[project @ 2005-03-19 02:03:26 by sof]

[ghc-base.git] / cbits / dirUtils.c

diff --git a/cbits/dirUtils.c b/cbits/dirUtils.c
index fdcdf29..86b3657 100644 (file)
--- a/cbits/dirUtils.c
+++ b/cbits/dirUtils.c
@@ -172,3 +172,45 @@ __hscore_renameFile( HsAddr src,
 #endif
 }
 
+/*
+ * Function: __hscore_getFolderPath()
+ *
+ * Late-bound version of SHGetFolderPath(), coping with OS versions
+ * that have shell32's lacking that particular API.
+ *
+ */
+#if defined(mingw32_HOST_OS) || defined(__MINGW32__) || defined(_MSC_VER)
+typedef HRESULT (*HSCORE_GETAPPFOLDERFUNTY)(HWND,int,HANDLE,DWORD,char*);
+int
+__hscore_getFolderPath(HWND hwndOwner,
+                      int nFolder,
+                      HANDLE hToken,
+                      DWORD dwFlags,
+                      char*  pszPath)
+{
+    static int loaded_dll = 0;
+    static HMODULE hMod = (HMODULE)NULL;
+    static HSCORE_GETAPPFOLDERFUNTY funcPtr = NULL;
+    
+    if (loaded_dll < 0) {
+       return (-1);
+    } else if (loaded_dll == 0) {
+       hMod = LoadLibrary("shell32.dll");
+       if (hMod == NULL) {
+           loaded_dll = (-1);
+           return (-1);
+       } else {
+           funcPtr = (HSCORE_GETAPPFOLDERFUNTY)GetProcAddress(hMod, "SHGetFolderPathA");
+           if (!funcPtr) {
+               loaded_dll = (-1);
+               return (-1);
+           } else {
+               loaded_dll = 1;
+           }
+       }
+    }
+    /* OK, if we got this far the function has been bound */
+    return (int)funcPtr(hwndOwner,nFolder,hToken,dwFlags,pszPath);
+    /* ToDo: unload the DLL? */
+}
+#endif