RE: Callbacks when glade file is loaded using a dynamic library

[dfg dfg <abxccd msn com>]

I forgot to mention that I am using GTK Builder. From some googling, i found that g_module_lookup() is in 
libglade. Am I correct? Is there an equivalent function for GTK Builder?
 
> Date: Thu, 22 Apr 2010 22:08:44 -0400
> Subject: Re: Callbacks when glade file is loaded using a dynamic library
> From: tvb gnome org
> To: abxccd msn com
> CC: gtk-app-devel-list gnome org
>
> If you have symbols that need to be visible in 'myapp', they need to be
> exported to in order to by found by a g_module_lookup(); did you also
> export the symbols of you app ?
>
> Cheers,
> -Tristan
>
> On Thu, Apr 22, 2010 at 9:53 PM, dfg dfg <abxccd msn com> wrote:
> > Thank you Tristan.
> >
> > I actually tried the --export-dynamic flag before posting, but could not get
> > it to work. I feel that it is most likely a problem in my makefile.am (I am
> > using automake and libtool to generate the makefiles).
> >
> > Here is the make file for the compilation of the dynamic library:
> >
> > libmyplugin= /
> > libmyplugin_LTLIBRARIES=libmyplugin.la
> > libmyplugin_la_SOURCES=libmyplugin.c libmyplugincallbacks.c
> > include_HEADERS = libmyplugincallbacks.h
> > libmyplugin_la_LDFLAGS= -lc -lgcc -avoid-version @PACKAGE_LDFLAGS@
> > libmyplugin_la_LIBDADD = --export-dynamic @PACKAGE_LIBS@
> > INCLUDES = @PACKAGE_CFLAGS@
> >
> > Here is my configure.ac
> >
> > AC_PREREQ(2.59)
> > AC_INIT(myapp, 1.0)
> > PKG_CHECK_MODULES(GTK, gtk+-2.0 gmodule-2.0 gmodule-export-2.0)
> > PACKAGE_CFLAGS="-g -Wall $GTK_CFLAGS"
> > PACKAGE_LIBS="-g $GTK_LIBS -ltar"
> > PACKAGE_LDFLAGS="-Wl, --export-dynamic $GTK_LDFLAGS"
> > AC_SUBST(PACKAGE_CFLAGS)
> > AC_SUBST(PACKAGE_LIBS)
> > AC_SUBST(PACKAGE_LDFLAGS)
> > AM_PROG_LIBTOOL
> > AC_CANONICAL_SYSTEM
> > AM_INIT_AUTOMAKE()
> > AC_PROG_CC
> > AC_CONFIG_FILES(Makefile src/Makefile src/modules/Makefile
> > src/modules/libmyplugin/Makefile)
> > AC_OUTPUT
> >
> > For some reason though, callbacks in "myapp" the main app that loads in the
> > .so files work fine. Any ideas appreciated. :)
> >
> >
> >
> > > Date: Thu, 22 Apr 2010 21:37:48 -0400
> > > Subject: Re: Callbacks when glade file is loaded using a dynamic library
> > > From: tvb gnome org
> > > To: abxccd msn com
> > > CC: gtk-app-devel-list gnome org
> > >
> > > On Thu, Apr 22, 2010 at 7:21 PM, dfg dfg <abxccd msn com> wrote:
> > > > Hi everyone,
> > > >
> > > > Currently, I have built my main application using glade. This file is
> > > > then loaded by a C application.
> > > >
> > > > I then created another interface using Glade. When my main application
> > > > loads, it loads a .so library which contains code for this subsection (kind
> > > > of like a plugin).
> > > >
> > > > The .so file loads in the second glade file and attaches it into the
> > > > interface of the main application. This all works problem.
> > > >
> > > > The problem I am facing now is that gtk_builder_connect_signals
> > > > (builder, NULL); does not work.
> > > >
> > > > For my .so file, i have 3 files:
> > > >
> > > >   -libmyplugin.c
> > > >   -libmyplugincallbacks.h
> > > >   -libmyplugincallbacks.c
> > > >
> > > >
> > > > My code for the libmyplugin.c file looks like this:
> > > >
> > > >   #include <stdlib.h>
> > > >   #include <gtk/gtk.h>
> > > >   #include "libmyplugincallbacks.h"
> > > >
> > > >   #define GUI "libmyplugingui.ui"
> > > >   int startplugin(){
> > > >      extern *mainBuilder;
> > > >      GtkBuilder *subbuilder;
> > > >
> > > >      //Do things like attach the glade file into the main glade file.
> > > >      gtk_builder_connect_signals (builder, NULL);
> > > >
> > > >   }
> > > >
> > > >
> > > >
> > > > My libmyplugincallbacks.h
> > > >
> > > >   #include <gtk/gtk.h>
> > > >
> > > >   void myfunc (GtkCellRenderer *cell, GtkCellEditable *editable, const
> > > > gchar *path, gpointer data);
> > > >
> > > >
> > > >
> > > > My libplugincallbacks.c
> > > >
> > > >   #ifdef HAVE_CONFIG_H
> > > >   #  include <config.h>
> > > >   #endif
> > > >
> > > >   #include "libmyplugincallbacks.h"
> > > >   #include <string.h>
> > > >
> > > >   void myfunc(GtkCellRenderer *cell, GtkCellEditable *editable, const
> > > > gchar *path, gpointer data){
> > > >     if (GTK_IS_ENTRY (editable))
> > > >       {
> > > >       //Do stuff
> > > >       }
> > > >   }
> > > >
> > > >
> > > >
> > > > When I compile my program, the .so file compiles properly. However, when
> > > > ever I run the program, it loads the .so file. Once GTK builder gets to the
> > > > stage where it connects the signals, it will complain that "myfunc" cannot
> > > > be found. I have double checked the name of the function in my glade file
> > > > and it is spelt and entered correctly.
> > >
> > > You generally need to export your symbols by linking the app with
> > > --export-dynamic flag:
> > >
> > > pkg-config --libs gmodule-2.0
> > >
> > > Should do the right thing to make your symbols visible.
> > >
> > > Cheers,
> > > -Tristan
> >
> > ________________________________
> > Hotmail & Messenger. Get them on your phone now.
                                          
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