D"can_default">True</property>
> 		  <property name=3D"can_focus">True</property>
> 		  <property name=3D"label">gtk-execute</property>
> 		  <property name=3D"use_stock">True</property>
> 		  <property name=3D"relief">GTK_RELIEF_NORMAL</property>
> 		  <property name=3D"focus_on_click">True</property>
> 		  <signal name=3D"clicked" handler=3D"on_button_execute_clicked"
> last_modification_time=3D"Fri, 27 May 2005 20:56:57 GMT"/>
> </widget>
>=20
> does anyone have any ideas?=20
> thanks in advance
> cheers
> gaboro
>=20
>=20
>=20
>=20
> -------------------------------------------------------
> This SF.Net email is sponsored by Yahoo.
> Introducing Yahoo! Search Developer Network - Create apps using Yahoo!
> Search APIs Find out how you can build Yahoo! directly into your own
> Applications - visit http://developer.yahoo.net/?fr=3Doffad-ysdn-ostg-q=
22005
> _______________________________________________
> java-gnome-developer mailing list
> jav...@li...
> https://lists.sourceforge.net/lists/listinfo/java-gnome-developer

[Java-gnome-developer] error defining signals with glade

[<ga...@cw...>]

hiya,
i am trying to write a simple app using java-gnome and glade, but i
receive an error whenever i try to define a signal for a button in
glade.

the error says:
java.lang.reflect.InvocationTargetException: ListenerDelegate.create
failure

i receive this with sun's javavm 1.5 and gij-4, and i receive this for
each signal i have defined...

anyway, i am on ubuntu hoary, versions libgtk2-java/libglade-java:
2.8.3-2

Sourcecode:

public class HotplugManager {

	LibGlade glade;
	
	public HotplugManager() throws GladeXMLException, 
                                       FileNotFoundException, 
                                       IOException {
		glade = new LibGlade("data/hotplugmanager.glade", this);
	}
	
	public static void main(String[] args) {
		
		HotplugManager hotplugman;
		
		Gtk.init(args);
		try {
			hotplugman = new HotplugManager();
		} catch(Exception e) {
			e.printStackTrace();
		}
		Gtk.main();
		
	}
}

as you can see, i am not trying to catch the signal it is only defined
in the glade file: 
<widget class="GtkButton" id="button_execute">
		  <property name="visible">True</property>
		  <property name="can_default">True</property>
		  <property name="can_focus">True</property>
		  <property name="label">gtk-execute</property>
		  <property name="use_stock">True</property>
		  <property name="relief">GTK_RELIEF_NORMAL</property>
		  <property name="focus_on_click">True</property>
		  <signal name="clicked" handler="on_button_execute_clicked"
last_modification_time="Fri, 27 May 2005 20:56:57 GMT"/>
</widget>

does anyone have any ideas? 
thanks in advance
cheers
gaboro

Re: [Java-gnome-developer] A little Problem

[Ralph H. <ra...@gm...>]

Am Freitag, den 27.05.2005, 02:29 -0300 schrieb Arx Henrique:
> try this:
> 
> or better, put in button.addlisntener this
> 
> button1.addListener(new ControlExample());
> 
> you dont need getControl method
> 
Hello Arx,

Ok, this works, It was very distressing for me :(
Thanx.  I'm sure the next Problem will come.

Ralph
-- 
Ralph Henneberger <ra...@gm...>

Re: [Java-gnome-developer] A little Problem

[Arx H. <ar...@gm...>]

try this:

or better, put in button.addlisntener this

button1.addListener(new ControlExample());

you dont need getControl method



> package presentation.programm;
> import org.gnu.gtk.*;
> import org.gnu.glade.*;
> import org.gnu.gnome.Program;
> import control.ControlExample;
>=20
>=20
> public class Example{
>         Button button;

>         ControlExample control =3D new ControlExample();

>=20
>         public Example() {
>                 try {
>                         LibGlade glade =3D new LibGlade("glade/2.glade", =
this);
>                         button =3D (Button) glade.getWidget("button1");
>                 } catch (Exception e) {
>                 }
>                 button.addListener(getControl());
>         }
>         public ControlExample getControl(){
>                 return this.control;
>         }
>         public static void main(String[] args)  {
>                 Program.initGnomeUI("Hello", "0.1", args);
>                 new Example();
>                 Gtk.main();
> }
> }
>=20
> -------------- End Example.java --------------------

[Java-gnome-developer] A little Problem

[Ralph H. <ra...@gm...>]

Hi, 

sorry for my bad english!

