Thanks,

I'll give that a shot

Sorry, we get a lot of posts and sometimes I scan through them too quickly; once I saw you mention the BeforeAppointmentToolTipDisplayed event I just went with that. The behavior has not changed since 5.3.
You can handle the MouseEnterElement event to get a notification as soon as the cursor passes within a given element, like so:

using nsDayView = Infragistics.Win.UltraWinSchedule.DayView;

this.dayView.MouseEnterElement += new UIElementEventHandler(dayView_MouseEnterElement);

void dayView_MouseEnterElement(object sender, UIElementEventArgs e)
{
    if ( e.Element is nsDayView.AppointmentUIElement )
    {
    }
}

Note that there is also a MouseLeaveElement event, which can be used to hide the tooltip.

I just wanted to mention again that we're using an older version of your library, 5.3.20053.73.  

So the behavior might be different.  Maybe a newer version would trigger the tooltip event all the time, even if the Appointment details in the box are all visible ?!?

Thanks Brian, but that wont work all the time.  

The BeforeAppointmentToolTipDisplayed event is only triggered when the tooltip is displayed.  And the tooltip is only displayed when the information listed in the appointment box on the UltraDayView is not completly visible.  If the infomration in that appointment box is totally visible, the tooltip does not show, and the event doesn't trigger.

I'd need something like a mouse enter or a mouse hover event on the appointment box element.

I noticed yesterday that the AppointmentUIElement has a OnMouseEnter event, could it be the way to get that event triggered?  Even if it was, i wouldn't know where to start to expose that event on the appointment element

regards