* Check or uncheck a menu item.
 *
 * PARAMS
 *  hMenu  [I] Menu holding menu item
 *  uID    [I] ID of menu item to check/uncheck
 *  bCheck [I] Whether to check (TRUE) or uncheck (FALSE) the item.
 *
 * RETURNS
 *  The return code from CheckMenuItem.
 */
DWORD WINAPI SHCheckMenuItem(HMENU hMenu, UINT uID, BOOL bCheck)
{
  return CheckMenuItem(hMenu, uID, bCheck ? MF_CHECKED : MF_UNCHECKED);
}

/*************************************************************************
 *      @	[SHLWAPI.183]
 *
 * Register a window class if it isn't already.
 *
 * PARAMS
 *  lpWndClass [I] Window class to register
 *
 * RETURNS
 *  The result of the RegisterClassA call.
 */
DWORD WINAPI SHRegisterClassA(WNDCLASSA *wndclass)
{
  WNDCLASSA wca;
  if (GetClassInfoA(wndclass->hInstance, wndclass->lpszClassName, &wca))
    return TRUE;
  return (DWORD)RegisterClassA(wndclass);
}

/*************************************************************************
 *      @	[SHLWAPI.186]
 */
BOOL WINAPI SHSimulateDrop(IDropTarget *pDrop, IDataObject *pDataObj,
                           DWORD grfKeyState, PPOINTL lpPt, DWORD* pdwEffect)
{
  DWORD dwEffect = DROPEFFECT_LINK | DROPEFFECT_MOVE | DROPEFFECT_COPY;
  POINTL pt = { 0, 0 };

  if (!lpPt)
    lpPt = &pt;

  if (!pdwEffect)
    pdwEffect = &dwEffect;

  IDropTarget_DragEnter(pDrop, pDataObj, grfKeyState, *lpPt, pdwEffect);

  if (*pdwEffect)
    return IDropTarget_Drop(pDrop, pDataObj, grfKeyState, *lpPt, pdwEffect);

  IDropTarget_DragLeave(pDrop);
  return TRUE;
}

/*************************************************************************
 *      @	[SHLWAPI.187]
 *
 * Call IPersistPropertyBag_Load() on an object.
 *
 * PARAMS
 *  lpUnknown [I] Object supporting the IPersistPropertyBag interface
 *  lpPropBag [O] Destination for loaded IPropertyBag
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: An HRESULT error code, or E_FAIL if lpUnknown is NULL.
 */
DWORD WINAPI SHLoadFromPropertyBag(IUnknown *lpUnknown, IPropertyBag* lpPropBag)
{
  IPersistPropertyBag* lpPPBag;
  HRESULT hRet = E_FAIL;

  TRACE("(%p,%p)\n", lpUnknown, lpPropBag);

  if (lpUnknown)
  {
    hRet = IUnknown_QueryInterface(lpUnknown, &IID_IPersistPropertyBag,
                                   (void**)&lpPPBag);
    if (SUCCEEDED(hRet) && lpPPBag)
    {
      hRet = IPersistPropertyBag_Load(lpPPBag, lpPropBag, NULL);
      IPersistPropertyBag_Release(lpPPBag);
    }
  }
  return hRet;
}

/*************************************************************************
 * @  [SHLWAPI.188]
 *
 * Call IOleControlSite_TranslateAccelerator()  on an object.
 *
 * PARAMS
 *  lpUnknown   [I] Object supporting the IOleControlSite interface.
 *  lpMsg       [I] Key message to be processed.
 *  dwModifiers [I] Flags containing the state of the modifier keys.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: An HRESULT error code, or E_INVALIDARG if lpUnknown is NULL.
 */
HRESULT WINAPI IUnknown_TranslateAcceleratorOCS(IUnknown *lpUnknown, LPMSG lpMsg, DWORD dwModifiers)
{
  IOleControlSite* lpCSite = NULL;
  HRESULT hRet = E_INVALIDARG;

  TRACE("(%p,%p,0x%08lx)\n", lpUnknown, lpMsg, dwModifiers);
  if (lpUnknown)
  {
    hRet = IUnknown_QueryInterface(lpUnknown, &IID_IOleControlSite,
                                   (void**)&lpCSite);
    if (SUCCEEDED(hRet) && lpCSite)
    {
      hRet = IOleControlSite_TranslateAccelerator(lpCSite, lpMsg, dwModifiers);
      IOleControlSite_Release(lpCSite);
    }
  }
  return hRet;
}


/*************************************************************************
 * @  [SHLWAPI.189]
 *
 * Call IOleControlSite_GetExtendedControl() on an object.
 *
 * PARAMS
 *  lpUnknown [I] Object supporting the IOleControlSite interface.
 *  lppDisp   [O] Destination for resulting IDispatch.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: An HRESULT error code, or E_FAIL if lpUnknown is NULL.
 */
DWORD WINAPI IUnknown_OnFocusOCS(IUnknown *lpUnknown, IDispatch** lppDisp)
{
  IOleControlSite* lpCSite = NULL;
  HRESULT hRet = E_FAIL;

