如何定义和QUOT; UCHAR * POINTER_32＆QUOT;和＆QUOT;无效* POINTER_32＆QUOT;在德尔福类型？ [英] How to define "UCHAR * POINTER_32" and "VOID * POINTER_32" types in Delphi?

问题描述

翻译 IP_OPTION_INFORMATION32 和的 ICMP_ECHO_REPLY32 为64位编译我得到了stucked数据类型的结构使用那里。从参考结构的定义：

Translating the IP_OPTION_INFORMATION32 and ICMP_ECHO_REPLY32 structures for 64-bit compiler I got stucked with data types to use there. Structure definitions from the reference:

的IP_OPTION_INFORMATION32结构：

typedef struct _IP_OPTION_INFORMATION32 {
  UCHAR              Ttl;
  UCHAR              Tos;
  UCHAR              Flags;
  UCHAR              OptionsSize;
  UCHAR * POINTER_32 OptionsData;
} IP_OPTION_INFORMATION32, *PIP_OPTION_INFORMATION32;

我会翻译这种方式（德尔福XE2，64位目标平台）。正如你所看到的，我不知道要用于结构的 OptionsData 字段是什么类型的：

I would translate this way (for Delphi XE2, 64-bit target platform). As you can see, I don't know what type to use for the OptionsData field of the structure:

IP_OPTION_INFORMATION32 = record
  Ttl: UCHAR;
  Tos: UCHAR;
  Flags: UCHAR;
  OptionsSize: UCHAR;
  OptionsData:       // what should I use here for UCHAR * POINTER_32 ?
end;

ICMP_ECHO_REPLY32结构：

typedef struct icmp_echo_reply32 {
  IPAddr                         Address;
  ULONG                          Status;
  ULONG                          RoundTripTime;
  USHORT                         DataSize;
  USHORT                         Reserved;
  VOID * POINTER_32              Data;
  struct ip_option_information32  Options;
} ICMP_ECHO_REPLY32, *PICMP_ECHO_REPLY32;

有关德尔福XE2 64位目标平台，我会写：

For Delphi XE2 64-bit target platform I would write:

ICMP_ECHO_REPLY32 = record
  Address: TIPAddr;  // defined before
  Status: ULONG;
  RoundTripTime: ULONG;
  DataSize: USHORT;
  Reserved: USHORT;
  Data:              // what should I use here for VOID * POINTER_32 ?
  Options: IP_OPTION_INFORMATION32;
end;

问：

你如何定义的 UCHAR * POINTER_32 和 VOID * POINTER_32 类型在Delphi中的64位平台的目标？据我所知，目前还没有32位的指针类型可用于64位平台的目标，我只是不喜欢它是定义如作为的Int32 键入： - ）

Question:

How would you define the UCHAR * POINTER_32 and VOID * POINTER_32 types in Delphi for 64-bit platform target ? As far as I know, there is no 32-bit pointer type available for 64-bit platform target and I just don't like it to be defined e.g. as a Int32 type :-)

什么是最precise翻译所提到的类型？

What is the most precise translation for the mentioned types ?

推荐答案

什么 POINTER_32 是覆盖在另一个堆栈溢出问题的问题：的POINTER_32 - 它是什么，以及为什么

The issue of what POINTER_32 is covered in another Stack Overflow question: POINTER_32 - what is it, and why?

与在一个不同的过程定义的结构，一个具有32位指针的互操作执行时，您会使用它。

You would use it when performing interop with structs that are defined in a different process, one that has 32 bit pointers.

您不必 __ ptr32 的德尔福相当于所以你根本没有选择，只能声明为32位整数。我会用一个无符号的类型。

You don't have the equivalent of __ptr32 in Delphi so you have simply no choice other than to declare it as a 32 bit integer. I would use an unsigned type.

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