text: /*
   * Tests for autocomplete
   *
   * Copyright 2008 Jan de Mooij
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
   */
  
  #define COBJMACROS
  
  #include <stdarg.h>
  
  #include "windows.h"
  #include "shobjidl.h"
  #include "shlguid.h"
  #include "shldisp.h"
  #include "shlobj.h"
  
  #include "wine/heap.h"
  #include "wine/test.h"
  
  static HWND hMainWnd, hEdit;
  static HINSTANCE hinst;
  static int killfocus_count;
  
  static void test_invalid_init(void)
  {
      HRESULT hr;
      IAutoComplete *ac;
      IUnknown *acSource;
      HWND edit_control;
  
      /* AutoComplete instance */
      hr = CoCreateInstance(&CLSID_AutoComplete, NULL, CLSCTX_INPROC_SERVER,
                           &IID_IAutoComplete, (void **)&ac);
      if (hr == REGDB_E_CLASSNOTREG)
      {
          win_skip("CLSID_AutoComplete is not registered\n");
          return;
      }
      ok(hr == S_OK, "no IID_IAutoComplete (0x%08lx)\n", hr);
  
      /* AutoComplete source */
      hr = CoCreateInstance(&CLSID_ACLMulti, NULL, CLSCTX_INPROC_SERVER,
                          &IID_IACList, (void **)&acSource);
      if (hr == REGDB_E_CLASSNOTREG)
      {
          win_skip("CLSID_ACLMulti is not registered\n");
          IAutoComplete_Release(ac);
          return;
      }
      ok(hr == S_OK, "no IID_IACList (0x%08lx)\n", hr);
  
      edit_control = CreateWindowExA(0, "EDIT", "Some text", 0, 10, 10, 300, 300,
                         hMainWnd, NULL, hinst, NULL);
      ok(edit_control != NULL, "Can't create edit control\n");
  
      /* The refcount of acSource would be incremented on older Windows. */
      hr = IAutoComplete_Init(ac, NULL, acSource, NULL, NULL);
      ok(hr == E_INVALIDARG ||
         broken(hr == S_OK), /* Win2k/XP/Win2k3 */
         "Init returned 0x%08lx\n", hr);
      if (hr == E_INVALIDARG)
      {
          LONG ref;
  
          IUnknown_AddRef(acSource);
          ref = IUnknown_Release(acSource);
          ok(ref == 1, "Expected AutoComplete source refcount to be 1, got %ld\n", ref);
      }
  
  if (0)
  {
      /* Older Windows versions never check the window handle, while newer
       * versions only check for NULL. Subsequent attempts to initialize the
       * object after this call succeeds would fail, because initialization
       * state is determined by whether a non-NULL window handle is stored. */
      hr = IAutoComplete_Init(ac, (HWND)0xdeadbeef, acSource, NULL, NULL);
      ok(hr == S_OK, "Init returned 0x%08lx\n", hr);
  
      /* Tests crash on older Windows. */
      hr = IAutoComplete_Init(ac, NULL, NULL, NULL, NULL);
      ok(hr == E_INVALIDARG, "Init returned 0x%08lx\n", hr);
  
      hr = IAutoComplete_Init(ac, edit_control, NULL, NULL, NULL);
      ok(hr == E_INVALIDARG, "Init returned 0x%08lx\n", hr);
  }
  
      /* bind to edit control */
      hr = IAutoComplete_Init(ac, edit_control, acSource, NULL, NULL);
      ok(hr == S_OK, "Init returned 0x%08lx\n", hr);
  
      /* try invalid parameters after successful initialization .*/
      hr = IAutoComplete_Init(ac, NULL, NULL, NULL, NULL);
      ok(hr == E_INVALIDARG ||
         hr == E_FAIL, /* Win2k/XP/Win2k3 */
         "Init returned 0x%08lx\n", hr);
  
      hr = IAutoComplete_Init(ac, NULL, acSource, NULL, NULL);
      ok(hr == E_INVALIDARG ||
         hr == E_FAIL, /* Win2k/XP/Win2k3 */
         "Init returned 0x%08lx\n", hr);
  
      hr = IAutoComplete_Init(ac, edit_control, NULL, NULL, NULL);
      ok(hr == E_INVALIDARG ||
         hr == E_FAIL, /* Win2k/XP/Win2k3 */
         "Init returned 0x%08lx\n", hr);
  
      /* try initializing twice on the same control */
      hr = IAutoComplete_Init(ac, edit_control, acSource, NULL, NULL);
      ok(hr == E_FAIL, "Init returned 0x%08lx\n", hr);
  
      /* try initializing with a different control */
      hr = IAutoComplete_Init(ac, hEdit, acSource, NULL, NULL);
      ok(hr == E_FAIL, "Init returned 0x%08lx\n", hr);
  
      DestroyWindow(edit_control);
  
      /* try initializing with a different control after
       * destroying the original initialization control */
      hr = IAutoComplete_Init(ac, hEdit, acSource, NULL, NULL);
      ok(hr == E_UNEXPECTED ||
         hr == E_FAIL, /* Win2k/XP/Win2k3 */
         "Init returned 0x%08lx\n", hr);
  
      IUnknown_Release(acSource);
      IAutoComplete_Release(ac);
  }
  static IAutoComplete *test_init(void)
  {
      HRESULT r;
      IAutoComplete *ac, *ac2;
      IUnknown *acSource;
      LONG_PTR user_data;
  
      /* AutoComplete instance */
      r = CoCreateInstance(&CLSID_AutoComplete, NULL, CLSCTX_INPROC_SERVER,
                           &IID_IAutoComplete, (LPVOID*)&ac);
      if (r == REGDB_E_CLASSNOTREG)
      {
          win_skip("CLSID_AutoComplete is not registered\n");
          return NULL;
      }
      ok(r == S_OK, "no IID_IAutoComplete (0x%08lx)\n", r);
  
