This function takes a session handle parameter. It gets the first part of the filter. Each part is either:
Syntax
STRING AlarmFilterEditFirst(INT hSession)
Session
Session handle for the historical list previously returned by the function AlarmFilterEditOpen().
Return Value
First part of filter or if does not exist an empty string "".
Example
iHndl = AlarmFilterEditOpen(iAN); iRet = AlarmFilterEditSet(iHndl,"Tag=Dig*;Category=1;Area=1;"); iRet = AlarmFilterEditAppend(iHndl, "Priority<20"); sRet = AlarmFilterEditFirst(iHndl); // Tag=Dig*; sRet = AlarmFilterEditNext(iHndl); // Category=1; sRet = AlarmFilterEditLast(iHndl); // Priority<20; sRet = AlarmFilterEditPrev(iHndl); // Area=1; iRet = AlarmFilterEditClose(iHndl);
Related Functions
AlarmFilterEditNext, AlarmFilterEditPrev
See Also
Published June 2018