请教一下C++和Pascal的类型对应关系

Question

c++      ->        pascal
unsigned short     ->     Word
char *        ->     Pchar
unsigned long       ->   LongWord
BOOL         ->      Boolean
int          ->      Integer
请问是这样对应的吗，还有一个问题
c++函数中参数void* buf  在 Pascal中是不是用  var buf ?  还是 OleVariant？

Answer 1

Delphi和C++数据类型对照表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http://www.xfsoft.cn/Article_Show.asp?ArticleID=333

Answer 2

正解void *buf delphi 有两种对应, var Buf         这个头晕点, 是通用对像引用, 也是无值, 更像 C++ void &
Buf: Pointer    这个才是一一对应的 void * 的, 不过 delphi 强类型反而有点不好搞, Buf^ 不让的, 要转义成实际的才行 Pchar(Buf)^不过如果是 dll 导出参数而饶过 delphi 类型检查的话, 两个是一样的也就是说 
   procedure foo(var buf); external 'xxx' name 'xxx';
和 procedure foo(buf: pointer); external 'xxx' name 'xxx';是完全等价的