Retrieves an error parameter by ordinal.
public size_t ULErrorInfoParameterAt( ul_error_info const * errinf, ul_u_short parmNo, char * buffer, size_t bufferSize )
errinf The ul_error_info object.
parmNo The 1-based parameter ordinal.
buffer The buffer to receive parameter string.
bufferSize The size of the buffer.
The size, in bytes, required to store the parameter, or zero if the ordinal isn't valid. If the return value is larger than the bufferSize value, the parameter was truncated.