I need to know the rectangle in client and/or screen terms encompassed by the entire timetable header, the entire "subheader" area including group headers (by contact or resource for example) and just the subregions of the subheader area (all group headers going across columns and all "all day" areas across columns).

I would like to eliminate and/or customize the default Planner.NET tooltips for the timetable and group headers depening on the state of my UI.

Can you guys point me to the right way to do this?  You added the GetItemBounds method for us which was very helpful.  Is there a similar method for getting these regions either individually or collectively?

Excellent control - we are making good use of it already but will probably bug you for a few more questions like this.
Thank you

That would be fantastic.  Thank you so much for the quick response

The property TooltipEventArgs.Resource references the appopriate type of resource, depending on the current group type of the calendar and the element whose tooltip is being displayed. Thus, if you are in a GroupByContact view and the TooltipEventArgs.Resource is not null for the element CalendarElement.TimetableColumnHeader, you can safely assume that TooltipEventArgs.Resource is a reference to a Contact and cast it accordingly. Something like this:

if (e.Resource != null)
  e.Tooltip = (e.Resource as Contact).FirstName; 

As for the header click behavior, there is currently no way to prevent selecting all cells in the corresponding day. We would add means to control this in future releases.

Meppy