Hardware Dev Center

IOCTL_UMDF_GET_PHYSICAL_DESCRIPTOR control code

The IOCTL_UMDF_GET_PHYSICAL_DESCRIPTOR control code obtains the physical descriptor of a HIDClass device.

Input Parameters

A UMDF-based driver obtains the size, in bytes, of the buffer by calling IWDFRequest::GetDeviceIoControlParameters and providing the pOutBufferSize parameter.

Output Parameters

The driver copies the physical descriptor to the user buffer that is retrieved by calling IWDFIoRequest::GetOutputMemory.

I/O Status Block

HID minidrivers that carry out the I/O to the device must also:

Requirements

Minimum UMDF version

1.11

Header

Hidport.h

See also

IOCTL_GET_PHYSICAL_DESCRIPTOR

 

 

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