  TRACE("(%p,%p)\n", lpUnknown, lppDisp);
  if (lpUnknown)
  {
    hRet = IUnknown_QueryInterface(lpUnknown, &IID_IOleControlSite,
                                   (void**)&lpCSite);
    if (SUCCEEDED(hRet) && lpCSite)
    {
      hRet = IOleControlSite_GetExtendedControl(lpCSite, lppDisp);
      IOleControlSite_Release(lpCSite);
    }
  }
  return hRet;
}

/*************************************************************************
 * @    [SHLWAPI.190]
 */
HRESULT WINAPI IUnknown_HandleIRestrict(LPUNKNOWN lpUnknown, PVOID lpArg1,
                                        PVOID lpArg2, PVOID lpArg3, PVOID lpArg4)
{
  /* FIXME: {D12F26B2-D90A-11D0-830D-00AA005B4383} - What object does this represent? */
  static const DWORD service_id[] = { 0xd12f26b2, 0x11d0d90a, 0xaa000d83, 0x83435b00 };
  /* FIXME: {D12F26B1-D90A-11D0-830D-00AA005B4383} - Also Unknown/undocumented */
  static const DWORD function_id[] = { 0xd12f26b1, 0x11d0d90a, 0xaa000d83, 0x83435b00 };
  HRESULT hRet = E_INVALIDARG;
  LPUNKNOWN lpUnkInner = NULL; /* FIXME: Real type is unknown */

  TRACE("(%p,%p,%p,%p,%p)\n", lpUnknown, lpArg1, lpArg2, lpArg3, lpArg4);

  if (lpUnknown && lpArg4)
  {
     hRet = IUnknown_QueryService(lpUnknown, (REFGUID)service_id,
                                  (REFGUID)function_id, (void**)&lpUnkInner);

     if (SUCCEEDED(hRet) && lpUnkInner)
     {
       /* FIXME: The type of service object requested is unknown, however
	* testing shows that its first method is called with 4 parameters.
	* Fake this by using IParseDisplayName_ParseDisplayName since the
	* signature and position in the vtable matches our unknown object type.
	*/
       hRet = IParseDisplayName_ParseDisplayName((LPPARSEDISPLAYNAME)lpUnkInner,
                                                 lpArg1, lpArg2, lpArg3, lpArg4);
       IUnknown_Release(lpUnkInner);
     }
  }
  return hRet;
}

/*************************************************************************
 * @    [SHLWAPI.192]
 *
 * Get a sub-menu from a menu item.
 *
 * PARAMS
 *  hMenu [I] Menu to get sub-menu from
 *  uID   [I] ID of menu item containing sub-menu
 *
 * RETURNS
 *  The sub-menu of the item, or a NULL handle if any parameters are invalid.
 */
HMENU WINAPI SHGetMenuFromID(HMENU hMenu, UINT uID)
{
  MENUITEMINFOW mi;

  TRACE("(%p,%u)\n", hMenu, uID);

  mi.cbSize = sizeof(mi);
  mi.fMask = MIIM_SUBMENU;

  if (!GetMenuItemInfoW(hMenu, uID, FALSE, &mi))
    return NULL;

  return mi.hSubMenu;
}

/*************************************************************************
 *      @	[SHLWAPI.193]
 *
 * Get the color depth of the primary display.
 *
 * PARAMS
 *  None.
 *
 * RETURNS
 *  The color depth of the primary display.
 */
DWORD WINAPI SHGetCurColorRes()
{
    HDC hdc;
    DWORD ret;

    TRACE("()\n");

    hdc = GetDC(0);
    ret = GetDeviceCaps(hdc, BITSPIXEL) * GetDeviceCaps(hdc, PLANES);
    ReleaseDC(0, hdc);
    return ret;
}

/*************************************************************************
 *      @	[SHLWAPI.194]
 *
 * Wait for a message to arrive, with a timeout.
 *
 * PARAMS
 *  hand      [I] Handle to query
 *  dwTimeout [I] Timeout in ticks or INFINITE to never timeout
 *
 * RETURNS
 *  STATUS_TIMEOUT if no message is received before dwTimeout ticks passes.
 *  Otherwise returns the value from MsgWaitForMultipleObjectsEx when a
 *  message is available.
 */
DWORD WINAPI SHWaitForSendMessageThread(HANDLE hand, DWORD dwTimeout)
{
  DWORD dwEndTicks = GetTickCount() + dwTimeout;
  DWORD dwRet;

  while ((dwRet = MsgWaitForMultipleObjectsEx(1, &hand, dwTimeout, QS_SENDMESSAGE, 0)) == 1)
  {
    MSG msg;

