FtVspcGetInQueueBytes Function
Retrieves the number of bytes in buffer.
BOOL FtVspcGetInQueueBytes( FTVSPCHANDLE hPort, size_t* lpcbInQueue );
Parameters
hPort
[in] Port handle. Refer to FtVspcAttach.
lpcbInQueue
[out] A pointer to the variable where the number of bytes in buffer is returned.
Return Value
If the function succeeds, the return value is nonzero. Use FtVspcGetLastError to get the error code (FtVspc_ErrorCode).
Errors
ftvspcErrorFailed | 1 | The operation has not been completed. |
---|---|---|
ftvspcErrorInvalidParameter | 2 | Invalid parameter. |