مرجع توابع دلفی

[دلفــي]

تابع Round به بالا :

Function RoundUp(Num : Real) :Real;

begin

SetRoundMode(rmUp);

RoundUp := RoundTo(Num,0);

end;

تابع Round به پايين :

Function RoundDown(Num : Real) :Real;

begin

SetRoundMode(rmDown);

RoundDown := RoundTo(Num,0);

end;

[دلفــي]

 

Function Sum(x,y:String):String;

//    Programer: Alireza Talebi

var

S,S2,xi,yi:String;

Max:Integer;

i,n,Temp,x1,y1:integer;

begin

xi:='';

yi:='';

if StrLen(PChar(Trim(x))) >= StrLen(PChar(Trim(y))) then

begin

Max := StrLen(PChar(Trim(x)));

for i := 1 to Max - StrLen(PChar(Trim(y))) do

yi := yi + '0';

end  else

begin

Max := StrLen(PChar(Trim(y)));

for i := 1 to Max - StrLen(PChar(Trim(x))) do

xi := xi + '0';

end;

xi := Trim(xi + x);

yi := Trim(yi + y);

S := '';

n := 0;

     for i:= Max downto 1 do

     begin

     Temp:=0;

     x1 := StrToInt(xi[i]);

     y1 := StrToInt(yi[i]);

     Temp:=x1+y1+n;

     if Temp < 10 then begin

     S := S + IntToStr(Temp);

     n := 0;

     end

     else

     begin

     S := S + IntToStr(Temp mod 10);

     n := 1;

     end;

     end;

     S2 := '';

     for i:= StrLen(PChar(Trim(S))) downto 1 do

     S2 := S2 + S[i];

     Sum := S2;

end;

 

[دلفــي]

function GetIdeSerialNumber(i:Integer) : String;

const IDENTIFY_BUFFER_SIZE = 512;

type

  TIDERegs = packed record

    bFeaturesReg     : BYTE; // Used for specifying SMART "commands".

    bSectorCountReg  : BYTE; // IDE sector count register

    bSectorNumberReg : BYTE; // IDE sector number register

    bCylLowReg       : BYTE; // IDE low order cylinder value

    bCylHighReg      : BYTE; // IDE high order cylinder value

    bDriveHeadReg    : BYTE; // IDE drive/head register

    bCommandReg      : BYTE; // Actual IDE command.

    bReserved        : BYTE; // reserved for future use.  Must be zero.

  end;

  TSendCmdInParams = packed record

    // Buffer size in bytes

    cBufferSize  : DWORD;

    // Structure with drive register values.

    irDriveRegs  : TIDERegs;

    // Physical drive number to send command to (0,1,2,3).

    bDriveNumber : BYTE;

    bReserved    : Array[0..2] of Byte;

    dwReserved   : Array[0..3] of DWORD;

    bBuffer      : Array[0..0] of Byte;  // Input buffer.

  end;

  TIdSector = packed record

    wGenConfig                 : Word;

    wNumCyls                   : Word;

    wReserved                  : Word;

    wNumHeads                  : Word;

    wBytesPerTrack             : Word;

    wBytesPerSector            : Word;

    wSectorsPerTrack           : Word;

    wVendorUnique              : Array[0..2] of Word;

    sSerialNumber              : Array[0..19] of CHAR;

    wBufferType                : Word;

    wBufferSize                : Word;

    wECCSize                   : Word;

    sFirmwareRev               : Array[0..7] of Char;

    sModelNumber               : Array[0..39] of Char;

    wMoreVendorUnique          : Word;

    wDoubleWordIO              : Word;

    wCapabilities              : Word;

    wReserved1                 : Word;

    wPIOTiming                 : Word;

    wDMATiming                 : Word;

    wBS                        : Word;

    wNumCurrentCyls            : Word;

    wNumCurrentHeads           : Word;

    wNumCurrentSectorsPerTrack : Word;

    ulCurrentSectorCapacity    : DWORD;

    wMultSectorStuff           : Word;

    ulTotalAddressableSectors  : DWORD;

    wSingleWordDMA             : Word;

    wMultiWordDMA              : Word;

    bReserved                  : Array[0..127] of BYTE;

  end;

  PIdSector = ^TIdSector;

  TDriverStatus = packed record

    // Error code from driver, or 0 if no error.

    bDriverError : Byte;

    // Contents of IDE Error register. Only valid when bDriverError is SMART_IDE_ERROR.

    bIDEStatus   : Byte;

    bReserved    : Array[0..1] of Byte;

    dwReserved   : Array[0..1] of DWORD;

  end;

  TSendCmdOutParams = packed record

    // Size of bBuffer in bytes

    cBufferSize  : DWORD;

    // Driver status structure.

