StrLenW (FUN)

FUNCTION StrLenW : DINT

This function determines the length of a string by searching for a terminating zero character. The function will do its work either with native IEC-WStrings or with strings coming from external functions. It will return -1 if the given pointer to String is equal NULL

InOut:

Scope Name Type Comment Return StrLenW DINT Input pstData CharBufferPtr simply a pointer to byte