Re: connector/c++ and unicode

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IMHO std::wstring has quite limited application and it is not a 'unicode' string, it is 'wide' string, it means std::wstring will use some fixed-length encoding sufficient to represent any char of some subset. If your target language(C++ in this case) does not have native unicode support in any form, then there is nothing you can do. Better strategy is to pass std::strings within your program(in any encoding of your choice) and convert them to external OS/GUI library encoding when data should be presented to a user or written to a file.
Only one drawback of this strategy is the impossibility to manipualte MBCS data via std::string interface. From this point of view std::string is a container used to pass data across program.