GetInterface

This function sends a request to a USB device for information about alternate device settings.

Syntax

USB_TRANSFER GetInterface( USB_HANDLE hDevice, LPTRANSFER_NOTIFY_ROUTINE lpStartAddress,
LPVOID lpvNotifyParameter, DWORD dwFlags, UCHAR bInterfaceNumber, PUCHAR lpbAlternateSetting );

Parameters

hDevice

[IN] Handle to a USB device.

lpStartAddress

[IN] Non-null pointer to a pointer to a callback routine.

lpvNotifyParameter

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

dwFlags

[IN] Specifies either of the values USB_NO_WAIT or 0.

bInterfaceNumber

[IN] Specifies the interface number.

lpbAlternateSetting

[OUT] Filled in with current alternate setting value.

Return Values

A USB_TRANSFER handle indicates success. NULL indicates failure.

Remarks

This function initiates a control transfer to a USB device, requesting the alternate setting selected for the specified interface.

This function is defined in the Mousedrv.cpp file.

See Also

AbortTransfer, GetTransferStatus, IsTransferComplete, SetInterface