Delphi        字长/值域                                C++

ShortInt    8位有符号整型                        signed char
SmallInt    16位有符号整型                        short
LongInt        32位有符号整型                        int
Byte        8位无符号整型                        unsigned char
Word        16位无符号整型                        unsigned short
Integer        32位有符号整型                        int
Cardinal    32位无符号整型                        unsigned int
Boolean        真/假                                bool
ByteBool    真/假 或 8位无符号整型                unsigned char
WordBool    真/假 或 16位无符号整型                unsigned short
LongBool    真/假 或 32位无符号整型                BOOL (WinAPI)
AnsiChar    8位无符号字符                        char
WideChar    宽字编码字符                        wchar_t
Char        8位无符号字符                        char
AnsiString    Delphi的字符串类                    AnsiString 类
String[n]    老式的Delphi字符串, n = 1..255字节    SmallString<n> 模板类
ShortString    老式的Delphi字符串, 255字节            SmallString<255>
String        Delphi的AnsiString类                AnsiString
Single        32位浮点数                            float
Double        64位浮点数                            double
Extended    80位浮点数                            long double
Real        32位浮点数                            double
Pointer        32无类型指针                        void *
PChar        32位字符型指针                        unsigned char *
PAnsiChar    32位ANSI型字符指针                    unsigned char *
Comp        64位浮点数                            Comp 类
OleVariant    OLE可变类型值                        OleVariant 类


转：http://blog.csdn.net/guoqlee/archive/2007/08/17/1748372.aspx