      /* AutoComplete source */
      r = CoCreateInstance(&CLSID_ACLMulti, NULL, CLSCTX_INPROC_SERVER,
                          &IID_IACList, (LPVOID*)&acSource);
      if (r == REGDB_E_CLASSNOTREG)
      {
          win_skip("CLSID_ACLMulti is not registered\n");
          IAutoComplete_Release(ac);
          return NULL;
      }
      ok(r == S_OK, "no IID_IACList (0x%08lx)\n", r);
  
      user_data = GetWindowLongPtrA(hEdit, GWLP_USERDATA);
      ok(user_data == 0, "Expected the edit control user data to be zero\n");
  
      /* bind to edit control */
      r = IAutoComplete_Init(ac, hEdit, acSource, NULL, NULL);
      ok(r == S_OK, "Init returned 0x%08lx\n", r);
  
      user_data = GetWindowLongPtrA(hEdit, GWLP_USERDATA);
      ok(user_data == 0, "Expected the edit control user data to be zero\n");
  
      /* bind a different object to the same edit control */
      r = CoCreateInstance(&CLSID_AutoComplete, NULL, CLSCTX_INPROC_SERVER,
                           &IID_IAutoComplete, (LPVOID*)&ac2);
      ok(r == S_OK, "no IID_IAutoComplete (0x%08lx)\n", r);
  
      r = IAutoComplete_Init(ac2, hEdit, acSource, NULL, NULL);
      ok(r == S_OK, "Init returned 0x%08lx\n", r);
      IAutoComplete_Release(ac2);
  
      IUnknown_Release(acSource);
  
      return ac;
  }
  
  static void test_killfocus(void)
  {
      /* Test if WM_KILLFOCUS messages are handled properly by checking if
       * the parent receives an EN_KILLFOCUS message. */
      SetFocus(hEdit);
      killfocus_count = 0;
      SetFocus(0);
      ok(killfocus_count == 1, "Expected one EN_KILLFOCUS message, got: %d\n", killfocus_count);
  }
  
  static LRESULT CALLBACK MyWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
  {
      switch(msg) {
      case WM_CREATE:
          /* create edit control */
          hEdit = CreateWindowExA(0, "EDIT", "Some text", 0, 10, 10, 300, 300,
                      hWnd, NULL, hinst, NULL);
          ok(hEdit != NULL, "Can't create edit control\n");
          break;
      case WM_COMMAND:
          if(HIWORD(wParam) == EN_KILLFOCUS)
              killfocus_count++;
          break;
      }
      return DefWindowProcA(hWnd, msg, wParam, lParam);
  }
  
  static void createMainWnd(void)
  {
      WNDCLASSA wc;
      wc.style = CS_HREDRAW | CS_VREDRAW;
      wc.cbClsExtra = 0;
      wc.cbWndExtra = 0;
      wc.hInstance = GetModuleHandleA(NULL);
      wc.hIcon = NULL;
      wc.hCursor = LoadCursorA(NULL, (LPSTR)IDC_IBEAM);
      wc.hbrBackground = GetSysColorBrush(COLOR_WINDOW);
      wc.lpszMenuName = NULL;
      wc.lpszClassName = "MyTestWnd";
      wc.lpfnWndProc = MyWndProc;
      RegisterClassA(&wc);
  
      hMainWnd = CreateWindowExA(0, "MyTestWnd", "Blah", WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT, CW_USEDEFAULT, 130, 105, NULL, NULL, GetModuleHandleA(NULL), 0);
  }
  
  static WNDPROC HijackerWndProc_prev;
  static const WCHAR HijackerWndProc_txt[] = {'H','i','j','a','c','k','e','d',0};
  static LRESULT CALLBACK HijackerWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
  {
      switch(msg) {
      case WM_GETTEXT:
      {
          size_t len = min(wParam, ARRAY_SIZE(HijackerWndProc_txt));
          memcpy((void*)lParam, HijackerWndProc_txt, len * sizeof(WCHAR));
          return len;
      }
      case WM_GETTEXTLENGTH:
          return ARRAY_SIZE(HijackerWndProc_txt) - 1;
      }
      return CallWindowProcW(HijackerWndProc_prev, hWnd, msg, wParam, lParam);
  }
  
  static LRESULT CALLBACK HijackerWndProc2(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
  {
      switch(msg) {
      case EM_SETSEL:
          lParam = wParam;
          break;
      case WM_SETTEXT:
          lParam = (LPARAM)HijackerWndProc_txt;
          break;
      }
      return CallWindowProcW(HijackerWndProc_prev, hWnd, msg, wParam, lParam);
  }
  
  struct string_enumerator
  {
      IEnumString IEnumString_iface;
      IACList IACList_iface;
      LONG ref;
      WCHAR **data;
      int data_len;
      int cur;
      UINT num_resets;
      UINT num_expand;
      WCHAR last_expand[32];
  };
  
  static struct string_enumerator *impl_from_IEnumString(IEnumString *iface)
  {
      return CONTAINING_RECORD(iface, struct string_enumerator, IEnumString_iface);
  }
  
  static HRESULT WINAPI string_enumerator_QueryInterface(IEnumString *iface, REFIID riid, void **ppv)
  {
      struct string_enumerator *this = impl_from_IEnumString(iface);
      if (IsEqualGUID(riid, &IID_IEnumString) || IsEqualGUID(riid, &IID_IUnknown))
          *ppv = &this->IEnumString_iface;
      else if (IsEqualGUID(riid, &IID_IACList))
          *ppv = &this->IACList_iface;
      else
      {
          *ppv = NULL;
          return E_NOINTERFACE;
      }
  
