Function winapi::um::uxtheme::GetCurrentThemeName

pub unsafe extern "system" fn GetCurrentThemeName(
    pszThemeFileName: LPWSTR, 
    cchMaxNameChars: c_int, 
    pszColorBuff: LPWSTR, 
    cchMaxColorChars: c_int, 
    pszSizeBuff: LPWSTR, 
    cchMaxSizeChars: c_int
) -> HRESULT