Hi!

Make a header class and replace the default header by your own header class with custom code in the Click. For example:

DEFINE CLASS MyHeader as Header
  PROCEDURE Click
    this.parent.parent.OnHeaderClick(this)
  ENDPROC
ENDDEFINE

Than add OnHeaderClick method to the grid class, so you will be able to catch header clicks there.
Finally, when customizing your grid in run-time:

...
set procedure to MyHeaderDefinitionPRG ADDITIVE
for i=1 to this.ColumnCount
 this.Columns(i).AddObject('Header2','MyHeader')
 ...
endfor
...

HTH.

>I am creating a form with a grid and I need to set all the properties of the grid on the fly.
>It is easy to change the caption property:
>ThisForm.Grid1.column1.header1.caption = "Name"
>
>But how do I change the Click Event?
>
>Thanks
>Einar