onGotPageSize   
  open fun onGotPageSize(connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: (context: PrintContext, pageSetup: PageSetup) -> Unit): <Error class: unknown class>(source)
Emitted once for each page that gets rendered to the preview.
A handler for this signal should update the @context according to @page_setup and set up a suitable cairo context, using method@Gtk.PrintContext.set_cairo_context.
Parameters
connectFlags 
a combination of ConnectFlags
handler
the Callback to connect. Params: context the current GtkPrintContext; pageSetup the GtkPageSetup for the current page