GUI problems with 2.2.1

I'm running gtk 2.2.1 on Linux and also Tor's 2.2.1 runtime on win98.
I'm seeing a couple of things that work on Linux but don't work on
Windows.

1. At one stage my app does a big computation, and I put up the
GDK_WATCH cursor using gdk_pointer_grab().  Works fine on Linux, but
the cursor on win32 doesn't change from the default.  I put in checks
and ascertained that (a) the cursor is non-NULL and (b) the
gdk_pointer_grab returned a success.  It's just not doing anything
visible.

2. I have tooltips for some menu items (gtk_item_factory stuff).
These show OK on Linux but they don't show on win32.  When I move the
pointer over the menu items that should have tooltips I think I see a
flicker, as if perhaps a tooltip is being drawn and then removed
immediately.  Odd, since some other tooltips (e.g. on a menu bar) show
OK on Windows.

I can't swear to it, but I'm fairly sure these things were working OK
with an earlier release of the gtk win32 runtime.

Any notions of what's wrong?

-- 
Allin Cottrell
Department of Economics
Wake Forest University, NC