GDI Information Services

GDI provides several services a driver can use to query the system about device and system attributes, a file's time stamp, and the performance counter. These services are listed in the following table.

Function	Description
EngQueryDeviceAttribute	Allows the driver to query the system about particular attributes of the device.
EngQueryFileTimeStamp	Returns the time stamp of a file.
EngQueryLocalTime	Queries the local time.
EngQueryPerformanceCounter	Queries the performance counter.
EngQueryPerformanceFrequency	Queries the frequency of the performance counter.
EngQuerySystemAttribute	Queries processor or system-specific capabilities.