>>>Is there a way to make mygrid class contain mytextbox class when creating a grid instead of the VFP textbox class?
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>>You can do it either visually (add object to column in class designer)
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>There are no columns in grid class to add object to.

but you can make them resetting Grid.ColumnCount

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>>or programmatically (column.addobject)
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>Could I modify the grid builder to do something like this? If so, do you know the file name and location?

I don't quite understand what you mean here.