How include header file?

[Steven Schveighoffer]

On 9/7/22 4:23 PM, Injeckt wrote:
> On Wednesday, 7 September 2022 at 19:38:52 UTC, H. S. Teoh wrote:
>> On Wed, Sep 07, 2022 at 06:11:14PM +0000, Injeckt via 
>> Digitalmars-d-learn wrote:
>>> I need to include this Ws2tcpip.h header file to my project. How can 
>>> I do this? It's all because I need inet_ntop function from this 
>>> header file.
>>
>> If that's the only function you need, you can just copy the 
>> declaration of inet_ntop into your .d file and mark it as extern(C). 
>> E.g., on my OS it's declared as:
>>
>>     const char *inet_ntop(int af, const void *restrict src, char 
>> *restrict dst, socklen_t size);
>>
>> Convert it to D:
>>
>>     extern(C) const(char)* inet_ntop(int af, const(void)* src, char* 
>> dst, socklen_t size);
>>
>> You probably also need:
>>
>>     alias socklen_t = ...;
>>
>> The definition can be found in your system header files. Probably you 
>> can just get away with size_t.
>>
>>
>> T
> 
> It doesn't work. "Reference to an unresolved external symbol 
> _inet_ntop". I guess I can add my utils.c to my .d project when I 
> compile project and I need write in this file function wrapper of 
> inet_ntop.

On windows, it might have different versions based on character width.

Don't have time right now to look it up on my windows system.

-Steve