程序集能够访问打印机信息和可用性。程序集可以不使用“打印”对话框，而以编程方式打印到默认打印机。对于非默认打印机，只允许执行一项打印作业，并且必须使用“打印”对话框。

Assemblies have access to printer information and availability. Assemblies can print programmatically, without the Print dialog box, to the default printer. For non-default printers, only one print job is allowed and the Print dialog box must be used.