IP_hTASK historian, char* retbuf, int buflen, char* histpattern, int* count
The task pointer to the Cascade Historian program.
An optional buffer containing an error message.
The length in bytes of retbuf. If retbuf is non-NULL, this must be a valid non-zero length. If retbuf is NULL, this parameter is ignored.
A globbing pattern specifying a group of histories.
Return value containing the number of histories.
ST_OK on success. Otherwise ST_ERROR, and the retbuf will contain a NULL-terminated character string with an error message. If the return value is ST_OK, the retbuf may not contain useful information.
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