FILE_NAME_INFO was not declared in this scope

[adam2016]

hi guys I'm just bored so I decided to mess around a little testing functions and classes from different headers

anyway I ran into an error when I tried creating a struct from the windows.h header file

I'm not sure why _FILETIME will work with no problems but I can't create a struct from _FILE_NAME_INFO



main.cpp|14|error: '_FILE_NAME_INFO' was not declared in this scope|

thanks

  #include <stdio.h>
#include <windows.h>
#include <security.h>
#include <iostream>
#include <limits>
#include <ctime>


using namespace std;

int main()
{

   _FILE_NAME_INFO i;
   _FILETIME file;

   cout << file.dwLowDateTime << endl;
   cout << file.dwHighDateTime << endl;

}.

[Thomas1965]

When I remove #include <security.h> it works on VS 2015

[adam2016]

I tried removing secuirty.h from the includes but still no luck

I am using codeblocks so maybe I need a certain flag set on my compiler?

[Ganado]

fwiw: it doesn't work on my version of mingw as well (which is probably what you're using as well, since you mentioned codeblocks). Not sure what the issue is. I guess gcc might just not support it.

Edit: The struct definition is located inside include/winbase.h (which is included with windows.h), but it's only defined if

#if _WIN32_WINNT >= 0x0600
#if WINAPI_FAMILY_PARTITION (WINAPI_PARTITION_APP)

  // ...

  typedef struct _FILE_NAME_INFO {
    DWORD FileNameLength;
    WCHAR FileName[1];
  } FILE_NAME_INFO,*PFILE_NAME_INFO;

My _WIN32_WINNT returns a number smaller than 0x0600 (1536). I think an additional SDK or something is needed?

BTW, _WIN32_WINNT >= 0x0600 is supposed to mean "If version is greater than Windows Vista"
See: https://msdn.microsoft.com/en-us/library/6sehtctf.aspx

[adam2016]

yes I'm using mingw

thanks Gnado

[Ganado]

Apparently you might just need to override the macro definition yourself if you want to support it.

http://www.mingw.org/wiki/Use_more_recent_defined_functions

You need to set defines _WIN32_WINDOWS, _WIN32_WINNT, WINVER and/or _WIN32_IE to the minimum platform you plan to support before including the windows.h header file. Possible values for these definitions can be found in the header w32api.h file.