Como procurar pastas a partir do actual

#define STRICT
#include <windows.h>
#include <shlobj.h>

INT CALLBACK BrowseCallbackProc(HWND hwnd, 
                                UINT uMsg,
                                LPARAM lp, 
                                LPARAM pData) 
{
   TCHAR szDir[MAX_PATH];

   switch(uMsg) 
   {
   case BFFM_INITIALIZED: 
      if (GetCurrentDirectory(sizeof(szDir)/sizeof(TCHAR), szDir))
      {
         // WParam is TRUE since you are passing a path.
         // It would be FALSE if you were passing a pidl.
         SendMessage(hwnd, BFFM_SETSELECTION, TRUE, (LPARAM)szDir);
      }
      break;

   case BFFM_SELCHANGED: 
      // Set the status window to the currently selected path.
      if (SHGetPathFromIDList((LPITEMIDLIST) lp ,szDir))
      {
         SendMessage(hwnd,BFFM_SETSTATUSTEXT,0,(LPARAM)szDir);
      }
      break;
   }
   return 0;
}


int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR lpszCmdLine,
                     int nCmdShow)
{
   BROWSEINFO bi;
   TCHAR szDir[MAX_PATH];
   LPITEMIDLIST pidl;
   LPMALLOC pMalloc;

   if (SUCCEEDED(SHGetMalloc(&pMalloc)))
   {
      ZeroMemory(&bi,sizeof(bi));
      bi.hwndOwner = NULL;
      bi.pszDisplayName = 0;
      bi.pidlRoot = 0;
      bi.ulFlags = BIF_RETURNONLYFSDIRS | BIF_STATUSTEXT;
      bi.lpfn = BrowseCallbackProc;

pidl = SHBrowseForFolder(&bi); 
if (pidl) 
{ 
    // 
    // Other code omited 
    // 
    pMalloc->lpVtbl->Free(pMalloc,pidl); 
} 
pMalloc->lpVtbl->Release(pMalloc);
      }
   }
   return 0;
}