      IUnknown_AddRef(&this->IEnumString_iface);
      return S_OK;
  }
  
  static ULONG WINAPI string_enumerator_AddRef(IEnumString *iface)
  {
      struct string_enumerator *this = impl_from_IEnumString(iface);
  
      ULONG ref = InterlockedIncrement(&this->ref);
  
      return ref;
  }
  
  static ULONG WINAPI string_enumerator_Release(IEnumString *iface)
  {
      struct string_enumerator *this = impl_from_IEnumString(iface);
  
      ULONG ref = InterlockedDecrement(&this->ref);
  
      if (!ref)
          heap_free(this);
  
      return ref;
  }
  
  static HRESULT WINAPI string_enumerator_Next(IEnumString *iface, ULONG num, LPOLESTR *strings, ULONG *num_returned)
  {
      struct string_enumerator *this = impl_from_IEnumString(iface);
      int i, len;
  
      *num_returned = 0;
      for (i = 0; i < num; i++)
      {
          if (this->cur >= this->data_len)
              return S_FALSE;
  
          len = lstrlenW(this->data[this->cur]) + 1;
  
          strings[i] = CoTaskMemAlloc(len * sizeof(WCHAR));
          memcpy(strings[i], this->data[this->cur], len * sizeof(WCHAR));
  
          (*num_returned)++;
          this->cur++;
      }
  
      return S_OK;
  }
  
  static HRESULT WINAPI string_enumerator_Reset(IEnumString *iface)
  {
      struct string_enumerator *this = impl_from_IEnumString(iface);
  
      this->cur = 0;
      this->num_resets++;
  
      return S_OK;
  }
  
  static HRESULT WINAPI string_enumerator_Skip(IEnumString *iface, ULONG num)
  {
      struct string_enumerator *this = impl_from_IEnumString(iface);
  
      this->cur += num;
  
      return S_OK;
  }
  
  static HRESULT WINAPI string_enumerator_Clone(IEnumString *iface, IEnumString **out)
  {
      *out = NULL;
      return E_NOTIMPL;
  }
  
  static IEnumStringVtbl string_enumerator_vtbl =
  {
      string_enumerator_QueryInterface,
      string_enumerator_AddRef,
      string_enumerator_Release,
      string_enumerator_Next,
      string_enumerator_Skip,
      string_enumerator_Reset,
      string_enumerator_Clone
  };
  
  static struct string_enumerator *impl_from_IACList(IACList *iface)
  {
      return CONTAINING_RECORD(iface, struct string_enumerator, IACList_iface);
  }
  
  static HRESULT WINAPI aclist_QueryInterface(IACList *iface, REFIID riid, void **ppv)
  {
      return string_enumerator_QueryInterface(&impl_from_IACList(iface)->IEnumString_iface, riid, ppv);
  }
  
  static ULONG WINAPI aclist_AddRef(IACList *iface)
  {
      return string_enumerator_AddRef(&impl_from_IACList(iface)->IEnumString_iface);
  }
  
  static ULONG WINAPI aclist_Release(IACList *iface)
  {
      return string_enumerator_Release(&impl_from_IACList(iface)->IEnumString_iface);
  }
  
  static HRESULT WINAPI aclist_Expand(IACList *iface, const WCHAR *expand)
  {
      struct string_enumerator *this = impl_from_IACList(iface);
  
      /* see what we get called with and how many times,
         don't actually do any expansion of the strings */
      memcpy(this->last_expand, expand, min((lstrlenW(expand) + 1)*sizeof(WCHAR), sizeof(this->last_expand)));
      this->last_expand[ARRAY_SIZE(this->last_expand) - 1] = '\0';
      this->num_expand++;
  
      return S_OK;
  }
  
  static IACListVtbl aclist_vtbl =
  {
      aclist_QueryInterface,
      aclist_AddRef,
      aclist_Release,
      aclist_Expand
  };
  
  static HRESULT string_enumerator_create(void **ppv, WCHAR **suggestions, int count)
  {
      struct string_enumerator *object;
  
      object = heap_alloc_zero(sizeof(*object));
      object->IEnumString_iface.lpVtbl = &string_enumerator_vtbl;
      object->IACList_iface.lpVtbl = &aclist_vtbl;
      object->ref = 1;
      object->data = suggestions;
      object->data_len = count;
      object->cur = 0;
  
      *ppv = &object->IEnumString_iface;
  
      return S_OK;
  }
  
  static void dispatch_messages(void)
  {
      MSG msg;
      Sleep(33);
      while (PeekMessageA(&msg, 0, 0, 0, PM_REMOVE))
      {
          TranslateMessage(&msg);
          DispatchMessageA(&msg);
      }
  }
  
  #define check_dropdown(acdropdown, hwnd_edit, list, list_num) check_dropdown_(__FILE__, __LINE__, acdropdown, hwnd_edit, list, list_num)
  static void check_dropdown_(const char *file, UINT line, IAutoCompleteDropDown *acdropdown, HWND hwnd_edit, WCHAR **list, UINT list_num)
  {
      UINT i;
      DWORD flags = 0;
      LPWSTR str;
      HRESULT hr;
  
      hr = IAutoCompleteDropDown_GetDropDownStatus(acdropdown, &flags, &str);
      ok_(file, line)(hr == S_OK, "IAutoCompleteDropDown_GetDropDownStatus failed: %lx\n", hr);
      if (hr != S_OK) return;
      if (list_num) ok_(file, line)(flags & ACDD_VISIBLE, "AutoComplete DropDown not visible\n");
      else
      {
          ok_(file, line)(!(flags & ACDD_VISIBLE), "AutoComplete DropDown visible\n");
          return;
      }
      ok_(file, line)(str == NULL, "Expected (null), got %s\n", wine_dbgstr_w(str));
      if (str)
      {
          CoTaskMemFree(str);
          return;
      }
  
