C#

public static short LoWord(int n)
{
	return (short)(n & 0xffff);
}

public static short HiWord(int n)
{
	return (short)((n >> 16) & 0xffff);
}

public static byte LoByte(short n)
{
	return (byte)(n & 0xff);
}

public static byte HiByte(short n)
{
	return (byte)((n >> 8) & 0xff);
}

#define LOWORD(l)           ((WORD)((DWORD_PTR)(l) & 0xffff))
#define HIWORD(l)           ((WORD)((DWORD_PTR)(l) >> 16))
#define LOBYTE(w)           ((BYTE)((DWORD_PTR)(w) & 0xff))
#define HIBYTE(w)           ((BYTE)((DWORD_PTR)(w) >> 8))

public static ushort LowWord(uint value) {
    return (ushort)(value & 0xFFFF);
}
public static ushort HighWord(uint value) {
    return (ushort)(value >> 16);
}
public static byte LowByte(ushort value) {
    return (byte)(value & 0xFF);
}
public static byte HighByte(ushort value) {
    return (byte)(value >> 8);
}

using ( OleDbConnection conn = new OleDbConnection() )
{
   conn.ConnectionString = 
      @"Provider=Microsoft.Jet.OLEDB.4.0;" +
      @"User ID=Admin;" +
      @"Data Source=FPNWIND.MDB;" +
      @"Mode=Read|Share Deny Read|Share Deny Write";
 
   using ( OleDbCommand cmd = new OleDbCommand() )
   {
      cmd.CommandText = 
         "SELECT CategoryName FROM Categories ORDER BY CategoryID";
      cmd.Connection = conn;
 
      conn.Open();
 
      OleDbDataReader rdr = cmd.ExecuteReader();
 
      try
      {
         while ( rdr.Read() )
         {
            System.Console.WriteLine( 
               "Category: {0}",
               rdr.GetString( 0 ) );
         }
      }
      finally
      {
         rdr.Close();
      }
   }
}