FAQ List:

Q: How to print/preview grid on page in landscape orientation.

A: TPrintDBGridEh have not special properties to set page oreintation. Before call Print or Preview routines you have to set orientation of virtual printer on which you will send printing stuff.

uses ......, PrViewEh, Printers.
..............
procedure TForm1.bPreviewClick(Sender: TObject);
begin
PrinterPreview.Orientation := poLandscape;
PrintDBGridEh1.Preview;
end;