      for (i = 0; i <= list_num; i++)
      {
          flags = 0;
          SendMessageW(hwnd_edit, WM_KEYDOWN, VK_DOWN, 0);
          SendMessageW(hwnd_edit, WM_KEYUP, VK_DOWN, 0xc0000000);
          hr = IAutoCompleteDropDown_GetDropDownStatus(acdropdown, &flags, &str);
          ok_(file, line)(hr == S_OK, "IAutoCompleteDropDown_GetDropDownStatus failed: %lx\n", hr);
          ok_(file, line)(flags & ACDD_VISIBLE, "AutoComplete DropDown not visible\n");
          if (hr == S_OK)
          {
              if (i < list_num)
                  ok_(file, line)(str && !lstrcmpW(list[i], str), "Expected %s, got %s\n",
                                  wine_dbgstr_w(list[i]), wine_dbgstr_w(str));
              else
                  ok_(file, line)(str == NULL, "Expected (null), got %s\n", wine_dbgstr_w(str));
          }
          CoTaskMemFree(str);
      }
  }
  
  static void test_aclist_expand(HWND hwnd_edit, void *enumerator, IAutoCompleteDropDown *acdropdown)
  {
      struct string_enumerator *obj = (struct string_enumerator*)enumerator;
      static WCHAR str1[] = {'t','e','s','t',0};
      static WCHAR str1a[] = {'t','e','s','t','\\',0};
      static WCHAR str2[] = {'t','e','s','t','\\','f','o','o','\\','b','a','r','\\','b','a',0};
      static WCHAR str2a[] = {'t','e','s','t','\\','f','o','o','\\','b','a','r','\\',0};
      static WCHAR str2b[] = {'t','e','s','t','\\','f','o','o','\\','b','a','r','\\','b','a','z','_','b','b','q','\\',0};
      HRESULT hr;
      obj->num_resets = 0;
  
      ok(obj->num_expand == 0, "Expected 0 expansions, got %u\n", obj->num_expand);
      SendMessageW(hwnd_edit, WM_SETTEXT, 0, (LPARAM)str1);
      SendMessageW(hwnd_edit, EM_SETSEL, ARRAY_SIZE(str1) - 1, ARRAY_SIZE(str1) - 1);
      SendMessageW(hwnd_edit, WM_CHAR, '\\', 1);
      dispatch_messages();
      ok(obj->num_expand == 1, "Expected 1 expansion, got %u\n", obj->num_expand);
      ok(lstrcmpW(obj->last_expand, str1a) == 0, "Expected %s, got %s\n", wine_dbgstr_w(str1a), wine_dbgstr_w(obj->last_expand));
      ok(obj->num_resets == 1, "Expected 1 reset, got %u\n", obj->num_resets);
      SendMessageW(hwnd_edit, WM_SETTEXT, 0, (LPARAM)str2);
      SendMessageW(hwnd_edit, EM_SETSEL, ARRAY_SIZE(str2) - 1, ARRAY_SIZE(str2) - 1);
      SendMessageW(hwnd_edit, WM_CHAR, 'z', 1);
      dispatch_messages();
      ok(obj->num_expand == 2, "Expected 2 expansions, got %u\n", obj->num_expand);
      ok(lstrcmpW(obj->last_expand, str2a) == 0, "Expected %s, got %s\n", wine_dbgstr_w(str2a), wine_dbgstr_w(obj->last_expand));
      ok(obj->num_resets == 2, "Expected 2 resets, got %u\n", obj->num_resets);
      SetFocus(hwnd_edit);
      SendMessageW(hwnd_edit, WM_CHAR, '_', 1);
      SendMessageW(hwnd_edit, WM_CHAR, 'b', 1);
      SetFocus(0);
      SetFocus(hwnd_edit);
      SendMessageW(hwnd_edit, WM_CHAR, 'b', 1);
      SendMessageW(hwnd_edit, WM_CHAR, 'q', 1);
      dispatch_messages();
      ok(obj->num_expand == 2, "Expected 2 expansions, got %u\n", obj->num_expand);
      ok(obj->num_resets == 2, "Expected 2 resets, got %u\n", obj->num_resets);
      SendMessageW(hwnd_edit, WM_CHAR, '\\', 1);
      dispatch_messages();
      ok(obj->num_expand == 3, "Expected 3 expansions, got %u\n", obj->num_expand);
      ok(lstrcmpW(obj->last_expand, str2b) == 0, "Expected %s, got %s\n", wine_dbgstr_w(str2b), wine_dbgstr_w(obj->last_expand));
      ok(obj->num_resets == 3, "Expected 3 resets, got %u\n", obj->num_resets);
      SendMessageW(hwnd_edit, EM_SETSEL, ARRAY_SIZE(str1a) - 1, -1);
      SendMessageW(hwnd_edit, WM_CHAR, 'x', 1);
      SendMessageW(hwnd_edit, WM_CHAR, 'y', 1);
      dispatch_messages();
      ok(obj->num_expand == 4, "Expected 4 expansions, got %u\n", obj->num_expand);
      ok(lstrcmpW(obj->last_expand, str1a) == 0, "Expected %s, got %s\n", wine_dbgstr_w(str1a), wine_dbgstr_w(obj->last_expand));
      ok(obj->num_resets == 4, "Expected 4 resets, got %u\n", obj->num_resets);
      SendMessageW(hwnd_edit, EM_SETSEL, ARRAY_SIZE(str1) - 1, -1);
      SendMessageW(hwnd_edit, WM_CHAR, 'x', 1);
      dispatch_messages();
      ok(obj->num_expand == 4, "Expected 4 expansions, got %u\n", obj->num_expand);
      ok(obj->num_resets == 5, "Expected 5 resets, got %u\n", obj->num_resets);
      SendMessageW(hwnd_edit, WM_SETTEXT, 0, (LPARAM)str1a);
      SendMessageW(hwnd_edit, EM_SETSEL, ARRAY_SIZE(str1a) - 1, ARRAY_SIZE(str1a) - 1);
      SendMessageW(hwnd_edit, WM_CHAR, 'f', 1);
      dispatch_messages();
      ok(obj->num_expand == 5, "Expected 5 expansions, got %u\n", obj->num_expand);
      ok(lstrcmpW(obj->last_expand, str1a) == 0, "Expected %s, got %s\n", wine_dbgstr_w(str1a), wine_dbgstr_w(obj->last_expand));
      ok(obj->num_resets == 6, "Expected 6 resets, got %u\n", obj->num_resets);
      hr = IAutoCompleteDropDown_ResetEnumerator(acdropdown);
      ok(hr == S_OK, "IAutoCompleteDropDown_ResetEnumerator failed: %lx\n", hr);
      SendMessageW(hwnd_edit, WM_CHAR, 'o', 1);
      dispatch_messages();
      ok(obj->num_expand == 6, "Expected 6 expansions, got %u\n", obj->num_expand);
      ok(lstrcmpW(obj->last_expand, str1a) == 0, "Expected %s, got %s\n", wine_dbgstr_w(str1a), wine_dbgstr_w(obj->last_expand));
      ok(obj->num_resets == 7, "Expected 7 resets, got %u\n", obj->num_resets);
  }
  
