Johnathan,
Could you be more specific? There are many places in the source where I use static asserts to make sure character types match. <
I am referring to the six samples provided with the source, only five of which derive a class from input_filter or output filter. Perhaps the better approach would be, in the samples, to derive from filter<input, char> or filter<output, char> instead of input_filter or output_filter. You could note in a comment that input_filter, input_wfilter, output_filter and output_wfilter are short hand for filter<input, char>, filter<input, __wchar_t>, filter<output, char> and filter<output, __wchar_t>, respectively. One good sample is worth many pages of documentation. Regards, George. P.S. Sorry about the subject line but at this point I have no idea of what it should be.