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<TD class="tt2" bgcolor="#F5F8F8" width="84%"><center><B><FONT style="FONT-SIZE: 16.5pt" COLOR="#FF6666" FACE="楷体_GB2312">判断一个程序是否dos版本</FONT></B></center>
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<p class="tt2">将文件头读进来,判断是否Exe <br>
offset(0) -$5a45 'MZ'<br>
offset($80) = 'PE' WIN32 EXE<br>
offset($100) = 'NE' WIN16 EXE<br>
<br>
e_magic:SmallInt<br>
buffer:array[0..255] of byte;<br>
FStream:TFileStream;<br>
<br>
FStream:=TFileStream.Create(Filename,fmOpenRead+fmShareDenyNone);<br>
Try<br>
FStream.Read(buffer,256);<br>
if SmallInt(buffer[0]) <>$5A4D then<br>
FIsMSDos:=False<br>
else<br>
FIsMSDos:=True;<br>
<br>
nPos:=$80 <br>
<br>
if (buffer[nPos+0]='P') and (buffer[nPos+1]='E') and (buffer[nPos+2]=#0) and
(buffer[nPos+3]=#0) then<br>
FIsPE:=True;<br>
<br>
finally<br>
FStream.Free;<br>
<br>
nPos:=$100 <br>
if (buffer[nPos+0]='N') and (buffer[nPos+1]='E') then<br>
FIsNE:=True;</p>
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