How are you sure your GUID is correct? Win32::API doesn't have any built in understanding of GUIDs. If you got your GUIDs by dropping the '-'s, you did it wrong. Also there might be a bug in your using of Encode. Encode won't put a wide null unless you explicitly have a "\x00" in the scalar that you can see. Encode WONT see the secret null that perl keeps after the end of the visible string. Win32::API uses the letter S, not P for structs. P is for a scalar string (or self packed integer "\x01\x02\x03\x04" or self packed struct). An API::Struct is a object, if you print it, you'll probably get the reference in hex. So whoever is using the the IPPI prototype is very wrong.

Post the code where you created the API object and the prototype you used. Your code isn't runnable currently.

update, I just noticed the part where you mentioned "Win32::Wlan::API", the previous 2 paragraphs were written without me realizing your using a CPAN mod. After looking at Wlan::API, I see Wlan::API never uses API::Struct. Using P instead of S is probably your error.

In reply to Re^3: Adding WlanConnect() to Win32::Wlan::API by bulk88
in thread Adding WlanConnect() to Win32::Wlan::API by tomsell

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