get-page-setup-from-user in Dialogs

• (get-page-setup-from-user message parent init-setup style) -> ps-setup% object or #f
   message = #f : string or #f
   parent = #f : frame% or dialog% object or #f
   init-setup = #f : ps-setup% object or #f
   style = null : an empty list of symbols

  Like get-ps-setup-from-user, but the dialog configures page layout for native printing with printer-dc%. A dialog is shown only if can-get-page-setup-from-user? returns #t, otherwise no dialog is shown and the result is #f.

  The parent argument is used as the parent window for a dialog if it is specified. The message string might be displayed as a prompt in the dialog. If init-setup is provided, the dialog is initialized to the given configuration, otherwise the current configuration from current-ps-setup is used.

  The style argument is provided for future extensions. Currently, style must be the empty list.

  The result is #f if the user cancels the dialog, a ps-setup% object that encapsulates the selected configuration otherwise.