???????????windows?????е???????????г??????????????????????????????????????????????8λ????
????- ??????????[16bit]????
??????Ч?????≥-32768??-2[-15]-1????≤32767??2[15]-1????
??????Ч?????<-32768??>32767
????????:     -32769??-32768??0??32767??32768
???????????
????- ???????????????[16bit]????
??????Ч?????≥0??≤65535??2[16]-1????
??????Ч?????<0??>65535
????????:     -1??0??65535??65536
???????????
????????????????????
??????Ч???????????????????????????????????????????????Χ????????????????????
?????磺
????100??200??300
??????100??400??300
????0+32767??32767
??????32768??1????32767
????......
??????Ч???????????????????????????????????????????????Χ???????????Ч??????
?????磺
??????1000000??100
????-32769??0
????32767??1
????-32768??1
    ......