举例:
{例1}var buf1,buf2: array[0..9] of AnsiChar;begin buf1 := '0123456789'; buf2 := 'abcdefghij'; Move(buf2[2], buf1[4], 5); ShowMessage(buf1); {0123cdefg9} ShowMessage(buf2); {abcdefghij}end;{例2}var buf1,buf2: array[0..9] of AnsiChar;begin buf1 := '0123456789'; buf2 := 'abcdefghij'; CopyMemory(@buf2[2], @buf1[4], 5); ShowMessage(buf1); {0123456789} ShowMessage(buf2); {ab45678hij}end;{例3}var s1,s2: TStringStream; {两个字符串流}begin s1 := TStringStream.Create; s2 := TStringStream.Create; {向第一个字符串流写入} s1.WriteString('万一的 Delphi 博客'); ShowMessage(s1.DataString); {万一的 Delphi 博客} {设置第二个字符串流的大小} s2.SetSize(6); {从第一个流复制到第二个流} CopyMemory(s2.Memory, s1.Memory, s2.Size); ShowMessage(s2.DataString); {万一的} s1.Free; s2.Free;end; 这里仅仅是为了测试, 如果真的使用 TMemoryStream、TStringStream 等流类, 它们自身提供的复制操作更方便.