GTK+ Forums

jnavratil · Joined: 18 Aug 2008 Posts: 4

Greetings!

I'm fairly new to GTK having written a single app using glade-2 and the generated C code. I'm updating the app and wish to use glade-3 for several reasons. I found that I could create an interface and a simple app consisting of a menubar, a toolbar and several other structures with nothing but the on_window_destroy event coded until I added a GnomeAppBar.

Without the GnomeAppBar, the app rendered as expected and the 'destroy' icon properly called the coded callback. After adding the GnomeAppBar to the UI, nothing appeared to render (menus,buttons) and clicking the 'destroy' icon caused the window to be destroyed, but the app continued to run and the on_window_destroy function was never called.

I'm using Fedora 9 on a 32-bit athlon. I'm compiling with -Wall and receiving no errors or warnings. The app isn't coring, it just requires a ^C from the command line to quit.

The code is from a tutorial and is..

Code: (Plaintext)

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#include <gtk/gtk.h>

void
on_window_destroy (GtkObject *object, gpointer user_data)
{
gtk_main_quit();
}

int
main (int argc, char *argv[])
{
GtkBuilder *builder;
GtkWidget *window;

gtk_init (&argc, &argv);

builder = gtk_builder_new ();
gtk_builder_add_from_file (builder, "blender.xml", NULL);

window = GTK_WIDGET (gtk_builder_get_object (builder, "window"));
gtk_builder_connect_signals (builder, NULL);
g_object_unref (G_OBJECT (builder));

gtk_widget_show (window);
gtk_main ();

return 0;
}

dreblen · Posted: Mon Aug 18, 2008 3:50 pm Post subject:

it would be a big help if you posted your "blender.xml" file as well

jnavratil · Joined: 18 Aug 2008 Posts: 4

Minor code change from initial posting, including change to name of xml file.

main.c ....

Code: (Plaintext)

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#include <gtk/gtk.h>

void
on_window_destroy (GtkObject *object, gpointer user_data)
{
printf("Destroying...\n");
gtk_main_quit();
}

void
on_btnPlay_clicked (GtkToolButton *toolbutton, gpointer user_data)
{
}

int
main (int argc, char *argv[])
{
GtkBuilder *builder;
GtkWidget *window;

gtk_init (&argc, &argv);

builder = gtk_builder_new ();
gtk_builder_add_from_file (builder, "appBarError.xml", NULL);

window = GTK_WIDGET (gtk_builder_get_object (builder, "window"));
gtk_builder_connect_signals (builder, NULL);
g_object_unref (G_OBJECT (builder));

gtk_widget_show (window);
gtk_main ();

return 0;
}

appBarError.xml ....

Code: (Plaintext)

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<?xml version="1.0"?>

<interface>
<object class="GtkUIManager" id="uimanager1">
<child>
<object class="GtkActionGroup" id="actiongroup1">
<child>
<object class="GtkAction" id="menuitem1">
<property name="name">menuitem1</property>
<property name="label" translatable="yes">_File</property>
</object>
</child>
<child>
<object class="GtkAction" id="imagemenuitem1">
<property name="stock_id" translatable="yes">gtk-new</property>
<property name="name">imagemenuitem1</property>
</object>
</child>
<child>
<object class="GtkAction" id="imagemenuitem2">
<property name="stock_id" translatable="yes">gtk-open</property>
<property name="name">imagemenuitem2</property>
</object>
</child>
<child>
<object class="GtkAction" id="imagemenuitem3">
<property name="stock_id" translatable="yes">gtk-save</property>
<property name="name">imagemenuitem3</property>
</object>
</child>
<child>
<object class="GtkAction" id="imagemenuitem4">
<property name="stock_id" translatable="yes">gtk-save-as</property>
<property name="name">imagemenuitem4</property>
</object>
</child>
<child>
<object class="GtkAction" id="imagemenuitem5">
<property name="stock_id" translatable="yes">gtk-quit</property>
<property name="name">imagemenuitem5</property>
</object>
</child>
<child>
<object class="GtkAction" id="menuitem2">
<property name="name">menuitem2</property>
<property name="label" translatable="yes">_Edit</property>
</object>
</child>
<child>
<object class="GtkAction" id="imagemenuitem6">
<property name="stock_id" translatable="yes">gtk-cut</property>
<property name="name">imagemenuitem6</property>
</object>
</child>
<child>
<object class="GtkAction" id="imagemenuitem7">
<property name="stock_id" translatable="yes">gtk-copy</property>
<property name="name">imagemenuitem7</property>
</object>
</child>
<child>
<object class="GtkAction" id="imagemenuitem8">
<property name="stock_id" translatable="yes">gtk-paste</property>
<property name="name">imagemenuitem8</property>
</object>
</child>
<child>
<object class="GtkAction" id="imagemenuitem9">
<property name="stock_id" translatable="yes">gtk-delete</property>
<property name="name">imagemenuitem9</property>
</object>
</child>
<child>
<object class="GtkAction" id="menuitem3">
<property name="name">menuitem3</property>
<property name="label" translatable="yes">_View</property>
</object>
</child>
<child>
<object class="GtkAction" id="menuitem4">
<property name="name">menuitem4</property>
<property name="label" translatable="yes">_Help</property>
</object>
</child>
<child>
<object class="GtkAction" id="imagemenuitem10">
<property name="stock_id" translatable="yes">gtk-about</property>
<property name="name">imagemenuitem10</property>
</object>
</child>
</object>
</child>
<ui>
<menubar name="menubar1">
<menu action="menuitem1">
<menuitem action="imagemenuitem1"/>
<menuitem action="imagemenuitem2"/>
<menuitem action="imagemenuitem3"/>
<menuitem action="imagemenuitem4"/>
<separator/>
<menuitem action="imagemenuitem5"/>
</menu>
<menu action="menuitem2">
<menuitem action="imagemenuitem6"/>
<menuitem action="imagemenuitem7"/>
<menuitem action="imagemenuitem8"/>
<menuitem action="imagemenuitem9"/>
</menu>
<menuitem action="menuitem3"/>
<menu action="menuitem4">
<menuitem action="imagemenuitem10"/>
</menu>
</menubar>
</ui>
</object>
<object class="GtkWindow" id="window">
<signal handler="on_window_destroy" name="destroy"/>
<child>
<object class="GtkVBox" id="vbox1">
<property name="visible">True</property>
<child>
<object class="GtkMenuBar" constructor="uimanager1" id="menubar1">
<property name="visible">True</property>
</object>
<packing>
<property name="expand">False</property>
</packing>
</child>
<child>
<object class="GtkToolbar" id="toolbar1">
<property name="visible">True</property>
<child>
<object class="GtkToolButton" id="btnQuit">
<property name="visible">True</property>
<property name="stock_id">gtk-quit</property>
</object>
<packing>
<property name="expand">False</property>
</packing>
</child>
<child>
<object class="GtkToolButton" id="btnClear">
<property name="visible">True</property>
<property name="stock_id">gtk-clear</property>
</object>
<packing>
<property name="expand">False</property>
</packing>
</child>
<child>
<object class="GtkToolButton" id="btnExecute">
<property name="visible">True</property>
<property name="stock_id">gtk-execute</property>
</object>
<packing>
<property name="expand">False</property>
</packing>
</child>
<child>
<object class="GtkToolButton" id="btnPlay">
<property name="visible">True</property>
<property name="stock_id">gtk-media-play</property>
<signal handler="on_btnPlay_clicked" name="clicked"/>
</object>
<packing>
<property name="expand">False</property>
</packing>
</child>
</object>
<packing>
<property name="expand">False</property>
<property name="position">1</property>
</packing>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<child>
<object class="GnomeAppBar" id="appbar1">
<property name="visible">True</property>
<property name="spacing">4</property>
<property name="has_progress">True</property>
<property name="has_status">True</property>
</object>
<packing>
<property name="position">6</property>
</packing>
</child>
</object>
</child>
</object>
</interface>

