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LPGET_STATUS (Windows CE 5.0)

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This function sends a GET_STATUS request to a universal serial bus (USB) device.

typedef USB_TRANSFER (* LPGET_STATUS)(  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 of type LPTRANSFER_NOTIFY_ROUTINE, which might be NULL.
  • lpvNotifyParameter
    [in] Pointer to the parameter to pass to a callback routine.
  • dwFlags
    [in] Value of USB_NO_WAIT or zero (0), and one of the values from the following table.
    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] Value of zero (0) for DEVICE, or interface or endpoint number.
  • lpwStatus
    [out] 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

OS Versions: Windows CE 2.10 and later.
Header: Usbdi.h.

See Also

LPTRANSFER_NOTIFY_ROUTINE

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