GtkEntry and Gtk2.0

[Nick Soffe <nick soffe bioch ox ac uk>]

Hi,
I'm trying to port one of my programs from Gtk1.2 to Gtk2.0 (nearly
successfully) but have encountered one problem. I have a routine which
counts mouse motion events to adjust numbers in a GtkEntry box. This
enables an user to have fine control over a parameter which can also be
entered manually. To do this I gdk_pointer_grab the entry and
gtk_signal_connect(GTK_OBJECT(entry),"event",handler,etc). My callback
traps for either GDK_MOTION_NOTIFY to update the count with gtk_set_text
or GDK_BUTTON_PRESS to exit. Under Gtk1.2 this works fine and the entry
visibly updates during adjustment. Under Gtk2.0 the entry blanks when the
first "event" occurs and won't display the updated number until the event
handler is disconnected on quitting the routine. I've tried to eliminate
as much of the related code as possible.
GtkEntry clearly works differently but I can't find any hints in the docs.
No gtk errors are produced whilst running and everything else works fine.
Any ideas/suggestions about this would be gratefully received.
Nick Soffe.