Dynamic Menus (proper post)

["Ivan N. Zlatev" <contact i-nz net>]

Hi again,

My greatest apologies for posting twice, but unfortunately my experience
with mailing lists is limited and I've just found out that my attachment
is missing and
also I will provide a more detailed explanation of my problem in this
re-post.

The code/test case you can find at
http://files.i-nz.net/temp/dynamic_menus.c

My configuration:
SuSE Linux 10.0
GNOME 2.12
X Window System Version 6.8.2
gtk+ 2.8.10
glib 2.8.5
pango 1.10.2

What I am trying to do is dynamically create sub menus by handling
"select" and "deselect" signals for the menu item. Once a menu item is
selected I am creating the sub menu and once I get a deselected event I
delete the sub menu. I assume that I will always get a signal and
destroy a sub menu(for example if the user moves the pointer outside the
menu item or to another menu), which will destroy the children, etc.

I have two major problems with the code:

1) The newly created sub menu is not being shown after it is created in
the selected signal handler. It is shown only if I click
on the selected menu item.
2) If I double click on a menu item it freezes my whole screen and I
can't click on anything. I get a flood of messages containing the same
text in console:

Gtk-CRITICAL **: gtk_widget_event: assertion `WIDGET_REALIZED_FOR_EVENT
(widget, event)' failed

I managed to get a backtrace with GDB by running the program with
--g-fatal-warnings and it is:

Program received signal SIGABRT, Aborted.
0xffffe410 in __kernel_vsyscall ()
#0  0xffffe410 in __kernel_vsyscall ()
#1  0x407b6541 in raise () from /lib/tls/libc.so.6
#2  0x407b7dbb in abort () from /lib/tls/libc.so.6
#3  0x4073a1a0 in g_logv () from /opt/gnome/lib/libglib-2.0.so.0
#4  0x4073a1e5 in g_log () from /opt/gnome/lib/libglib-2.0.so.0
#5  0x4073a33c in g_return_if_fail_warning ()
from /opt/gnome/lib/libglib-2.0.so.0
#6  0x40263df4 in gtk_widget_event ()
from /opt/gnome/lib/libgtk-x11-2.0.so.0
#7  0x4016ffc5 in gtk_propagate_event ()
from /opt/gnome/lib/libgtk-x11-2.0.so.0
#8  0x4017045f in gtk_main_do_event ()
from /opt/gnome/lib/libgtk-x11-2.0.so.0
#9  0x4037ae4a in gdk_screen_get_setting ()
from /opt/gnome/lib/libgdk-x11-2.0.so.0
#10 0x407325dc in g_main_context_dispatch ()
from /opt/gnome/lib/libglib-2.0.so.0
#11 0x40732c9b in g_main_context_dispatch ()
from /opt/gnome/lib/libglib-2.0.so.0
#12 0x40733187 in g_main_loop_run ()
from /opt/gnome/lib/libglib-2.0.so.0
#13 0x4016f5d1 in gtk_main () from /opt/gnome/lib/libgtk-x11-2.0.so.0
#14 0x08049161 in main (argc=1, argv=0xbfd92174) at main.c:111

What am I doing wrong and what would be the proper way to implement what
I am trying to without experiencing the 2 problems I am having?

-- 
Ivan N. Zlatev
Web: http://www.i-nZ.net
PGP Key: http://files.i-nz.net/Ivan%20N.%20Zlatev.asc
"It's all some kind of whacked out conspiracy."