Hello, Wave experts, I　have been using boost wave library without much problems so far. But recently when I was trying to compile our program with UNICODE mode using VC++ 2005 Express, I got this compile error: c:\users\tools\boost\boost_1_34_0\boost\wave\util\cpp_macromap.hpp(683) : error C2001: newline in constant It complains about the following lines: argument->push_back(token_type(T_PLACEMARKER, "?, I copy more lines of the file here: #if BOOST_WAVE_SUPPORT_VARIADICS_PLACEMARKERS != 0 if (boost::wave::need_variadics(ctx.get_language())) { // store a placemarker as the argument argument->push_back(token_type(T_PLACEMARKER, "?, (*next).get_position())); ++count_arguments; } It was strange to me that without setting to UNICODE mode, I did not have this problem. Another interesting thing is that if I added the closing double quate " and changed the line as to below, the compile error went away: argument->push_back(token_type(T_PLACEMARKER, "?", But I am not sure if I am doing right thing and not sure if the wave developer really missed closing double quate. If anybody could provide an insight to this issue, it is appreciated. Best regards, Fanzhe Cui ++++++++++++++++++++++++++++++++++++++++++++++ Goldiom Systems LLC - Information and Communication Technology Provider Email: fanzhe.cui@goldiom.com Tel: 973-210-4254 www.goldiom.com