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
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