How to get 'SHGetFolderPath' to work with '#define UNICODE'

I am trying to get 'SHGetFolderPath' to work with the '#define UNICODE'. I need '#define UNICODE' as within the same piece of code, i need to pass in unicode for a function to work. Unfortunately when i try to compile and run the following code, I do not get the desktop directory returned properly. Any idea why?

#define UNICODE
#define _WIN32_WINNT 0x0501
#include <windows.h>
#include <stdio.h>
#include <lm.h>
#include <shlobj.h>
#include <shlwapi.h>
#include <string>
#include <aclapi.h>
#include <winerror.h>
#include <tchar.h>
using namespace std;

/*------------------------- Function to provide desktop shortcut -------------------------*/
HRESULT CreateSC(LPCTSTR lpszPath, LPSTR lpszPathLink, LPCTSTR lpszDesc, LPCTSTR lpszWorkingDir)
{
   CoInitialize(NULL);
   HRESULT hres;
   IShellLink *pShLink;
   // Get a pointer to the IShellLink interface.
   hres = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER, IID_IShellLink,
   reinterpret_cast<void**>(&pShLink));
   if (SUCCEEDED(hres))
   {          
      pShLink->SetPath(lpszPath);
      pShLink->SetDescription(lpszDesc);
      pShLink->SetWorkingDirectory(lpszWorkingDir);

      IPersistFile *pPersistFile;
      hres = pShLink->QueryInterface( IID_IPersistFile, reinterpret_cast<void**>(&pPersistFile));
         
      if (SUCCEEDED(hres))
      {
         wchar_t wsz[MAX_PATH];    
         MultiByteToWideChar(CP_ACP, 0, lpszPathLink, -1, wsz, MAX_PATH);
               
         // Save the link
         hres = pPersistFile->Save( wsz, TRUE);
         pPersistFile->Release();
        }
         else
            printf("Failed to create link!\n");
         pShLink->Release();
   }
   CoUninitialize();
   return hres;
}

void main()
{
/*------------------------ Creates a desktop shortcut -------------------------*/
   TCHAR DesktopPath[MAX_PATH];
    if(SUCCEEDED(SHGetFolderPath(NULL, CSIDL_WINDOWS, NULL, 0, DesktopPath)))
      printf("Done! The path is %s\n", DesktopFolderPath);
   else
      printf("Error creating desktop shortcut!\n");
}
fuzzylingAsked:
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itsmeandnobodyelseCommented:
>>>> I do not get the desktop directory returned properly
Can you tell where it goes wrong and what gows wrong?
0
itsmeandnobodyelseCommented:
CSIDL_WINDOWS identifies the WINDIR or Windows directory, e. g. C:\Windows, rather than the desktop.

I read in the docs that the return value of SHGetFolderPathA and SHGetFolderPathW were different. So maybe the SUCCEEDED macro was not redefined properly.

MSDN:
E_FAIL SHGetFolderPathW only. The CSIDL in nFolder is valid, but the folder does not exist. Note that the failure code is different for the ANSI and Unicode versions of this function.

Try:

if (!(E_FAIL == SHGetFolderPath(NULL, CSIDL_WINDOWS, NULL, 0, DesktopPath)))
      printf("Done! The path is %s\n", DesktopFolderPath);
   else
      printf("Error creating desktop shortcut!\n");
}

Regards, Alex
0
Deepu AbrahamR & D Engineering ManagerCommented:
You should try with CSIDL_PROFILE / CSIDL_PROFILES rather than CSIDL_WINDOWS to get Desktop folders

Best Regards,
DeepuAbrahamK
0
jkrCommented:
Keep your parameters and string types consitent:

#define UNICODE
#define _WIN32_WINNT 0x0501
#include <windows.h>
#include <stdio.h>
#include <lm.h>
#include <shlobj.h>
#include <shlwapi.h>
#include <string>
#include <aclapi.h>
#include <winerror.h>
#include <tchar.h>
using namespace std;

/*------------------------- Function to provide desktop shortcut -------------------------*/

// not 'LPSTR lpszPathLink', but 'LP*T*STR lpszPathLink'
HRESULT CreateSC(LPCTSTR lpszPath, LPTSTR lpszPathLink, LPCTSTR lpszDesc, LPCTSTR lpszWorkingDir)
{
   CoInitialize(NULL);
   HRESULT hres;
   IShellLink *pShLink;
   // Get a pointer to the IShellLink interface.
   hres = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER, IID_IShellLink,
   reinterpret_cast<void**>(&pShLink));
   if (SUCCEEDED(hres))
   {          
      pShLink->SetPath(lpszPath);
      pShLink->SetDescription(lpszDesc);
      pShLink->SetWorkingDirectory(lpszWorkingDir);

      IPersistFile *pPersistFile;
      hres = pShLink->QueryInterface( IID_IPersistFile, reinterpret_cast<void**>(&pPersistFile));
         
      if (SUCCEEDED(hres))
      {
      /* no conversion needed if you pass a UNICODE path to link
         wchar_t wsz[MAX_PATH];    
         MultiByteToWideChar(CP_ACP, 0, lpszPathLink, -1, wsz, MAX_PATH);
        */      
         // Save the link
         hres = pPersistFile->Save( lpszPathLink, TRUE);
         pPersistFile->Release();
        }
         else
            wprintf(L"Failed to create link!\n");
         pShLink->Release();
   }
   CoUninitialize();
   return hres;
}

void main()
{
/*------------------------ Creates a desktop shortcut -------------------------*/
   TCHAR DesktopPath[MAX_PATH];
    if(SUCCEEDED(SHGetFolderPath(NULL, CSIDL_WINDOWS, NULL, 0, DesktopPath)))
      wprintf(L"Done! The path is %s\n", DesktopFolderPath);
   else
      wprintf(L"Error creating desktop shortcut!\n");

}
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fuzzylingAuthor Commented:
Hi,
Thanks Alex for pointing out that 'CSIDL_WINDOWS' identifies the windows directory. I was debugging and changed it from 'CSIDL_DESKTOPDIRECTORY'. Thanks jkr for helping me to correct those inconsistencies!
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