GtkTestEmbed issue

If someone can help me on this, I would greatly appreciate it!!!!

The problem I m having is this:
	I m currently using the GtkTestEmbed to implement a benchmark
test for a new kind of internet web caching.  However, there is a
problem in that if the embedded browser cannot resolve the address or if
the DNS server is down, it will have a popup dialog that will notify the
user of such occurrence.  However, since this is used for benchmarking,
I would like it if such pop up dialog box doesn't exist or if there is
someway of detecting it such that I can hack around it (I am thinking of
setting up an alarm event so that if a pop dialog is suppose to come up,
it will just post an event and then retry to download from that site
when the alarm goes off).  
	can someone tell me where I can look for the code for the pop up
menus?  Or which file I should be looking for?  I would appreciate any
help!  Thanks in advance!

kevin



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