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The following table shows the IEEE 1394 Virtual VCR driver structures with a description of the purpose of each.
| Programming element | Description |
|---|---|
| VVCR_Complete_Request | This structure identifies the request made and permits the virtual VCR driver to complete the appropriate request. |
| VVCR_Event_Request | This structure defines flags relative to the request. |
| VVCR_Event_Response | This structure is completed and returned in the lpOutbuffer of IOCTL_VVCR_EVENT. |
| VVCR_QueryState_Response | This structure contains information on the currently defined plug descriptions for the virtual VCR driver. |
| VVCR_SetMechanismPosition_Request | This structure is completed by IOCTL_VVCR_SET_MECHANISM_POSITION. |
| VVCR_SetMechanismState_Request | This structure describes the current state of the mechanism. |
| VVCR_SetMechanismTrackNumber_Request | This structure contains the current track number of the tape position. |
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