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LPSET_DESCRIPTOR (Compact 2013)

3/26/2014

This function sends a SET_DESCRIPTOR request to a universal serial bus (USB) device. It then initiates a control transfer to a USB device, which sets device descriptor information.


typedef USB_TRANSFER (* LPSET_DESCRIPTOR)(
  USB_HANDLE hDevice,
  LPTRANSFER_NOTIFY_ROUTINE lpStartAddress,
  LPVOID lpvNotifyParameter, 
  DWORD dwFlags, 
  UCHAR bType, 
  UCHAR bIndex, 
  WORD wLanguage,
  WORD wLength,
  PVOID lpvBuffer
);

hDevice

[in] Handle to a USB device.

lpStartAddress

[in] Pointer to the address of 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).

bType

[in] Descriptor type. Set to USB_DEVICE_DESCRIPTOR_TYPE, USB_CONFIGURATION_DESCRIPTOR_TYPE, USB_STRING_DESCRIPTOR_TYPE, or a vendor specific value.

bIndex

[in] Index within the descriptor.

wLanguage

[in] Language identifier for string descriptors; zero (0) for others.

wLength

[in] Descriptor length.

lpvBuffer

[in] Buffer for descriptor data.

A USB_TRANSFER handle indicates success. NULL indicates failure.

Header

usbdi.h

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