Remove the 'GnoreAppBar' object and things appear to work properly. The difference between the failing xml file and a successful one is...

Code: (Plaintext)
1 2 3 4 5 6 7 8 9 10 11 12 13 14	188,196c188 < <object class="GnomeAppBar" id="appbar1"> < <property name="visible">True</property> < <property name="spacing">4</property> < <property name="has_progress">True</property> < <property name="has_status">True</property> < </object> < <packing> < <property name="position">6</property> < </packing> --- > <placeholder/>

dreblen · Posted: Sun Aug 24, 2008 7:10 pm Post subject:

it seems to work if you change

Code: (XML/HTML)
1	<object class="GnomeAppBar" id="appbar1">

to

Code: (XML/HTML)
1	<object class="GnomeAppbar" id="appbar1">

all you need to do is change the B in AppBar to a b

jnavratil · Joined: 18 Aug 2008 Posts: 4

Thanks for the response, but no joy. I'm getting the same behaviour. I tried removing the properties and generally mucked about with the class name with the same result. It seems that I am missing something in my installation but, at the same time, gtk_builder_add_from_file may have a bug. Prior to renaming the GnomeAppBar class name, did you observe the behaviour that I did; a window with no menu or tool bar and an unhandled on_window_destroy event?

dreblen · Posted: Mon Aug 25, 2008 2:54 pm Post subject:

yes, prior to changing the class name I had the same behavior.

are you compiling with

Code: (Plaintext)
1	`pkg-config --cflags --libs libgnomeui-2.0`

and are you #including <gnome.h>?
I don't know if these are necessary, but that's what I was compiling with.
You also need to compile with -export-dynamic for the callbacks to be found

errol · Joined: 28 Apr 2008 Posts: 1 Location: UK

GnomeAppBar is a GNOME widget, so you will need to initialise GNOME using gnome_init() before you can use it. The current example is only initialising GTK. You could alternatively use GtkStatusBar instead, if you do not need the progress bar or add a progress bar to it if you really need it.

dreblen · Posted: Mon Aug 25, 2008 3:32 pm Post subject:

good point, although I believe that gnome_init is deprecated and gnome_program_init is to be used instead
http://library.gnome.org/devel/libgnomeui/stable/libgnomeui-gnome-ui-init.html
http://library.gnome.org/devel/libgnome/stable/libgnome-gnome-program.html#gnome-program-init

jnavratil · Joined: 18 Aug 2008 Posts: 4

Thanks for everyone's help. While my application is far from complete or even minimally tested, I am focusing on the specific failure I encountered.. With that in mind, I report that I did not need to #include <gnome.h> or call gnome_program_init in order to get a properly rendered UI. The object name change from GnomeAppBar to GnomeAppbar was required along with the following compile/link command....

Code: (Plaintext)
1	gcc -Wall -g -o sniffer main.c -export-dynamic `pkg-config --cflags --libs libgnomeui-2.0`

Previously I had been using ....

Code: (Plaintext)
1	gcc -Wall -g -o sniffer main.c -export-dynamic `pkg-config --cflags --libs gtk+-2.0`

It seems that there may be two conflated issues...

(1) glade-3 / gtk-builder-convert generates a GnomeAppBar class name which appears to be invalid.

(2) gtk_builder_add_from_file() seems to fail without generating any errors when improperly linked.

Does anyone think either of these should be considered glade-3 bugs?