D: makes the errors/warnings message box popups that are rootless
D: to popup only one at the time, instead of having lots of popups.
D: 
D: the solution is a queue for orphan messages. 
D:
T: 20020801
C: 01/08/2002: Now compiles both in qt2 and qt3
F: diff/$CVSDATE/onemodal.diff
Y: