[gtkada] tasking problem and toplevel window

[hsossoug.presta at canal-plus.fr]

Hello,

I have some problem with tasking.
I have created a task to listen an udp port and i want to put the result
in a gtk_clist and a gtk_ctree.
i'm using the gtk_threads.enter and leave as explain in the user guide.
But randomly the application scratch with the message : gdk-error **:
file gdkgc-win32.c : line 875 (gdk_gc_predraw):assertion failed:
(data-xgc == null) aborting ... abnormal program termination .

i haven't this source file. I use the freeze/thaw procedure : this error
happened less often but still occurred.

I have another question : when i put a new row in a ctree or clist the
toplevel window comes in the first plan. How to disable this ?