How do you expect us to help you debug this?
Really?

Cheers,
Henry

On Sep 15, 2010, at 8:45 38PM, Schwab,Wilhelm K wrote:

> I am playing with a new library and for kicks thought I would call its 
> get-version function:
> 
> | buffer |
> buffer := String new:80.
> PLplotLibrary default cPlgver:buffer.
> buffer.
> 
> The above appears to do nothing; the buffer remains blank, and there is no 
> error raised from it.  I tried something more complicated involving external 
> address and #alloc: and got the version number.  That is encouraging from a 
> perspective of talking to the library, but then I had to square the above 
> failure with my use of memcpy() not long ago (different topic).  In that 
> case, I had real need to allocate a buffer in a fixed heap, but was told that 
> I could ultimately copy from said buffer (which lives across multiple gcs and 
> would move) into a ByteArray of the needed size, which would not move during 
> the memcpy() call.  That worked.  So I tried
> 
> | buffer |
> buffer := ByteArray new:80.
> PLplotLibrary default cPlgver:buffer.
> buffer asString.
> 
> and get the version number.  What's up?  Why is it ok to pass a byte array 
> but not a string?  If there really is a difference, there should be an 
> exception hinting that something is wrong and what it might be - right?
> 
> Bill
> 
> 
> 
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