cbits/directory.c

   1 #if defined(__GLASGOW_HASKELL__) || defined(__HUGS__)
   2 /*
   3  * (c) The University of Glasgow 2002
   4  *
   5  */
   6
   7 #define INLINE
   8 #include "HsDirectory.h"
   9
  10 /*
  11  * Function: __hscore_getFolderPath()
  12  *
  13  * Late-bound version of SHGetFolderPath(), coping with OS versions
  14  * that have shell32's lacking that particular API.
  15  *
  16  */
  17 #if defined(_MSC_VER) || defined(__MINGW32__) || defined(_WIN32)
  18 typedef HRESULT (*HSCORE_GETAPPFOLDERFUNTY)(HWND,int,HANDLE,DWORD,char*);
  19 int
  20 __hscore_getFolderPath(HWND hwndOwner,
  21                        int nFolder,
  22                        HANDLE hToken,
  23                        DWORD dwFlags,
  24                        char*  pszPath)
  25 {
  26     static int loaded_dll = 0;
  27     static HMODULE hMod = (HMODULE)NULL;
  28     static HSCORE_GETAPPFOLDERFUNTY funcPtr = NULL;
  29     /* The DLLs to try loading entry point from */
  30     char* dlls[] = { "shell32.dll", "shfolder.dll" };
  31
  32     if (loaded_dll < 0) {
  33         return (-1);
  34     } else if (loaded_dll == 0) {
  35         int i;
  36         for(i=0;i < sizeof(dlls); i++) {
  37             hMod = LoadLibrary(dlls[i]);
  38             if ( hMod != NULL &&
  39                  (funcPtr = (HSCORE_GETAPPFOLDERFUNTY)GetProcAddress(hMod, "SHGetFolderPathA")) ) {
  40                 loaded_dll = 1;
  41                 break;
  42             }
  43         }
  44         if (loaded_dll == 0) {
  45             loaded_dll = (-1);
  46             return (-1);
  47         }
  48     }
  49     /* OK, if we got this far the function has been bound */
  50     return (int)funcPtr(hwndOwner,nFolder,hToken,dwFlags,pszPath);
  51     /* ToDo: unload the DLL on shutdown? */
  52 }
  53 #endif /* WIN32 */
  54 #endif /* !__NHC__ */
  55