Delphi Data Types

http://docwiki.embarcadero.com/RADStudio/XE6/en/Delphi_Data_Types

Integer Data Types

Type	Description	Pointer
Byte	8-bit unsigned integer	PByte
ShortInt	8-bit signed integer	PShortInt
Word	16-bit unsigned integer	PWord
SmallInt	16-bit signed integer	PSmallInt
Cardinal	32-bit unsigned integer	PCardinal
LongWord	32-bit unsigned integer	PLongWord
DWord	32-bit unsigned integer	PLongWord
Integer	32-bit signed integer	PInteger
LongInt	32-bit signed integer	PLongint
UInt64	64-bit unsigned integer	PUInt64
Int64	64-bit signed integer	PInt64
NativeUInt	64-bit or 32-bit platform-dependent unsigned integer	PNativeUInt
NativeInt	64-bit or 32-bit platform-dependent signed integer	PNativeInt

Floating-point Data Types

Type	Description	Pointer	Record
Single	Single precision floating-point value (4 bytes)	PSingle	TSingleRec
Double	Double precision floating-point value (8 bytes)	PDouble	TDoubleRec
Extended	Extended precision floating-point value (10 bytes on Win32, but 8 bytes on Win64)  See page about multi-device applications.	PExtended	TExtended80Rec
Real	Alias of Double	N/A	N/A

String and Character Data Types

Type	Description	Pointer
AnsiChar	ANSI character	PAnsiChar
Char	Wide character (16-bit)	PChar
WideChar	16-bit character	PWideChar
AnsiString	Represents a dynamically allocated ANSI string whose maximum length is limited only by available memory.	PAnsiString
RawByteString	Use as a "codepage-agnostic" parameter to a method or function, or as a variable type to store BLOB data.	PRawByteString
UnicodeString	Unicode string	PUnicodeString
String	Alias for UnicodeString	PString
ShortString	A string of maximum 255 characters	PShortString
WideString	A string of 16-bit characters	PWideString

File Data Types

Type	Description	Pointer
File	File descriptor
TextFile, Text	Text file descriptor

Boolean Data Types

Type	Description	Pointer
Boolean	Represents a logical value (true or false).	PBoolean
ByteBool	Represents an 8-bit logical value.
WordBool	Represents a 16-bit logical value.	PWordBool
LongBool	Represents a 32-bit logical value.	PLongBool

Other Data Types

Type	Description	Pointer
Array	Represents an indexed collection of elements of the same type.
Record	Represents a heterogeneous set of elements.
Variant	Represents values that can change type at run time.	PVariant
Pointer	Represents a pointer to data of any type.	PPointer
Currency	A fixed-point data type used to hold monetary values.	PCurrency