    PeekMessageW(&msg, NULL, 0, 0, PM_NOREMOVE);

    if (dwTimeout != INFINITE)
    {
        if ((int)(dwTimeout = dwEndTicks - GetTickCount()) <= 0)
            return WAIT_TIMEOUT;
    }
  }

  return dwRet;
}

/*************************************************************************
 *      @       [SHLWAPI.195]
 *
 * Determine if a shell folder can be expanded.
 *
 * PARAMS
 *  lpFolder [I] Parent folder containing the object to test.
 *  pidl     [I] Id of the object to test.
 *
 * RETURNS
 *  Success: S_OK, if the object is expandable, S_FALSE otherwise.
 *  Failure: E_INVALIDARG, if any argument is invalid.
 *
 * NOTES
 *  If the object to be tested does not expose the IQueryInfo() interface it
 *  will not be identified as an expandable folder.
 */
HRESULT WINAPI SHIsExpandableFolder(LPSHELLFOLDER lpFolder, LPCITEMIDLIST pidl)
{
  HRESULT hRet = E_INVALIDARG;
  IQueryInfo *lpInfo;

  if (lpFolder && pidl)
  {
    hRet = IShellFolder_GetUIObjectOf(lpFolder, NULL, 1, &pidl, &IID_IQueryInfo,
                                      NULL, (void**)&lpInfo);
    if (FAILED(hRet))
      hRet = S_FALSE; /* Doesn't expose IQueryInfo */
    else
    {
      DWORD dwFlags = 0;

      /* MSDN states of IQueryInfo_GetInfoFlags() that "This method is not
       * currently used". Really? You wouldn't be holding out on me would you?
       */
      hRet = IQueryInfo_GetInfoFlags(lpInfo, &dwFlags);

      if (SUCCEEDED(hRet))
      {
        /* 0x2 is an undocumented flag apparently indicating expandability */
        hRet = dwFlags & 0x2 ? S_OK : S_FALSE;
      }

      IQueryInfo_Release(lpInfo);
    }
  }
  return hRet;
}

/*************************************************************************
 *      @       [SHLWAPI.197]
 *
 * Blank out a region of text by drawing the background only.
 *
 * PARAMS
 *  hDC   [I] Device context to draw in
 *  pRect [I] Area to draw in
 *  cRef  [I] Color to draw in
 *
 * RETURNS
 *  Nothing.
 */
DWORD WINAPI SHFillRectClr(HDC hDC, LPCRECT pRect, COLORREF cRef)
{
    COLORREF cOldColor = SetBkColor(hDC, cRef);
    ExtTextOutA(hDC, 0, 0, ETO_OPAQUE, pRect, 0, 0, 0);
    SetBkColor(hDC, cOldColor);
    return 0;
}

/*************************************************************************
 *      @	[SHLWAPI.198]
 *
 * Return the value asociated with a key in a map.
 *
 * PARAMS
 *  lpKeys   [I] A list of keys of length iLen
 *  lpValues [I] A list of values associated with lpKeys, of length iLen
 *  iLen     [I] Length of both lpKeys and lpValues
 *  iKey     [I] The key value to look up in lpKeys
 *
 * RETURNS
 *  The value in lpValues associated with iKey, or -1 if iKey is not
 *  found in lpKeys.
 *
 * NOTES
 *  - If two elements in the map share the same key, this function returns
 *    the value closest to the start of the map
 *  - The native version of this function crashes if lpKeys or lpValues is NULL.
 */
int WINAPI SHSearchMapInt(const int *lpKeys, const int *lpValues, int iLen, int iKey)
{
  if (lpKeys && lpValues)
  {
    int i = 0;

    while (i < iLen)
    {
      if (lpKeys[i] == iKey)
        return lpValues[i]; /* Found */
      i++;
    }
  }
  return -1; /* Not found */
}


/*************************************************************************
 *      @	[SHLWAPI.199]
 *
 * Copy an interface pointer
 *
 * PARAMS
 *   lppDest   [O] Destination for copy
 *   lpUnknown [I] Source for copy
 *
 * RETURNS
 *  Nothing.
 */
VOID WINAPI IUnknown_Set(IUnknown **lppDest, IUnknown *lpUnknown)
{
  TRACE("(%p,%p)\n", lppDest, lpUnknown);

  if (lppDest)
    IUnknown_AtomicRelease(lppDest); /* Release existing interface */

  if (lpUnknown)
  {
    /* Copy */
    IUnknown_AddRef(lpUnknown);
    *lppDest = lpUnknown;
  }
}

/*************************************************************************
 *      @	[SHLWAPI.200]
 *
 */
HRESULT WINAPI MayQSForward(IUnknown* lpUnknown, PVOID lpReserved,
                            REFGUID riidCmdGrp, ULONG cCmds,
                            OLECMD *prgCmds, OLECMDTEXT* pCmdText)
{
  FIXME("(%p,%p,%p,%ld,%p,%p) - stub\n",
        lpUnknown, lpReserved, riidCmdGrp, cCmds, prgCmds, pCmdText);

  /* FIXME: Calls IsQSForward & IUnknown_QueryStatus */
  return DRAGDROP_E_NOTREGISTERED;
}

/*************************************************************************
 *      @	[SHLWAPI.201]
 *
 */
HRESULT WINAPI MayExecForward(IUnknown* lpUnknown, INT iUnk, REFGUID pguidCmdGroup,
                           D