GetStatus

This function sends a GET_STATUS request to a USB device.

USB_TRANSFER GetStatus(
USB_HANDLE hDevice, 
LPTRANSFER_NOTIFY_ROUTINE lpStartAddress,
LPVOID lpvNotifyParameter, 
DWORD dwFlags,
UCHAR bIndex,
LPWORD lpwStatus );

Parameters

  • hDevice
    [IN] Handle to a USB device.

  • lpStartAddress
    [IN] Pointer to a callback routine, which may be NULL.

  • lpvNotifyParameter
    [IN] Pointer to the parameter to pass to a callback routine.

  • dwFlags
    [IN] Specify USB_NO_WAIT or 0, plus one of the following:

    Value Description
    USB_SEND_TO_DEVICE Request for status of the device.
    USB_SEND_TO_INTERFACE Request for status of the interface.
    USB_SEND_TO_ENDPOINT Request for status of the endpoint.
  • bIndex
    [IN] Specifies 0 for DEVICE, or interface or endpoint number.

  • lpwStatus
    [OUT] Filled in with the device's status.

Return Values

A USB_TRANSFER handle indicates success. NULL indicates failure.

Remarks

This function initiates a control transfer to a USB device requesting device, interface, or endpoint status.

Requirements

Runs on Versions Defined in Include Link to
Windows CE OS 2.10 and later      

Note   This API is part of the complete Windows CE OS package as provided by Microsoft. The functionality of a particular platform is determined by the original equipment manufacturer (OEM) and some devices may not support this API.

See Also

AbortTransfer, GetStatus, GetTransferStatus, IsTransferComplete

 Last updated on Tuesday, July 13, 2004

© 1992-2000 Microsoft Corporation. All rights reserved.