getting instance - help

[Alexander Miro <amiro dba com br>]

Hi, first of all sorry about my English mistakes.

I've made a shared object (DLL) which is loaded by Mozilla Browser.
When I try to call a gtk_message_dialog_new() from this dll class instance
a SIGSEGV comes up.

I have a suspicion that there is a conflict with Mozilla GTK instance even
after a successful gtk_init_check() calling, indeed  this same code has
been successfully executed by a stand alone application (don't use GTK
functions).

Bellow is the snippet from the dll:

...
DlgSenha::DlgSenha()
{
    int argc = 0;
    char** argv = 0;

    if (gtk_init_check(&argc, &argv))
        GtkWidget* dialog = gtk_message_dialog_new (NULL,
                GTK_DIALOG_DESTROY_WITH_PARENT,
                GTK_MESSAGE_ERROR,
                GTK_BUTTONS_CLOSE,
                "Dummy message for test");
        gtk_dialog_run (GTK_DIALOG (dialog));
        gtk_widget_destroy (dialog);
        gtk_main();
    }
}


And this the error:

GLib-GObject-CRITICAL **: gtype.c:2240: initialization assertion failed,
use g_type_init() prior to this function

GLib-GObject-CRITICAL **: gtype.c:2240: initialization assertion failed,
use g_type_init() prior to this function

GLib-GObject-CRITICAL **: gtype.c:2240: initialization assertion failed,
use g_type_init() prior to this function

GLib-GObject-CRITICAL **: gtype.c:2240: initialization assertion failed,
use g_type_init() prior to this function

GLib-GObject-CRITICAL **: g_type_add_interface_static: assertion
`G_TYPE_IS_INSTANTIATABLE (instance_type)' failed

GLib-GObject-CRITICAL **: gtype.c:2240: initialization assertion failed,
use g_type_init() prior to this function

GLib-GObject-CRITICAL **: gtype.c:2240: initialization assertion failed,
use g_type_init() prior to this function

GLib-GObject-CRITICAL **: gtype.c:2240: initialization assertion failed,
use g_type_init() prior to this function

GLib-GObject-CRITICAL **: gtype.c:2240: initialization assertion failed,
use g_type_init() prior to this function

GLib-GObject-CRITICAL **: gtype.c:2240: initialization assertion failed,
use g_type_init() prior to this function

GLib-GObject-CRITICAL **: g_object_new: assertion `G_TYPE_IS_OBJECT
(object_type)' failed

Program received signal SIGSEGV, Segmentation fault.
0xb76e4df1 in gtk_message_dialog_new () from
/opt/gnome/lib/libgtk-x11-2.0.so.0



