gtk/print.go
func (po *PrintOperation) SetExportFilename(name string) {
	cstr := C.CString(name)
	defer C.free(unsafe.Pointer(cstr))
	C.gtk_print_operation_set_export_filename(po.native(), (*C.gchar)(cstr))
}
func (po *PrintOperation) SetExportFilename(name string) {
	cstr := C.CString(name)
	defer C.free(unsafe.Pointer(cstr))
	C.gtk_print_operation_set_export_filename(po.native(), (*C.gchar)(cstr))
}
// SetExportFilename() is a wrapper around gtk_print_operation_set_export_filename().