Macro windows::h

macro_rules! h {
    ($s:literal) => { ... };
}

A literal HSTRING, length-prefixed wide string with a trailing null terminator for use with WinRT APIs.

Converts the literal UTF-8 string into a UTF-16 string adding a terminator and then wrapping that in an HSTRING reference so that it can be used for calling both WinRT APIs expecting an HSTRING.