It does use both the Win32 API and WinRT (which also wants wide strings) directly. It appears to use narrow strings on Linux. The "unsignedchar" appears to be

It does use both the Win32 API and WinRT (which also wants wide strings) directly. It appears to use narrow strings on Linux. The "unsignedchar" appears to be a bug in the syntax highlighter. It was parsed as two tokens, so either it's insane enough to split tokens or it dropped the space.