  static void test_prefix_filtering(HWND hwnd_edit)
  {
      static WCHAR htt[]  = {'h','t','t',0};
      static WCHAR www[]  = {'w','w','w','.',0};
      static WCHAR str0[] = {'w','w','w','.','a','x',0};
      static WCHAR str1[] = {'h','t','t','p','s',':','/','/','w','w','w','.','a','c',0};
      static WCHAR str2[] = {'a','a',0};
      static WCHAR str3[] = {'a','b',0};
      static WCHAR str4[] = {'h','t','t','p',':','/','/','a','0',0};
      static WCHAR str5[] = {'h','t','t','p','s',':','/','/','h','t','a',0};
      static WCHAR str6[] = {'h','f','o','o',0};
      static WCHAR str7[] = {'h','t','t','p',':','/','/','w','w','w','.','a','d','d',0};
      static WCHAR str8[] = {'w','w','w','.','w','w','w','.','?',0};
      static WCHAR str9[] = {'h','t','t','p',':','/','/','a','b','c','.','a','a','.','c','o','m',0};
      static WCHAR str10[]= {'f','t','p',':','/','/','a','b','c',0};
      static WCHAR str11[]= {'f','i','l','e',':','/','/','a','a',0};
      static WCHAR str12[]= {'f','t','p',':','/','/','w','w','w','.','a','a',0};
      static WCHAR *suggestions[] = { str0, str1, str2, str3, str4, str5, str6, str7, str8, str9, str10, str11, str12 };
      static WCHAR *sorted1[] = { str4, str2, str3, str9, str1, str7, str0 };
      static WCHAR *sorted2[] = { str3, str9 };
      static WCHAR *sorted3[] = { str1, str7, str0 };
      static WCHAR *sorted4[] = { str6, str5 };
      static WCHAR *sorted5[] = { str5 };
      static WCHAR *sorted6[] = { str4, str9 };
      static WCHAR *sorted7[] = { str11, str10, str12 };
      IUnknown *enumerator;
      IAutoComplete2 *autocomplete;
      IAutoCompleteDropDown *acdropdown;
      WCHAR buffer[20];
      HRESULT hr;
  
      hr = CoCreateInstance(&CLSID_AutoComplete, NULL, CLSCTX_INPROC_SERVER, &IID_IAutoComplete2, (void**)&autocomplete);
      ok(hr == S_OK, "CoCreateInstance failed: %lx\n", hr);
  
      hr = IAutoComplete2_QueryInterface(autocomplete, &IID_IAutoCompleteDropDown, (LPVOID*)&acdropdown);
      ok(hr == S_OK, "No IAutoCompleteDropDown interface: %lx\n", hr);
  
      string_enumerator_create((void**)&enumerator, suggestions, ARRAY_SIZE(suggestions));
  
      hr = IAutoComplete2_SetOptions(autocomplete, ACO_FILTERPREFIXES | ACO_AUTOSUGGEST | ACO_AUTOAPPEND);
      ok(hr == S_OK, "IAutoComplete2_SetOptions failed: %lx\n", hr);
      hr = IAutoComplete2_Init(autocomplete, hwnd_edit, enumerator, NULL, NULL);
      ok(hr == S_OK, "IAutoComplete_Init failed: %lx\n", hr);
  
      SendMessageW(hwnd_edit, EM_SETSEL, 0, -1);
      SendMessageW(hwnd_edit, WM_CHAR, 'a', 1);
      dispatch_messages();
      SendMessageW(hwnd_edit, WM_GETTEXT, ARRAY_SIZE(buffer), (LPARAM)buffer);
      ok(lstrcmpW(str4 + 7, buffer) == 0, "Expected %s, got %s\n", wine_dbgstr_w(str4 + 7), wine_dbgstr_w(buffer));
      check_dropdown(acdropdown, hwnd_edit, sorted1, ARRAY_SIZE(sorted1));
  
