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.

FunctionDescription

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.

 

 

 

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