I have a problem with this little program. I will split the program into
and control Class. I have create a litlle gui with glade. When i start
the program i become an Exception, dont understand this... :(


Exception in thread "main" java.lang.NullPointerException
	at org.gnu.gtk.Button.fireButtonEvent(Button.java:293)
	at org.gnu.gtk.Button.handleEnter(Button.java:307)
	at org.gnu.gtk.Gtk.gtk_main(Native Method)
	at org.gnu.gtk.Gtk.main(Gtk.java:55)
	at presentation.programm.Example.main(Example.java:26)
Exception in thread "main" java.lang.NullPointerException
	at org.gnu.gtk.Button.fireButtonEvent(Button.java:293)
	at org.gnu.gtk.Button.handleLeave(Button.java:311)
	at org.gnu.gtk.Gtk.gtk_main(Native Method)
	at org.gnu.gtk.Gtk.main(Gtk.java:55)
	at presentation.programm.Example.main(Example.java:26)

This Exception come when i move the mouse over the button. 

Greets Ralph

Oh, thanks for the TreeView Guide. This was very helpful for me!!!


-------------- Example.java --------------------

package presentation.programm;
import org.gnu.gtk.*;
import org.gnu.glade.*;
import org.gnu.gnome.Program;
import control.ControlExample;


public class Example{
	Button button;
	ControlExample control;

	public Example() {
		try {
			LibGlade glade = new LibGlade("glade/2.glade", this);
			button = (Button) glade.getWidget("button1");								
		} catch (Exception e) {			
		}
		button.addListener(getControl());
	}
	public ControlExample getControl(){
		return control;
	}	
	public static void main(String[] args)  {		
		Program.initGnomeUI("Hello", "0.1", args);
		new Example();
		Gtk.main();		
}
}

-------------- End Example.java --------------------

-------------- ControlExample.java --------------------

package control;

import org.gnu.gtk.event.*;

public class ControlExample implements ButtonListener {
	public ControlExample() {

	}
	
	public void buttonEvent(ButtonEvent event) {		
			System.out.println("Hello");		
	}
}

-------------- End ControlExample.java --------------------

-------------- 2.glade --------------------
<?xml version="1.0" standalone="no"?> <!--*- mode: xml -*-->
<!DOCTYPE glade-interface SYSTEM "http://glade.gnome.org/glade-2.0.dtd">

<glade-interface>
<requires lib="gnome"/>

<widget class="GtkWindow" id="window1">
  <property name="visible">True</property>
  <property name="title" translatable="yes">window1</property>
  <property name="type">GTK_WINDOW_TOPLEVEL</property>
  <property name="window_position">GTK_WIN_POS_NONE</property>
  <property name="modal">False</property>
  <property name="resizable">True</property>
  <property name="destroy_with_parent">False</property>
  <property name="decorated">True</property>
  <property name="skip_taskbar_hint">False</property>
  <property name="skip_pager_hint">False</property>
  <property name="type_hint">GDK_WINDOW_TYPE_HINT_NORMAL</property>
  <property name="gravity">GDK_GRAVITY_NORTH_WEST</property>

  <child>
    <widget class="GtkButton" id="button1">
      <property name="visible">True</property>
      <property name="can_focus">True</property>
      <property name="label">gnome-stock-about</property>
      <property name="use_stock">True</property>
      <property name="relief">GTK_RELIEF_NORMAL</property>
      <property name="focus_on_click">False</property>
    </widget>
  </child>
</widget>

</glade-interface>


-------------- End 2.glade --------------------

-- 
Ralph Henneberger <ra...@gm...>

Re: [Java-gnome-developer] Compile natively and static in windows

[Nicholas R. <ni...@mn...>]

There seems to be several problems with compiling natively on windows:

1. The WindowsCompilation page (which I wrote :-) says to run configure
with the --without-gcj-compile option.  This makes the build process
skip the building of the libgtkjava library.  This library is needed
however if you want to compile natively with GCJ.  On linux, having
configured and make'd without the --without-gcj-compile option, i am
able to natively compile using this command:

% cd doc/examples/TestTree
% gcj --classpath=/usr/local/jg-2.10/share/java/gtk2.6.jar
--main=TestTree.TestTree -L/usr/local/jg-2.10/lib -lgtkjava -o TestTree
TestTree.java

(NOTE: i also configured using the --prefix=/usr/local/jg-2.10 option.)

So, it should be the same process under windows (run configure without
the --without-gcj-compile option; use the gcj line above).  However
there are other problems. :-)

2. The configure script will not work if you don't use the
--without-gcj-compile option due to a bug in the gcj detection macros we
use.  I patched my version to fix the gcj detection under windows, but
still have not been able to create a native executable under windows.  I
am going to dig deeper here as i think there are some other issues
related to the gcj build process under windows, which prevents the
correct creation of the libgtkjava.so library.

I'll let you know once i find out more.

