delphi 读取BIN文件

//读取文件函数 function ReadFile1(FileName:String):boolean; var sFileName: string; f: TfileStream; ED_Data: array[0..2048] of char; lRet: integer; lOffset: Longint; lOrigin: Word; i,count:integer; begin sFileName:=form1.opendialog1.FileName; f := TfileStream.Create(sFileName,fmOpenRead); try f.Seek(lOffset,lOrigin); //文件定位，从lOrigin开始移动lOffset begin lRet := f.Read(f,count); //lRet为实际读到的字节数，ED_Data为读到的内容 form1.Memo2.Lines.LoadFromStream(f); j:=f.size div 1024; //计算文件一共有多少个包 // form1.suimemo1.Text:=strtohexstr(ed_data[count]); Application.ProcessMessages; begin for i:=0 to j do begin form1.Label1.Caption:='正在读取第 '+inttostr(i)+' 包 '; form1.Memo1.Text:=form1.Memo1.Text+ midstr(strtohex(form1.Memo2.text),2048*i,2048)+' '; //Progressbar进度栏 form1.ProgressBar1.Max :=j; form1.ProgressBar1.Min:=0; form1.ProgressBar1.Position := i; Application.ProcessMessages; end; // form1.memo2.clear; showmessage('成功读取'+inttostr(i)+'个包'); Application.ProcessMessages; end; end; finally FreeAndNil(f); Application.ProcessMessages; end; end;