I am not able to compile my program SHGetSpecialFolderPath() not being declared in the scope of the program, while the correct header is being included (according to MSDN)
http://msdn.microsoft.com/en-us/library/bb762204(v=vs.85).aspx
Here are the headers for my project:
#include <iostream>
#include <iostream>
#include <windows.h>
#include <algorithm>
#include <vector>
#include <fstream>
#include <direct.h>
#include <shlobj.h>
With error:
C:\Users\user\Documents\getAppData\main.cpp|31|error: `SHGetSpecialFolderPath' was not declared in this scope
with shlobj.h being the header with the declaration in it.
Any ideas why the compiler is throwing the error? Here is how I am calling the function:
char appData[MAX_PATH];
SHGetSpecialFolderPath( NULL
,appData
,CSIDL_LOCAL_APPDATA
,1 );
cout << appData << endl;
Thanks!
From the MSDN page:
The Microsoft Internet Explorer 4.0
Desktop Update must be installed for
this function to be available.
With Windows 2000, this function is
superseded by ShGetFolderPath. You can
use this function on earlier systems
by including the redistributable DLL,
ShFolder.dll.
Perhaps this is your problem?
Related
I was trying to compile an old code, and received the following error:
error G1A4676F8: no member named '__find_end' in namespace 'std'
I searched online and found it is defined in stl_algo.h, which I couldn't find in my Windows system. Also, the documentations were of libstdc++4 and earlier.
The code compiles fine on https://godbolt.org/ with all MSVC versions.
The include statements are:
#include <string>
#include <algorithm>
#include <iterator>
#include <ostream>
#include <iomanip>
#include <stdexcept>
The compiler shows an alternative as find_end defined in algorithm but I am not sure if __find_end has the same functionality as find_end.
So, my question is, is __find_end deprecated?
If not, where can I find it's declaration in Windows?
If yes, what are my alternatives? Is find_end a perfect substitute for __find_end?
I'm having a strange linking issue after I included inotify in my program to monitor changes to a filesystem. The project includes <fcntl.h> in many other source files. However, when I include <sys/inotify.h> in the source file which is doing the directory monitoring, I get this error:
/usr/include/fcntl.h:30:1: error: expected initializer before ‘extern’
__BEGIN_DECLS
My project uses CMake, although that doesn't seem to be relevant for finding inotify. It IS finding the inotify declarations to my knowledge, since when I included , it threw an error that inotify_init() and the other functions I used were not defined. Inotify includes fcntl and is partially built on top of some of the functionality there, so my first thought was that it's importing a different version of fcntl than the rest of my program.
In ObjectManager.h:
#ifndef MANAGE_OBJECT_H
#define MANAGE_OBJECT_H
#include "config.h"
//includes all lua headers under extern 'C'
#include <lua.hpp>
#include <list>
#include <unordered_map>
#include <pthread.h>
class ObjectManager //...
The only thing that changed was ObjectManager.cc, with the addition of sys/notify and the implementation of the watcher (not included because this is a linking issue):
#include "config.h"
#include "ObjectManager.h"
#include "Control.h"
#ifdef OBJECT_MANAGER_ENABLED
#include <string.h>
#include <stdio.h>
#include <dirent.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <vector>
#include <unistd.h>
#include <fstream>
#include <sys/inotify.h>
//... inotify implementation
Where Control.h declares #include <fcntl.h>.
This is the closest issue I found, related to some problems in the implementation of different fcntl headers for userspace usage. https://lkml.org/lkml/2008/9/16/98
The same problem occurs on Linux 2.6 running on Centos 6 and Linux 4.0 running on Centos 7.
Any ideas on what is causing this error and how to successfully include inotify?
Resolution: A function definition lacked a semicolon at the END of ObjectManager.h right before a #endif, and the resulting GCC error that propagated through the next includes in a complicated manner, resulting in a strange preprocessor error in fcntl.h.
Visual Studio 2015. I am reading the "Windows via C\C++" book and try to use its code samples. Author writes that the "safe" functions of string have the _s suffix and are declared in the StrSafe.h header. This header are to be the last in the list of includes. In my code I included such headers:
#include <iostream>
#include <exception>
#include <string>
#include <Windows.h>
#include <strsafe.h>
But I have a problem:
// IDE doesn't see the _tcscpy_s function
errno_t result = _tcscpy_s(szBuffer, _countof(szBuffer), TEXT("0123456789"));
I looked for info about the _tcscpy_s function, but I didn't see info about its header file (I expected that it is strsafe.h).
How can I fix it?
Just like any other "Generic Text" string function version, the _tcscpy_s() function is declared in TCHAR.H (as mentioned in the documentation).
Add #include <tchar.h> to your code.
I'm trying to create a combo box in Win32 by following this msdn tutorial.
When I implement step 2 and try to compile, I get the following error:
error: 'wcscpy_s' was not declared in this scope
wcscpy_s(A, sizeof(A) / sizeof(TCHAR), (TCHAR*)Planets[k]);
I've included the following header files, hoping to solve this issue:
#include <string.h>
#include <wchar.h>
#include <windows.h>
#include <CommCtrl.h>
#include <math.h>
#include <objbase.h>
Can someone help me understand why I'm getting this error? Thanks in advance.
From cpp-reference
As with all bounds-checked functions, wcscpy_s is only guaranteed to be available if STDC_LIB_EXT1 is defined by the implementation and if the user defines STDC_WANT_LIB_EXT1 to the integer constant 1 before including wchar.h.
I can litterally not find which library/header this function is in, I've looked at so many examples of people using this function, but there are no results...
These are all the stuff I've included:
#include "Console.h"
#include "Direct3D9.h"
#include <string>
#include <cerrno>
#include <cstdlib>
#include <iostream>
#include <algorithm>
#include <math.h>
#include <cmath>
#include <stdio.h>
#include <stdlib.h>
But still strtof comes up as "Error namespace "std" has no member "strtof""
What I'm trying to do:
flValue = std::strtof( vszArgs.at( 1 ).c_str( ), NULL );
pConVar->Set( flValue );
Visual Studio 2012 does not implement strtof.
Link to MSDN bug report which includes a suggested workaround.
You can find it in cstdlib when using C++11. The information can easily be found here : http://www.cplusplus.com/reference/cstdlib/strtof/?kw=strtof
My guess is that you aren't compiling using c++11.
1) Include stdlib.h
#include <stdlib.h> /* strtof */
from http://www.cplusplus.com/reference/cstdlib/strtof/
If that still doesn't work...
2) Make sure your compiler is C++11 or newer
It's new as of C++11 so if you have an older compiler it won't work.
If that still doesn't work...
3) Your compiler may just not support it
Visual C++ 2012 does not have full support for the C++11 standard. See the Visual Studio bug "Missing strtof, strtold, strtoll, strtoull functions from stdlib.h".
We don't yet have those functions in the CRT. We will consider adding them to a future version of Visual C++.