[DllImport("shlwapi.dll", EntryPoint = "PathBuildRootW",  SetLastError = True, CharSet = CharSet.Unicode)]

static extern string PathBuildRoot([MarshalAs(UnmanagedType.LPTStr)]szRoot As System.Text.StringBuilder,

<DllImport("shlwapi.dll", EntryPoint:="PathBuildRootW",  SetLastError:=True, CharSet:=CharSet.Unicode)> _

Public Function PathBuildRoot(<MarshalAs(UnmanagedType.LPTStr)>szRoot As System.Text.StringBuilder, _

Public Declare Function PathBuildRoot Lib "shlwapi" Alias "PathBuildRootA" _