Hi!

Because column is non-regular objects container. In other words, it can contain any object, the same way as usual container class or just form. You cannot change number of objects inside of column by hanging some "Count" property, like ColumnCount for grid or ButtonCount for CommandGroup. As opposite, it is much easier to add new object into the column manually via AddObject compare to add new column into grid manualy by similar way.

Finally, you can include your TextBox control inside column class, and then use that column class as Memeber class for grid.

>Hi!
>
>Thanks for your answer. I've already made it through MemberClass and HeaderClass properties using a .prg class definitions. But the same old thing again: why didn't they make such property as MemberClassLibrary for a Column object? I need my own Text object class in my Grid and I have to replace the default class for each column in the Grid Init method code instead of setting my ClassLibrary in MemberClassLibrary property of Column object. It's some kind of partial functionality in my opinion.