What's the Right way to inherit GtkPlug when providing a constructor?
I'm getting an assertion failure when I create my derived object with
g_object_new:
(process:29266): GLib-GObject-WARNING **: invalid (NULL) pointer
instance
GLib-GObject-CRITICAL **: g_signal_connect_data: assertion
`G_TYPE_CHECK_INSTANCE (instance)' failed
The stack trace leading up to this looks like this:
#0 0x000000341d832215 in raise (sig=<value optimized out>) at
../nptl/sysdeps/unix/sysv/linux/raise.c:64
#1 0x000000341d833d83 in abort () at abort.c:88
#2 0x0000000000f4521b in IA__g_logv (log_domain=0xaefedc
"GLib-GObject", log_level=G_LOG_LEVEL_CRITICAL, format=0xf975e7 "%s: assertion
`%s' failed", args1=0x7fff19380960) at gmessages.c:497
#3 0x0000000000f452b3 in IA__g_log (log_domain=0x356b <Address 0x356b
out of bounds>, log_level=13675, format=0x6 <Address 0x6 out of bounds>) at
gmessages.c:517
#4 0x0000000000add124 in IA__g_signal_connect_data (instance=0x0,
detailed_signal=0x342600696d "composited_changed", c_handler=0x3425f0970c
<gtk_window_on_composited_changed>, data=0x258d0b0, destroy_data=0,
connect_flags=0) at gsignal.c:1637
#5 0x0000003425efed59 in gtk_window_init (window=Could not find the
frame base for "gtk_window_init".
) at gtkwindow.c:903
#6 0x0000000000aea0a1 in IA__g_type_create_instance (type=<value
optimized out>) at gtype.c:1567
#7 0x0000000000acfa2b in g_object_constructor (type=13675,
n_construct_properties=13675, construct_params=0x6) at gobject.c:1046
#8 0x0000000000418b23 in vrml_control_constructor (type=39300624,
n_construct_properties=3, construct_properties=0x258ab90) at
.././../src/openvrml-xembed/control.cpp:43
#9 0x0000000000ad0063 in IA__g_object_newv (object_type=39300624,
n_parameters=<value optimized out>, parameters=0x258abb0) at gobject.c:937
#10 0x0000000000ad0bb7 in IA__g_object_new_valist
(object_type=39300624, first_property_name=0x0, var_args=0x7fff19380fa0) at
gobject.c:986
#11 0x0000000000ad0cfc in IA__g_object_new (object_type=39300624,
first_property_name=0x0) at gobject.c:795
My constructor looks like this:
GObject *
vrml_control_constructor(GType type,
guint n_construct_properties,
GObjectConstructParam * construct_properties)
{
GObject * obj;
{
// Invoke parent constructor.
VrmlControlClass * klass =
VRML_CONTROL_CLASS(
g_type_class_peek(VRML_CONTROL_TYPE));
GObjectClass * parent_class =
G_OBJECT_CLASS(g_type_class_peek_parent(klass));
obj = parent_class->constructor(type,
n_construct_properties,
construct_properties);
gtk_plug_construct(GTK_PLUG(obj), 0);
}
return obj;
}
--
Braden McDaniel e-mail: <[EMAIL PROTECTED]>
<http://endoframe.com> Jabber: <[EMAIL PROTECTED]>
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