Visibility of columns in the grid

Use the TColumnEh.Visible property of the column to hide or show a column. To access the array of all columns, including hidden, use TDBGridEh.Columns property

TDBGridEh.Columns[i].Visible := …

To get a list of all visible columns, use TDBGridEh.VisibleColumns List.

var
  i: Integer;
  w: Integer;
begin
  for i := 0 to DBGridEh1.VisibleColumns.Count-1 do
    w := DBGridEh1.VisibleColumns[i].Width;
end;