Actually, I made the distinction between the 'int e' and the 'unsigned 
e' consciously. When using 'errno', using an 'int' is correct. When 
using GetLastError(), I would have used a win32 DWORD if there was a 
format sequence that correctly and portably formats it, so I 
chose 'unsigned' as one that IMHO most likely matches it. That is also 
the reason for the two different error messages, otherwise I don't 
think it makes a big difference.