RE: perl passing variables to ole automation objects

[MacDonald, Ed, CON, OASD(HA)/TMA]

Jan,

> You got a VT_BSTR VARIANT alright, but to translate it to a char*, you
> need to convert wide characters to multibyte characters, which
> VariantChangeType() won't do for you.  Alternatively you can 
> use the wide
> character API to write the string directly, using the BSTR value as a
> wchar_t pointer.

Thanks for clearing things up

You've pinpointed the root of my problem. Right before I read your message,
I had just finished looking up the documentation on msdn (the book I'm using
doesn't fully document it) for VariantChangeType() and discovered that the
error message I was getting (Type mismatch) is because of what you describe
(no conversion from BSTR to char* via VariantChangeType).

> The "automatic" translations between Perl values and VARIANTs is
> documented in the Win32::OLE::Variant module documentation.

I will definitely read through that. I think that's what I was trying to ask
for in the first place, I just didn't know how to phrase it (thanks for
reading my mind :-)

> You may want to look a little into the Win32::OLE sources to 
> pick up some
> techniques.  But be warned: the soure code is big!

I won't be ready to take that step for at least another two weeks! ;-)

Thanks,
Ed

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