还有LongRec(FDesignInfo).Hi
LongRec定义是这样:
LongRec = packed record
case Integer of
0: (Lo, Hi: Word);
1: (Words: array [0..1] of Word);
2: (Bytes: array [0..3] of Byte);
end;看不明白是什么意思
LongRec定义是这样:
LongRec = packed record
case Integer of
0: (Lo, Hi: Word);
1: (Words: array [0..1] of Word);
2: (Bytes: array [0..3] of Byte);
end;看不明白是什么意思
Hi,Lo即把32位分为高低两个16位来读取
LongRec可以是下面三种任何一个,只占4字节
LongRec = packed record
Lo, Hi: Word;
end; LongRec = packed record
Words:array [0..1] of Word;
end; LongRec = packed record
Bytes: array [0..3] of Byte;
end;