* Assumed the name of your desired column is "column3", you can for instance do
* something like this in yourGrid.Init():
This.Column3.NewObject('myButton', 'myClass','myLibrary.VCX/PRG') && your class, or ...
This.Column3.AddObject('myButton', 'CommandButton') && ... the base class if you want
* Then set its visibility, and make it the "current control"
This.Column3.myButton.Visible = .T.
This.Column3.CurrentControl = 'myButton'
* And optionally turn .Sparse off if you want to see the button not only in the active row
This.Column3.Sparse = .F.