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Every network driver provides a set of network capabilities, such as
connecting to devices and managing print jobs. To help Windows determine
what capabilities the driver supports, the driver exports the WNetGetCaps
function. Windows calls WNetGetCaps with an index specifying a given
function category, and WNetGetCaps returns a bit mask specifying which
network functions the driver supports for that given category. WNetGetCaps
also returns other information about the driver, such as its version
number.
 
 
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