·2,447,543篇论文数据，部分数据来源于NoteExpress
得到选入当前位图的设备描述表。
Retrieves the device context into which the current bitmap is selected.
在多个标准设备请求中所提到的描述表是有一定格式的数据集。
The descriptor used in several device requests is the data set with a defined format.
设备抽象层为上层应用程序提供了一套标准的、与设备无关的通信接口，并且通过文件描述表、设备描述表和驱动描述表建立了从通信接口到设备驱动的映射。
The device Abstract Layer provides a set of standard communication interface functions unrelated with specific device, which is mapped to device drivers by file table, device table and driver table.
应用推荐