Re^3: Win32::API and pointer of dword

in reply to Re^2: Win32::API and pointer of dword
in thread Win32::API and pointer of dword

len is will never be NULL pointer. It'll never be zero. If you want the ability to pass NULL, we'll have to do more work. Which of the following is true?

Did you mean to allow NULL to be passed?
Did you forget to dereference len?
Was choosing to pass a pointer a mistake?

And then there's return ERROR; in a function of return type void...

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Re^4: Win32::API and pointer of dword by cbrauner (Novice) on Aug 18, 2009 at 15:31 UTC
found it in c-code : check is against pointer and not against the value - third party dll ;) - thx	[reply]
Re^5: Win32::API and pointer of dword by ikegami (Patriarch) on Aug 18, 2009 at 16:30 UTC
So I guess it was the following unstated option: You misunderstood the purpose of the check. It isn't checking if the length is zero. It is checking if the pointer is `NULL`, for that would be a problem. Since we'll never pass `NULL`, the check will always be false, and that's a good thing.	[reply] [d/l] [select]

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