Delphi to C++ types mapping

Go Up to Support for Delphi Data Types and Language Concepts

Below you can find a list of Delphi data types and the corresponding C++ data types:

Delphi type	defined in sysmac.h	Platform	Corresponding C++ type
Boolean	System::Boolean		bool
ShortInt	System::Int8		signed char
SmallInt	System::SmallInt		short
Integer	System::Integer		int
Int64	System::Int64		__int64
Byte	System::Byte		unsigned char
Word	System::Word		unsigned short
Cardinal	System::Cardinal		unsigned
UInt64	System::UInt64		unsigned __int64 (unsigned long long)
NativeInt	System::NativeInt	32-bit platforms	int
		64-bit platforms	__int64
NativeUInt	System::NativeUInt	32-bit platforms	unsigned int
		64-bit platforms	unsigned __int64
LongInt	System::Longint	32-bit platforms 64-bit Windows	int
		64-bit POSIX Platforms	long
LongWord		32-bit platforms 64-bit Windows	unsigned
		64-bit POSIX Platforms	unsigned long
FixedInt			int
FixedUInt			unsigned int
Single	System::Single		float
Double	System::Double		double
Extended	System::Extended		long double
Currency	System::Currency, System::CurrencyBase
Comp	System::Comp, System::CompBase
Real			double Note: The mapping assumes {$REALCOMPATIBILITY OFF}
ShortString	System::ShortString, System::ShortStringBase
OpenString	System::OpenString		char* const
String	System::UnicodeString
WideString	System::WideString
AnsiChar		char
Char	System::WideChar	Windows platforms	wchar_t
		POSIX platforms	char16_t
WideChar	System::WideChar	Windows platforms	wchar_t
		POSIX platforms	char16_t
File	System::file
Text	System::TextFile
ByteBool	System::ByteBool		unsigned char
WordBool	System::WordBool		unsigned short
LongBool	System::LongBool		int
Real48	not supported in C++
Pointer			void*
PWideChar	System::WideChar*	Windows platforms	wchar_t*
		POSIX platforms	char16_t*
PAnsiChar			char*
Variant	System::Variant defined in sysvari.h
OleVariant	System::OleVariant defined in sysvari.h

Note: 32-bit platforms include 32-bit Windows and Android.
POSIX platforms supported by C++ include iOS, Android, and Linux.

See Also

• Simple Types (Delphi)
• Types Defined Differently
• 64-bit Windows Data Types Compared to 32-bit Windows Data Types