// 61883.h

typedef struct _CMP_GET_PLUG_HANDLE {
  IN ULONG         PlugNum;
  IN CMP_PLUG_TYPE Type;
  OUT HANDLE       hPlug;
} CMP_GET_PLUG_HANDLE, *PCMP_GET_PLUG_HANDLE;
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Windows Driver Kit DDI reference (ns-61883-_cmp_get_plug_handle)

_CMP_GET_PLUG_HANDLE structure

Description

This structure is used in getting the handle of a plug. The request retrieves a unique handle associated with an input or output plug. The plug handle is required for all operations on the plug. A driver uses a plug handle to get the state of a plug, modify plug settings, or delete a plug. A driver can delete only plugs it has previously created.

Members

`PlugNum`

The number of the plug whose handle was returned by the Av61883_CreatePlug request that created the plug.

`Type`

The type of the plug. This can be CMP_PlugOut for an output plug, or CMP_PlugIn for an input plug.

`hPlug`

On output, a handle to the plug specified with PlugNum and Type.

Remarks

If successful, the IEC-61883 protocol driver sets Irp->IoStatus.Status to STATUS_SUCCESS.

If an incorrect parameter is passed in, the protocol driver sets Irp->IoStatus.Status to STATUS_INVALID_PARAMETER.

CMP_GET_PLUG_HANDLE - NtDoc