BACKTRACE :
(gdb) bt
#0  0xb76e4df1 in gtk_message_dialog_new () from
/opt/gnome/lib/libgtk-x11-2.0.so.0
#1  0xb7f86c04 in DlgSenha (this=0xb6b78834, rTitulo= 0xb6b78854,
rSenha= 0xb6b78838, senhaLen= 0xb6b78850, resumoCertif= 0xb2a06400,
conteudoCertif= 0xb2a06404) at DlgSenha.cpp:365
#2  0xb7fa5319 in P11PrivateKey::MostrarDlgCapturaSenhaP8
(this=0xb2a063c8, uiTentativas= 0xb6b78a74) at P11PrivateKey.cpp:186
#3  0xb7fa5819 in P11PrivateKey::ValidarSenha (this=0xb2a063c8) at
P11PrivateKey.cpp:134
#4  0xb7fb167b in P11Token::Sign (this=0xb7fd1780,
tipoMecanismo= 0xb2a3d900, hObj= 0xb2a3d904, pData=0xb6b78da0 "o\032
#5  0xb7fa8019 in P11Session::Sign (this=0xb2a3d8f4, pData=0xb6b78da0 "o\032
#6  0xb7f9b3c9 in P11Ctrl::C_Sign (this=0xb7fd15e0,
hSession= 0xb6b78ca0, pData=0xb6b78da0 "o\032
#7  0xb7f88069 in C_Sign (hSession=2, pData=0xb6b78da0 "o\032
#8  0xb2ce65c7 in PK11_Sign (key=0x85bfda0, sig=0xb6b78dd0,
hash=0xb6b78d40) at pk11obj.c:765
#9  0xb2c13336 in ssl3_SignHashes (hash=0xb6b78da0, key=0x85bfda0,
buf=0xb6b78dd0, isTLS=1) at ssl3con.c:823
#10 0xb2c1ac18 in ssl3_SendCertificateVerify (ss=0xb2a0da10) at
ssl3con.c:4365
#11 0xb2c1c6fc in ssl3_HandleServerHelloDone (ss=0xb2a0da10) at
ssl3con.c:5220
#12 0xb2c21633 in ssl3_HandleHandshakeMessage (ss=0xb2a0da10, b=0xb2a14fbc "
#13 0xb2c218f9 in ssl3_HandleHandshake (ss=0xb2a0da10,
origBuf=0xb2a0dc6c) at ssl3con.c:7791
#14 0xb2c221cc in ssl3_HandleRecord (ss=0xb2a0da10, cText=0xb6b78fb0,
databuf=0xb2a0dc6c) at ssl3con.c:8054
#15 0xb2c233bb in ssl3_GatherCompleteHandshake (ss=0xb2a0da10, flags=0)
at ssl3gthr.c:206
#16 0xb2c25d67 in ssl_GatherRecord1stHandshake (ss=0xb2a0da10) at
sslcon.c:1258
#17 0xb2c2d561 in ssl_Do1stHandshake (ss=0xb2a0da10) at sslsecur.c:149
#18 0xb2c2f47e in ssl_SecureSend (ss=0xb2a0da10, buf=0xb2a0d210 "GET /
HTTP/1.1\r\nHost: localhost:8443\r\nUser-Agent: Mozilla/5.0 (X11; U;
Linux i686; en-US; rv:1.7.13) Gecko/20060417\r\nAccept:
text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q"...,
len=381, flags=0) at sslsecur.c:1090
#19 0xb2c2f5e8 in ssl_SecureWrite (ss=0xb2a0da10, buf=0xb2a0d210 "GET /
HTTP/1.1\r\nHost: localhost:8443\r\nUser-Agent: Mozilla/5.0 (X11; U;
Linux i686; en-US; rv:1.7.13) Gecko/20060417\r\nAccept:
text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q"...,
len=381) at sslsecur.c:1128
#20 0xb2c352b0 in ssl_Write (fd=0xb47e87f0, buf=0xb2a0d210, len=381) at
sslsock.c:1454
#21 0xb2bcc0d3 in strcpy () from
/home/atm/bin/mozilla/components/libpipnss.so
#22 0xb47e87f0 in ?? ()
#23 0xb2a0d210 in ?? ()
#24 0x0000017d in ?? ()
#25 0x00000005 in ?? ()
#26 0xb7e7e78c in __pthread_mutex_unlock_usercnt () from
/lib/libpthread.so.0
#27 0xb7ec13d1 in PR_Write (fd=0xb47e65c8, buf=0xb2a0d210, amount=381)
at ../../../../../nsprpub/pr/src/io/priometh.c:146
#28 0xb6ba7724 in NSGetModule () from
/home/atm/bin/mozilla/components/libnecko.so
#29 0xb6c07572 in NSGetModule () from
/home/atm/bin/mozilla/components/libnecko.so
#30 0xb6c124cb in NSGetModule () from
/home/atm/bin/mozilla/components/libnecko.so
#31 0xb6d8e46d in nsStringInputStream::ReadSegments () from
/home/atm/bin/mozilla/libxpcom.so
#32 0xb6c12558 in NSGetModule () from
/home/atm/bin/mozilla/components/libnecko.so
#33 0xb6c0777f in NSGetModule () from
/home/atm/bin/mozilla/components/libnecko.so
#34 0xb6c080c8 in NSGetModule () from
/home/atm/bin/mozilla/components/libnecko.so
#35 0xb6ba7446 in NSGetModule () from
/home/atm/bin/mozilla/components/libnecko.so
#36 0xb6ba9d73 in NSGetModule () from
/home/atm/bin/mozilla/components/libnecko.so
#37 0xb6babf6a in NSGetModule () from
/home/atm/bin/mozilla/components/libnecko.so
#38 0xb6da690b in nsThread::Main () from /home/atm/bin/mozilla/libxpcom.so
#39 0xb7ee40e6 in _pt_root (arg=0x81962c8) at
../../../../../nsprpub/pr/src/pthreads/ptthread.c:220
#40 0xb7e7b112 in start_thread () from /lib/libpthread.so.0
#41 0xb7af42ee in clone () from /lib/libc.so.6


Any ideas?
Is it possible to get the top level window instance such as Mozilla from
a dll ?

Thanks in advance

Alex Miro
alexander miro gmail com
Rio de Janeiro - Brazil



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