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This function sends a SET_DESCRIPTOR request to a USB device.
USB_TRANSFER SetDescriptor( USB_HANDLE hDevice , LPTRANSFER_NOTIFY_ROUTINE lpStartAddress , LPVOID lpvNotifyParameter , DWORD dwFlags , UCHAR bType , UCHAR bIndex , WORD wLanguage , WORD wLength , LPVOID lpvBuffer );
Parameters
- hDevice
- [IN] Handle to a USB device.
- lpStartAddress
- [IN] Pointer to the address of a callback routine, which may be NULL.
- lpvNotifyParameter
- [IN] Pointer to the parameter to pass to a callback routine.
- dwFlags
- [IN] Specifies USB_NO_WAIT, or 0
- bType
- [IN] Specifies the descriptor type; one of the values USB_DEVICE_DESCRIPTOR_TYPE, USB_CONFIGURATION_DESCRIPTOR_TYPE, USB_STRING_DESCRIPTOR_TYPE, or a vendor specific value.
- bIndex
- [IN] Specifies an index within the descriptor.
- wLanguage
- [IN] Specifies the language identifier for string descriptors; 0 for others.
- wLength
- [IN] Specifies the descriptor length.
- lpvBuffer
- [IN] Specifies the buffer for descriptor data.
Return Values
A USB_TRANSFER handle indicates success. NULL indicates failure.
Remarks
This function initiates a control transfer to a USB device, which sets device descriptor information.
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, GetDescriptor, GetTransferStatus, IsTransferComplete
Last updated on Tuesday, July 13, 2004