    DriverStatus : TDriverStatus;

    // Buffer of arbitrary length in which to store the data read from the drive.

    bBuffer      : Array[0..0] of BYTE;

  end;

var hDevice : THandle;

    cbBytesReturned : DWORD;

    SCIP : TSendCmdInParams;

    aIdOutCmd : Array [0..(SizeOf(TSendCmdOutParams)+IDENTIFY_BUFFER_SIZE-1)-1] of Byte;

    IdOutCmd  : TSendCmdOutParams absolute aIdOutCmd;

  procedure ChangeByteOrder( var Data; Size : Integer );

  var ptr : PChar;

      i : Integer;

      c : Char;

  begin

    ptr := @Data;

    for i := 0 to (Size shr 1)-1 do

    begin

      c := ptr^;

      ptr^ := (ptr+1)^;

      (ptr+1)^ := c;

      Inc(ptr,2);

    end;

  end;

begin

  Result := ''; // return empty string on error

  if SysUtils.Win32Platform=VER_PLATFORM_WIN32_NT then // Windows NT, Windows 2000

    begin

      // warning! change name for other drives: ex.: second drive '\\.\PhysicalDrive1\'

      hDevice := CreateFile( '\\.\PhysicalDrive0', GENERIC_READ or GENERIC_WRITE,

        FILE_SHARE_READ or FILE_SHARE_WRITE, nil, OPEN_EXISTING, 0, 0 );

    end

  else // Version Windows 95 OSR2, Windows 98

    hDevice := CreateFile( '\\.\SMARTVSD', 0, 0, nil, CREATE_NEW, 0, 0 );

  if hDevice=INVALID_HANDLE_VALUE then Exit;

  try

    FillChar(SCIP,SizeOf(TSendCmdInParams)-1,#0);

    FillChar(aIdOutCmd,SizeOf(aIdOutCmd),#0);

    cbBytesReturned := 0;

    // Set up data structures for IDENTIFY command.

    with SCIP do

    begin

      cBufferSize  := IDENTIFY_BUFFER_SIZE;

//      bDriveNumber := 0;

      with irDriveRegs do

      begin

        bSectorCountReg  := 1;

        bSectorNumberReg := 1;

//      if Win32Platform=VER_PLATFORM_WIN32_NT then bDriveHeadReg := $A0

//      else bDriveHeadReg := $A0 or ((bDriveNum and 1) shl 4);

        bDriveHeadReg    := $A0;

        bCommandReg      := $EC;

      end;

    end;

    if not DeviceIoControl( hDevice, $0007c088, @SCIP, SizeOf(TSendCmdInParams)-1,

      @aIdOutCmd, SizeOf(aIdOutCmd), cbBytesReturned, nil ) then Exit;

  finally

    CloseHandle(hDevice);

  end;

  with PIdSector(@IdOutCmd.bBuffer)^ do

  begin

    ChangeByteOrder( sSerialNumber, SizeOf(sSerialNumber) );

    (PChar(@sSerialNumber)+SizeOf(sSerialNumber))^ := #0;

    case i of

    0: Result := PChar(@sModelNumber);

    1: Result := PChar(@sSerialNumber);

    2: Result := PChar(@sFirmwareRev);

    end;

  end;

end;

مثال :

procedure TForm1.BitBtn1Click(Sender: TObject);

begin

Edit1.Text := Trim(GetIdeSerialNumber(0));

Edit2.Text := Trim(GetIdeSerialNumber(1));

Edit3.Text := Trim(GetIdeSerialNumber(2));

end;