how to close a messagebox automatically?

["Louis Lu" <netlu visto com>]

Hi 
  
  T wrote a program that will have message box pop out
before the main window comes out.  Currently, i have to
click 'OK' to close the message box.  I just wondering
is there any bod knows how to close the message box 
automatically? (ie.turn off the message box after 
3 sec.)

I use:
messagebox = 
gnome_message_box_new(...)
gnome_dialog_run_and_close(...)

Thanks in advance.

Lu
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