C Standard Libraries C++
int fwide(FILE* qpStream, int iMode);
This function converts the mode of the stream, "qpStream," to wide-character or byte-character usage. Passing in a positive integer argument for "iMode" sets the stream to wide-character mode, while passing in a negative integer sets the stream to byte-character mode. Passing in 0, does not change the stream's mode. The value returned is just the "iMode" that was passed in. At the present time, this function is not implemented in Visual C++.