Comparison between Delphi and C/C ++ Data Types

Delphi	Data Type	C/C ++
Shorint	8-bit signed integer	Char
Byte	8-bit unsigned integer	Byte, unsigned short
Smallint	16-bit signed integer	Short
Word	16-bit unsigned integer	Unsigned short
Integer, longint	32-bit signed integer	Int, long
Cardinal, longword/DWORD	32-bit unsigned integer	Unsigned long
Int64	64-bit signed integer	_ Int64
Single	4-byte floating point number	Float
* Real48	6-byte floating point number
Double	8-byte floating point number	Double
* Extended	10-byte floating point number	Long double
Currency	64-bit currency type
Tdate/tdatetime	8-byte date/time
Variant, olevariant	16-Byte variable type	Variant, ^ variant, ^ olevariant
Char, ansichar	1 byte	Char
Widechar	2 bytes	Wchar
* Optional string	Short string
Ansistring/string	Long String	^ Ansistring
Widestring	Wide string	^ Widestring
Pchar, pansichar	Null end string	Char *
Pwidechar	Null-terminated wide string	Lpcwstr
Boolean, bytebool	1-byte Boolean Type	Any 1 byte
Wordbool	2-byte Boolean Type	Any 2 bytes
Bool, longbool	4-byte Boolean Type	Bool
Note: The forward compatibility type with the * prefix and the C ++ builder special type with the ^ prefix.

C/C ++	Delphi
ABC	Tabc
Accel	Taccel
Atom	Tatom
Bitmap	Tbitmap
Bitmapcoreheader	Tbitmapcoreheader
Bitmapcoreinfo	Tbitmapcoreinfo
Bitmapfileheader	Tbitmapfileheader
Bitmapinfo	Tbitmapinfo
Bitmapinfoheader	Tbitmapinfoheader
Bool	Bool
Cbt_createwnd	Tcbt_createwnd
Cbtactivatestruct	Tcbtactivatestruct
Char	Char
Char *	Pchar
Clientcreatestruct	Tclientcreatestruct
Colorref	Tcolorref
Compareitemstruct	Tcompareitemstruct
COMSTAT	Tcomstat
Createstruct	Tcreatestruct
Ctlinfo	Tctlinfo
Ctlstyle	Tctlstyle
Ctltype	Tctltype
DCB	Tdcb
Ddeaack	Tddeack
Ddeadvise	Tddeadvise
Ddedata	Tddedata
Ddepoke	Tddepoke
Debughookinfo	Tdebughookinfo
Deleteitemstruct	Tdeleteitemstruct
Devmode	Tdevmode
Double	Double
Drawitemstruct	Tdrawitemstruct
DWORD	Longint
Enumlogfont	Tenumlogfont
Eventmsg	Teventmsg
Farproc	Tfarproc
Fixed	Tfixed
Float	Single
Glyphmetrics	Tglyphmetrics
Handle	Thandle
Handletable	Thandletable
Hardwarehookstruct	Thardwarehookstruct
Helpwininfo	Thelpwininfo
Int	Integer
Kerningpair	Tkerningpair
Logbrush	Tlogbrush
Logfont	Tlogfont
Logpalette	Tlogpalette
Logpen	Tlogpen
Long	Longint
Long double	Extended
Long int	Longint
Lpstr	Pchar
Lpwstr	Pwidechar
Mat2	Tmat2
Mdicreatestruct	Tmdicreatestruct
Measureitemstruct	Tmeasureitemstruct
Menuitemtemplate	Tmenuitemtemplate
Menuitemtemplateheader	Tmenuitemtemplateheader
Metafilepict	Tmetafilepict
Metaheader	Tmetaheader
Metarecord	Tmetarecord
Minmaxinfo	Tminmaxinfo
Mousehookstruct	Tmousehookstruct
MSG	Tmsg
Multikeyhelp	Tmultikeyhelp
Nccalcsize_params	Tnccalcsize_params
Newtextmetric	Tnewtextmetric
Ofstruct	Tofstruct
Outlinetextmetric	Toutlinetextmetric
Paintstruct	Tpaintstruct
Paletteentry	Tpaletteentry
Panose	Tpanose
Pattern	Tpattern
Pointfx	Tpointfx
Pstr	Pchar
Pwstr	Pwidechar
Rasterizer_status	Trasterizer_status
Rgbquad	Trgbquad
Rgbtriple	Trgbtriple
Seginfo	Tseginfo
Short	Smallint
Short int	Smallint
Size	Tsize
Textmetric	Ttextmetric
Tpoint	Tpoint
Trect	Trect
Ttpolycurve	Tttpolycurve
Ttpolygonheader	Tpolygonheader
Uint	Word
Unsigned	Word
Unsigned char	Byte
Unsigned int	Word
Unsigned long	Longint (DWORD)
Unsigned long int	Longint
Unsigned short	Word
Unsigned short int	Word
Void *	Pointer
Windowplacement	Twindowplacement
Windowpos	Twindowpos
Wndclass	Twndclass
Word	Word