Sets whether there is a selection to print.
Application has to set number of pages to which the selection will draw by gtk.print_operation.PrintOperation.setNPages in a callback of #GtkPrintOperation::begin-print.
true indicates that a selection exists
Sets whether there is a selection to print.
Application has to set number of pages to which the selection will draw by gtk.print_operation.PrintOperation.setNPages in a callback of #GtkPrintOperation::begin-print.