HI_Delete — removes a history from memory only.
|IP_hTASK ||historian, |
| ||char* ||retbuf, |
| ||int ||buflen, |
| ||char* ||histpattern|
- The task pointer to the Cascade Historian
optional buffer containing an error message.
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
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.
removes all memory associated with a given history, but
does not remove any files on disk. It flushes the history to disk.
This function corresponds to
the Cascade Historian delete
command and the hist_delete
dynamic library function.