Sets whether there is a selection to print.
Application has to set number of pages to which the selection will draw by [method@Gtk.PrintOperation.set_n_pages] in a handler for the [signal@Gtk.PrintOperation::begin-print] signal.
%TRUE indicates that a selection exists
See Implementation
Sets whether there is a selection to print.
Application has to set number of pages to which the selection will draw by [method@Gtk.PrintOperation.set_n_pages] in a handler for the [signal@Gtk.PrintOperation::begin-print] signal.