Reports the length in bytes of an open OLE stream.
Len function
To get the length of a string or blob, use the Len function.
OLEStream objects
olestream.Length ( sizevar )
Argument |
Description |
|---|---|
olestream |
The name of an OLE stream variable that has been opened |
sizevar |
A long variable in which Length will store the size of olestream |
Integer. Returns 0 if it succeeds and one of the following negative values if an error occurs:
-1 Stream is not open
-9 Other error
If any argument’s value is null, Length returns null.
This example opens an OLE object in the file MYSTUFF.OLE and assigns it to the OLEStorage object stg_stuff. Then it opens the stream called info in stg_stuff and assigns it to the stream object olestr_info. Finally, it finds out the stream’s length and stores the value in the variable info_len.
The example does not check the function’s return values for success, but you should be sure to check the return values in your code:
boolean lb_memexists
OLEStorage stg_stuff
OLEStream olestr_info
long info_len
stg_stuff = CREATE oleStorage
stg_stuff.Open("c:\ole2\mystuff.ole")
olestr_info.Open(stg_stuff, "info", &
stgRead!, stgExclusive!)
olestr_info.Length(info_len)
