I have an ASPxGridView on my page which has a few columns of data. Basically what I want to do is to add a tooltip (which I have as a user control) to each of the column headers. I don't think that it is possible to do this in the markup as I don't want to loose any of the functionality already in the grid headers (e.g. filter, etc) so what I need to do is loop through the header cells somehow to add the control in dynamically.
I have tried using the OnHtmlRowPrepared event but this does not fire for headers!
I want to achieve something like the following so the tooltip will show on hover (the tooltip is already implemented).

Any ideas?