这些类还可以处理输出队列和后台打印文件，回答后台打印文件的消息，执行其他打印相关任务。
These classes can also work with output queues and spooled files, answer messages for spooled files and do other print related tasks.
这些类还可以处理输出队列和后台打印文件，回答后台打印文件的消息，执行其他打印相关任务。
These classes can also work with output queues and spooled files, answer messages for spooled files and do other print related tasks.
应用推荐