With simple programs all is simple.

But with this case ( VFP it is full of these bugs ):

try
   If Used("MyCursor")
     * now fire a timer that close MyCursor for a application bug not catched at developer time
     * because it occurs randomly 1/10000 only when the database application have special data
     Select MyCursor
     Scan
     ....
     EndScan
   Else
     Throw "Something"
   Endif
Catch
   ....
endtry

The Open Dialog inexorably it exits!

If the program is sincronous and determinist,
then I can defend it,
otherwise it is impossible to guarantee that
the cursed window does not come seen from the customer.

The singular thing is that the time of this thread
is greater of the time necessary to a member of the VFPT
in order to resolve the problem.

Fabio