How to change page size and orientation for printing RichView
TRVPrint uses global printer settings of application.
These settings can be modified by standard Delphi/C++Builder components: TPrintDialog, TPrinterSetupDialog (located on Dialogs page of the Component Palette).
You can change them from code using the global Printer object (unit Printers). For example, you can choose printer using Printer.PrinterIndex, or change page orientation using Printer.Orientation.
Changes will be in effect after calling TRVPrint.FormatPages method.