      SendMessageW(hwnd_edit, EM_SETSEL, 0, -1);
      SendMessageW(hwnd_edit, WM_CHAR, 'a', 1);
      SendMessageW(hwnd_edit, WM_CHAR, 'b', 1);
      dispatch_messages();
      SendMessageW(hwnd_edit, WM_GETTEXT, ARRAY_SIZE(buffer), (LPARAM)buffer);
      ok(lstrcmpW(str3, buffer) == 0, "Expected %s, got %s\n", wine_dbgstr_w(str3), wine_dbgstr_w(buffer));
      check_dropdown(acdropdown, hwnd_edit, sorted2, ARRAY_SIZE(sorted2));
      SendMessageW(hwnd_edit, EM_SETSEL, 0, -1);
      SendMessageW(hwnd_edit, WM_CHAR, 'a', 1);
      SendMessageW(hwnd_edit, WM_CHAR, 'b', 1);
      SendMessageW(hwnd_edit, WM_CHAR, 'c', 1);
      dispatch_messages();
      SendMessageW(hwnd_edit, WM_GETTEXT, ARRAY_SIZE(buffer), (LPARAM)buffer);
      ok(lstrcmpW(str9 + 7, buffer) == 0, "Expected %s, got %s\n", wine_dbgstr_w(str9 + 7), wine_dbgstr_w(buffer));
  
      SendMessageW(hwnd_edit, WM_SETTEXT, 0, (LPARAM)www);
      SendMessageW(hwnd_edit, EM_SETSEL, ARRAY_SIZE(www) - 1, ARRAY_SIZE(www) - 1);
      SendMessageW(hwnd_edit, WM_CHAR, 'a', 1);
      dispatch_messages();
      SendMessageW(hwnd_edit, WM_GETTEXT, ARRAY_SIZE(buffer), (LPARAM)buffer);
      ok(lstrcmpW(str1 + 8, buffer) == 0, "Expected %s, got %s\n", wine_dbgstr_w(str1 + 8), wine_dbgstr_w(buffer));
      check_dropdown(acdropdown, hwnd_edit, sorted3, ARRAY_SIZE(sorted3));
      SendMessageW(hwnd_edit, WM_SETTEXT, 0, (LPARAM)www);
      SendMessageW(hwnd_edit, EM_SETSEL, ARRAY_SIZE(www) - 1, ARRAY_SIZE(www) - 1);
      SendMessageW(hwnd_edit, WM_CHAR, 'w', 1);
      dispatch_messages();
      SendMessageW(hwnd_edit, WM_GETTEXT, ARRAY_SIZE(buffer), (LPARAM)buffer);
      ok(lstrcmpW(str8, buffer) == 0, "Expected %s, got %s\n", wine_dbgstr_w(str8), wine_dbgstr_w(buffer));
  
      SendMessageW(hwnd_edit, EM_SETSEL, 0, -1);
      SendMessageW(hwnd_edit, WM_CHAR, 'h', 1);
      dispatch_messages();
      SendMessageW(hwnd_edit, WM_GETTEXT, ARRAY_SIZE(buffer), (LPARAM)buffer);
      ok(lstrcmpW(str6, buffer) == 0, "Expected %s, got %s\n", wine_dbgstr_w(str6), wine_dbgstr_w(buffer));
      check_dropdown(acdropdown, hwnd_edit, sorted4, ARRAY_SIZE(sorted4));
      SendMessageW(hwnd_edit, WM_CHAR, 't', 1);
      SendMessageW(hwnd_edit, WM_GETTEXT, ARRAY_SIZE(buffer), (LPARAM)buffer);
      ok(lstrcmpW(str5 + 8, buffer) == 0, "Expected %s, got %s\n", wine_dbgstr_w(str5 + 8), wine_dbgstr_w(buffer));
      check_dropdown(acdropdown, hwnd_edit, sorted5, ARRAY_SIZE(sorted5));
      SendMessageW(hwnd_edit, WM_CHAR, 't', 1);
      SendMessageW(hwnd_edit, WM_GETTEXT, ARRAY_SIZE(buffer), (LPARAM)buffer);
      ok(lstrcmpW(htt, buffer) == 0, "Expected %s, got %s\n", wine_dbgstr_w(htt), wine_dbgstr_w(buffer));
      check_dropdown(acdropdown, hwnd_edit, NULL, 0);
      SendMessageW(hwnd_edit, WM_CHAR, 'p', 1);
      SendMessageW(hwnd_edit, WM_CHAR, ':', 1);
      SendMessageW(hwnd_edit, WM_CHAR, '/', 1);
      SendMessageW(hwnd_edit, WM_CHAR, '/', 1);
      SendMessageW(hwnd_edit, WM_CHAR, 'a', 1);
      dispatch_messages();
      SendMessageW(hwnd_edit, WM_GETTEXT, ARRAY_SIZE(buffer), (LPARAM)buffer);
      ok(lstrcmpW(str4, buffer) == 0, "Expected %s, got %s\n", wine_dbgstr_w(str4), wine_dbgstr_w(buffer));
      check_dropdown(acdropdown, hwnd_edit, sorted6, ARRAY_SIZE(sorted6));
      SendMessageW(hwnd_edit, EM_SETSEL, 0, 2);
      SendMessageW(hwnd_edit, WM_CHAR, 'H', 1);
      dispatch_messages();
      check_dropdown(acdropdown, hwnd_edit, NULL, 0);
      SendMessageW(hwnd_edit, WM_CHAR, 't', 1);
      dispatch_messages();
      check_dropdown(acdropdown, hwnd_edit, sorted6, ARRAY_SIZE(sorted6));
  
