comdlg32: Store client GUID with SetClientGuid().

dlls/comdlg32/itemdlg.c

@@ -125,6 +125,8 @@ typedef struct FileDialogImpl {
     HWND cctrls_hwnd;
     struct list cctrls;
     UINT_PTR cctrl_next_dlgid;
+
+    GUID client_guid;
 } FileDialogImpl;
 
 /**************************************************************************
@@ -2032,8 +2034,9 @@ static HRESULT WINAPI IFileDialog2_fnClose(IFileDialog2 *iface, HRESULT hr)
 static HRESULT WINAPI IFileDialog2_fnSetClientGuid(IFileDialog2 *iface, REFGUID guid)
 {
     FileDialogImpl *This = impl_from_IFileDialog2(iface);
-    FIXME("stub - %p (%s)\n", This, debugstr_guid(guid));
-    return E_NOTIMPL;
+    TRACE("%p (%s)\n", This, debugstr_guid(guid));
+    This->client_guid = *guid;
+    return S_OK;
 }
 
 static HRESULT WINAPI IFileDialog2_fnClearClientData(IFileDialog2 *iface)
@@ -3627,6 +3630,8 @@ static HRESULT FileDialog_constructor(IUnknown *pUnkOuter, REFIID riid, void **p
     fdimpl->default_ext = NULL;
     fdimpl->custom_cancelbutton = fdimpl->custom_filenamelabel = NULL;
 
+    fdimpl->client_guid = GUID_NULL;
+
     /* FIXME: The default folder setting should be restored for the
      * application if it was previously set. */
     SHGetDesktopFolder(&psf);

dlls/comdlg32/tests/itemdlg.c

@@ -1392,6 +1392,7 @@ static void test_customize(void)
     if(FAILED(hr))
     {
         skip("Skipping IFileDialogCustomize tests.\n");
+        IFileDialog_Release(pfod);
         return;
     }
 
@@ -1897,6 +1898,30 @@ static void test_customize(void)
     ok(!ref, "Refcount not zero (%d).\n", ref);
 }
 
+static void test_persistent_state(void)
+{
+    IFileDialog *fd;
+    HRESULT hr;
+
+    hr = CoCreateInstance(&CLSID_FileOpenDialog, NULL, CLSCTX_INPROC_SERVER,
+                          &IID_IFileDialog, (void**)&fd);
+    ok(hr == S_OK, "got 0x%08x.\n", hr);
+
+if (0)
+{
+    /* crashes at least on Win8 */
+    hr = IFileDialog_SetClientGuid(fd, NULL);
+}
+
+    hr = IFileDialog_SetClientGuid(fd, &IID_IUnknown);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+
+    hr = IFileDialog_SetClientGuid(fd, &IID_NULL);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+
+    IFileDialog_Release(fd);
+}
+
 START_TEST(itemdlg)
 {
     OleInitialize(NULL);
@@ -1908,6 +1933,7 @@ START_TEST(itemdlg)
         test_advise();
         test_filename();
         test_customize();
+        test_persistent_state();
     }
     else
         skip("Skipping all Item Dialog tests.\n");