Instructions

U.are.U SDK - Developer Guide 79
OPOS
Device-Related Error Codes
For the device-related result codes returned by EventNumber after the DirectIOEvent event, see EventNumber Return
Values on page 74
.
The following error codes are returned in the ResultCodeExtended property of the ErrorEvent object.
IMPORTANT: You should always use the names of the return codes, such as FT_OK, rather than the numeric values
because these values may change at any time, without notice. The numbers are provided as a reference for the error
codes in the sample application.
Value Result Code Meaning
-1 FT_ERR_NO_INIT The fingerprint feature extraction module or the fingerprint compari-
son module is not initialized.
-2 FT_ERR_INVALID_PARAM One or more parameters are not valid.
-4 FT_ERR_IO A generic I/O file error occurred.
-7 FT_ERR_NO_MEMORY There is not enough memory to perform the action.
-8 FT_ERR_INTERNAL An unknown internal error occurred.
-10 FT_ERR_UNKNOWN_DEVICE The requested device is not known.
-11 FT_ERR_INVALID_BUFFER A buffer is not valid.
-33 FT_ERR_UNKNOWN_EXCEPTION An unknown exception occurred.