      SendMessageW(hwnd_edit, EM_SETSEL, 0, -1);
      SendMessageW(hwnd_edit, WM_CHAR, 'F', 1);
      dispatch_messages();
      SendMessageW(hwnd_edit, WM_GETTEXT, ARRAY_SIZE(buffer), (LPARAM)buffer);
      check_dropdown(acdropdown, hwnd_edit, sorted7, ARRAY_SIZE(sorted7));
      SendMessageW(hwnd_edit, WM_CHAR, 'i', 1);
      SendMessageW(hwnd_edit, WM_CHAR, 'L', 1);
      SendMessageW(hwnd_edit, WM_GETTEXT, ARRAY_SIZE(buffer), (LPARAM)buffer);
      check_dropdown(acdropdown, hwnd_edit, sorted7, 1);
  
      IAutoCompleteDropDown_Release(acdropdown);
      IAutoComplete2_Release(autocomplete);
      IUnknown_Release(enumerator);
  }
  
  static void test_custom_source(void)
  {
      static WCHAR str_alpha[] = {'t','e','s','t','1',0};
      static WCHAR str_alpha2[] = {'t','e','s','t','2',0};
      static WCHAR str_beta[] = {'a','u','t','o',' ','c','o','m','p','l','e','t','e',0};
      static WCHAR str_au[] = {'a','u',0};
      static WCHAR str_aut[] = {'a','u','t',0};
      static WCHAR *suggestions[] = { str_alpha, str_alpha2, str_beta };
      struct string_enumerator *obj;
      IUnknown *enumerator;
      IAutoComplete2 *autocomplete;
      IAutoCompleteDropDown *acdropdown;
      HWND hwnd_edit;
      DWORD flags = 0;
      WCHAR buffer[20];
      HRESULT hr;
  
      ShowWindow(hMainWnd, SW_SHOW);
  
      hwnd_edit = CreateWindowA("Edit", "", WS_OVERLAPPED | WS_VISIBLE | WS_CHILD | WS_BORDER, 50, 5, 200, 20, hMainWnd, 0, NULL, 0);
  
      hr = CoCreateInstance(&CLSID_AutoComplete, NULL, CLSCTX_INPROC_SERVER, &IID_IAutoComplete2, (void**)&autocomplete);
      ok(hr == S_OK, "CoCreateInstance failed: %lx\n", hr);
  
      hr = IAutoComplete2_QueryInterface(autocomplete, &IID_IAutoCompleteDropDown, (LPVOID*)&acdropdown);
      ok(hr == S_OK, "No IAutoCompleteDropDown interface: %lx\n", hr);
  
      string_enumerator_create((void**)&enumerator, suggestions, ARRAY_SIZE(suggestions));
      obj = (struct string_enumerator*)enumerator;
  
      hr = IAutoComplete2_SetOptions(autocomplete, ACO_AUTOSUGGEST | ACO_AUTOAPPEND);
      ok(hr == S_OK, "IAutoComplete2_SetOptions failed: %lx\n", hr);
      hr = IAutoCompleteDropDown_ResetEnumerator(acdropdown);
      ok(hr == S_OK, "IAutoCompleteDropDown_ResetEnumerator failed: %lx\n", hr);
      hr = IAutoComplete2_Init(autocomplete, hwnd_edit, enumerator, NULL, NULL);
      ok(hr == S_OK, "IAutoComplete_Init failed: %lx\n", hr);
  
      SetFocus(hwnd_edit);
      SendMessageW(hwnd_edit, WM_CHAR, 'a', 1);
      SendMessageW(hwnd_edit, WM_CHAR, 'u', 1);
      dispatch_messages();
      SendMessageW(hwnd_edit, WM_GETTEXT, ARRAY_SIZE(buffer), (LPARAM)buffer);
      ok(lstrcmpW(str_beta, buffer) == 0, "Expected %s, got %s\n", wine_dbgstr_w(str_beta), wine_dbgstr_w(buffer));
      ok(obj->num_resets == 1, "Expected 1 reset, got %u\n", obj->num_resets);
      SendMessageW(hwnd_edit, EM_SETSEL, 0, -1);
      SendMessageW(hwnd_edit, WM_CHAR, '\b', 1);
      dispatch_messages();
      SendMessageW(hwnd_edit, WM_GETTEXT, ARRAY_SIZE(buffer), (LPARAM)buffer);
      ok(buffer[0] == '\0', "Expected empty string, got %s\n", wine_dbgstr_w(buffer));
      ok(obj->num_resets == 1, "Expected 1 reset, got %u\n", obj->num_resets);
      hr = IAutoCompleteDropDown_ResetEnumerator(acdropdown);
      ok(hr == S_OK, "IAutoCompleteDropDown_ResetEnumerator failed: %lx\n", hr);
      ok(obj->num_resets == 1, "Expected 1 reset, got %u\n", obj->num_resets);
      obj->num_resets = 0;
  
      /* hijack the window procedure */
      HijackerWndProc_prev = (WNDPROC)SetWindowLongPtrW(hwnd_edit, GWLP_WNDPROC, (LONG_PTR)HijackerWndProc);
      SendMessageW(hwnd_edit, WM_GETTEXT, ARRAY_SIZE(buffer), (LPARAM)buffer);
      ok(lstrcmpW(HijackerWndProc_txt, buffer) == 0, "Expected %s, got %s\n", wine_dbgstr_w(HijackerWndProc_txt), wine_dbgstr_w(buffer));
  
