>I need to create a class with specific methods in the header of a grid. I can't figure out how do this. I can subclass the grid ok but then I don't have access to the header methods. Any tips?

You can define the clas like this:

define class MyHeader as header
	name = 'MyHeader'
	procedure Click
		wait window 'You clicked the header!'
	endproc
enddefine

And the programatically add this class to your columns after removing the standarad header.

By the way, for a very cool way of putting method in grid controls without using lots of these DEFINE CLASSes check out Thread#377841