char to TCHAR

使用
mbstowcs

Run-Time Library Reference

mbstowcs, _mbstowcs_l

Converts a sequence of multibyte characters to a corresponding sequence of wide characters.

size_t mbstowcs(
 wchar_t *wcstr,
 const char *mbstr,
 size_t count
);

功勞歸給我第一個reference的人

Reference:
http://blog.bs2.to/post/icq/9921
http://msdn2.microsoft.com/en-us/library/k1f9b8cy(VS.80).aspx

Update::

看來這個也行
MultiByteToWideChar