      SendMessageW(hwnd_edit, WM_CHAR, 'a', 1);
      SendMessageW(hwnd_edit, WM_CHAR, 'u', 1);
      SetWindowLongPtrW(hwnd_edit, GWLP_WNDPROC, (LONG_PTR)HijackerWndProc_prev);
      dispatch_messages();
      SendMessageW(hwnd_edit, WM_GETTEXT, ARRAY_SIZE(buffer), (LPARAM)buffer);
      ok(lstrcmpW(str_au, buffer) == 0, "Expected %s, got %s\n", wine_dbgstr_w(str_au), wine_dbgstr_w(buffer));
      ok(obj->num_resets == 1, "Expected 1 reset, got %u\n", obj->num_resets);
      SendMessageW(hwnd_edit, EM_SETSEL, 0, -1);
      SendMessageW(hwnd_edit, WM_CHAR, '\b', 1);
      dispatch_messages();
      SendMessageW(hwnd_edit, WM_GETTEXT, ARRAY_SIZE(buffer), (LPARAM)buffer);
      ok(buffer[0] == '\0', "Expected empty string, got %s\n", wine_dbgstr_w(buffer));
      hr = IAutoCompleteDropDown_ResetEnumerator(acdropdown);
      ok(hr == S_OK, "IAutoCompleteDropDown_ResetEnumerator failed: %lx\n", hr);
  
      HijackerWndProc_prev = (WNDPROC)SetWindowLongPtrW(hwnd_edit, GWLP_WNDPROC, (LONG_PTR)HijackerWndProc2);
      SendMessageW(hwnd_edit, WM_CHAR, 'a', 1);
      SendMessageW(hwnd_edit, WM_CHAR, 'u', 1);
      SetWindowLongPtrW(hwnd_edit, GWLP_WNDPROC, (LONG_PTR)HijackerWndProc_prev);
      dispatch_messages();
      SendMessageW(hwnd_edit, WM_GETTEXT, ARRAY_SIZE(buffer), (LPARAM)buffer);
      ok(lstrcmpW(str_beta, buffer) == 0, "Expected %s, got %s\n", wine_dbgstr_w(str_beta), wine_dbgstr_w(buffer));
      ok(obj->num_resets == 2, "Expected 2 resets, got %u\n", obj->num_resets);
      /* end of hijacks */
  
      hr = IAutoCompleteDropDown_GetDropDownStatus(acdropdown, &flags, NULL);
      ok(hr == S_OK, "IAutoCompleteDropDown_GetDropDownStatus failed: %lx\n", hr);
      ok(flags & ACDD_VISIBLE, "AutoComplete DropDown should be visible\n");
      SendMessageW(hwnd_edit, WM_SETTEXT, 0, (LPARAM)str_au);
      dispatch_messages();
      hr = IAutoCompleteDropDown_GetDropDownStatus(acdropdown, &flags, NULL);
      ok(hr == S_OK, "IAutoCompleteDropDown_GetDropDownStatus failed: %lx\n", hr);
      ok(!(flags & ACDD_VISIBLE), "AutoComplete DropDown should have been hidden\n");
      SendMessageW(hwnd_edit, WM_SETTEXT, 0, (LPARAM)str_aut);
      dispatch_messages();
      hr = IAutoCompleteDropDown_GetDropDownStatus(acdropdown, &flags, NULL);
      ok(hr == S_OK, "IAutoCompleteDropDown_GetDropDownStatus failed: %lx\n", hr);
      ok(!(flags & ACDD_VISIBLE), "AutoComplete DropDown should be hidden\n");
      SendMessageW(hwnd_edit, WM_GETTEXT, ARRAY_SIZE(buffer), (LPARAM)buffer);
      ok(lstrcmpW(str_aut, buffer) == 0, "Expected %s, got %s\n", wine_dbgstr_w(str_aut), wine_dbgstr_w(buffer));
  
      test_aclist_expand(hwnd_edit, enumerator, acdropdown);
      obj->num_resets = 0;
  
      hr = IAutoCompleteDropDown_ResetEnumerator(acdropdown);
      ok(hr == S_OK, "IAutoCompleteDropDown_ResetEnumerator failed: %lx\n", hr);
      SendMessageW(hwnd_edit, WM_CHAR, 'x', 1);
      dispatch_messages();
      ok(obj->num_resets == 1, "Expected 1 reset, got %u\n", obj->num_resets);
      SendMessageW(hwnd_edit, WM_CHAR, 'x', 1);
      dispatch_messages();
      ok(obj->num_resets == 1, "Expected 1 reset, got %u\n", obj->num_resets);
  
      IAutoCompleteDropDown_Release(acdropdown);
      IAutoComplete2_Release(autocomplete);
      IUnknown_Release(enumerator);
  
      test_prefix_filtering(hwnd_edit);
  
      ShowWindow(hMainWnd, SW_HIDE);
      DestroyWindow(hwnd_edit);
  }
  
  START_TEST(autocomplete)
  {
      HRESULT r;
      MSG msg;
      IAutoComplete* ac;
      RECT win_rect;
      POINT orig_pos;
  
      r = CoInitialize(NULL);
      ok(r == S_OK, "CoInitialize failed (0x%08lx). Tests aborted.\n", r);
      if (r != S_OK)
          return;
  
      createMainWnd();
      ok(hMainWnd != NULL, "Failed to create parent window. Tests aborted.\n");
      if (!hMainWnd) return;
  
      /* Move the cursor away from the dropdown listbox */
      GetWindowRect(hMainWnd, &win_rect);
      GetCursorPos(&orig_pos);
      SetCursorPos(win_rect.left, win_rect.top);
  
      test_invalid_init();
      ac = test_init();
      if (!ac)
          goto cleanup;
      test_killfocus();
  
      test_custom_source();
  
      PostQuitMessage(0);
      while(GetMessageA(&msg,0,0,0)) {
          TranslateMessage(&msg);
          DispatchMessageA(&msg);
      }
  
      IAutoComplete_Release(ac);
  
  cleanup:
      SetCursorPos(orig_pos.x, orig_pos.y);
      DestroyWindow(hEdit);
      DestroyWindow(hMainWnd);
  
      CoUninitialize();
  }
  