把二进制文件读进内存流这样写对吗？

Question

fileread(FdataTwoHandle,intLen,4);
ExpressWord:=TMemoryStream.Create;
fileread(FdataTwoHandle,ExpressWord.memory^,intLen);我这样写反正读不出来东西。

Answer 1

var
  iFileHandle: Integer;
  iFileLength: Integer;
  iBytesRead: Integer;
  Buffer: PChar;
  i: Integer
begin
  if OpenDialog1.Execute then
  begin
    try
      iFileHandle := FileOpen(OpenDialog1.FileName, fmOpenRead);
      iFileLength := FileSeek(iFileHandle,0,2);
      FileSeek(iFileHandle,0,0);
      Buffer := PChar(AllocMem(iFileLength + 1));
      iBytesRead = FileRead(iFileHandle, Buffer, iFileLength);
      FileClose(iFileHandle);      for i := 0 to iBytesRead-1 do
      begin
        StringGrid1.RowCount := StringGrid1.RowCount + 1;
        StringGrid1.Cells[1,i+1] := Buffer[i];
        StringGrid1.Cells[2,i+1] := IntToStr(Integer(Buffer[i]));
      end;
    finally
      FreeMem(Buffer);
    end;
  end;
end;查看帮助吧。里面很详细的。