Cheers,
Nick


On Mon, 2005-05-23 at 20:17 +0200, llanero wrote:
> 2005/5/23, Joao Victor <jvi...@ya...>:
> > Are you able to run the example program, like it is said in the WindowsCompilation? (i mean, just
> > run, without compiling it natively/statically). I'm asking that so we can narrow the problem.
> 
> Yes, the examples work great, see below. I also can compile run
> applications from eclipse.
> 
> I also tried:
> 
> $ ld -l gtkjar2.6
> c:\minGW\bin\ld.exe: cannot find -lgtkjar2.6
> 
> $ ld -l gtkjava  
> c:\minGW\bin\ld.exe: cannot find -lgtkjava
> 
> Running the examples:
> 
> /usr/local/src/libgtk-java-2.6.2/doc/examples
> $ ./runExample.sh testgtk/TestGTK
> Java-Gnome Example Application Launcher
> 
> Checking for jvm and compiler availability...
>         gcj and gij - appear to be ok
> 
>         You are using Open Source java
>         virtual machine and compiler: this is so good!
> 
> Checking if library paths exist...
>         /usr/local/lib - appears to be ok
> 
> Testing JAR archives...
>         /usr/local/share/java/gtk2.6-2.6.2.jar - appears to be ok
> 
> Compilation successful
> Application successfully terminated
> 
> 
> 
> 
> 

Re: [Java-gnome-developer] Compile natively and static in windows

[llanero <ll...@gm...>]

2005/5/23, Joao Victor <jvi...@ya...>:
> Are you able to run the example program, like it is said in the WindowsCo=
mpilation? (i mean, just
> run, without compiling it natively/statically). I'm asking that so we can=
 narrow the problem.

Yes, the examples work great, see below. I also can compile run
applications from eclipse.

I also tried:

$ ld -l gtkjar2.6
c:\minGW\bin\ld.exe: cannot find -lgtkjar2.6

$ ld -l gtkjava =20
c:\minGW\bin\ld.exe: cannot find -lgtkjava

Running the examples:

/usr/local/src/libgtk-java-2.6.2/doc/examples
$ ./runExample.sh testgtk/TestGTK
Java-Gnome Example Application Launcher

Checking for jvm and compiler availability...
        gcj and gij - appear to be ok

        You are using Open Source java
        virtual machine and compiler: this is so good!

Checking if library paths exist...
        /usr/local/lib - appears to be ok

Testing JAR archives...
        /usr/local/share/java/gtk2.6-2.6.2.jar - appears to be ok

Compilation successful
Application successfully terminated





--=20
Manel Clos
ll...@gm...
http://www.webpersonal.net/llanero/

Re: [Java-gnome-developer] Compile natively and static in windows

[Joao V. <jvi...@ya...>]

--- llanero <ll...@gm...> escreveu:
> I have the environment built using the WindowsCompilation wiki page. I
> tried with -lgtkjava and -lgtkjava2.6. No luck.
> 

Are you able to run the example program, like it is said in the WindowsCompilation? (i mean, just
run, without compiling it natively/statically). I'm asking that so we can narrow the problem.

Arx and Jeff, do you have any suggestions? (i still haven't tried running JG on Windows).

Cheers,
J.V.



	
	
		
____________________________________________________Yahoo! Mail, cada vez melhor: agora com 1GB de espaço grátis! http://mail.yahoo.com.br

Re: [Java-gnome-developer] Compile natively and static in windows

[llanero <ll...@gm...>]

I have the environment built using the WindowsCompilation wiki page. I
tried with -lgtkjava and -lgtkjava2.6. No luck.

Anyone with the same environment?

2005/5/22, Lamex <la...@sa...>:
>  answer: -lgtkjava

--=20
Manel Clos
ll...@gm...
http://www.webpersonal.net/llanero/

[Java-gnome-developer] Re: starting with java-gnome

[Tom T. <tr...@re...>]

>>>>> "Tomasz" == Tomasz Mielnik <tmi...@co...> writes:

Tomasz> 1. Is it possible to use java collections (like Vector, Hashtable, etc)
Tomasz> with java-gtk/java-gnome. I ask bcoz i saw that gtk/glib is using it's
Tomasz> own list/maps implementation?

This roused my curiosity and I looked at org.gnu.glib.List and
org.gnu.glib.GListString.

Would it be useful for these to implement java.util.List?
Besides being more java-like, in 1.5 it would mean you could use one
as an argument to the new foreach construct.

Tomasz> 5. Did someone tried to use jakarta subprojects inside GTK app(commoncs
Tomasz> for instance) and compile them with gcj?

I haven't, but I don't think you'll have any real trouble doing this.
FWIW Eclipse uses gtk (not via java-gnome though) and several things
from the ASF (ant, tomcat, lucene at least) without problems.  If you
run FC4, a some of this stuff is already gcj-compiled in the distro.

Tom