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/*
 *	OLE2 library
 *
 *	Copyright 1995	Martin von Loewis
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 *      Copyright 1999  Francis Beaudet
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 *      Copyright 1999  Noel Borthwick
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 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 */

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#include "config.h"

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#include <assert.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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#define NONAMELESSUNION
#define NONAMELESSSTRUCT
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#include "windef.h"
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#include "winbase.h"
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#include "winerror.h"
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#include "wingdi.h"
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#include "winuser.h"
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#include "winnls.h"
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#include "winreg.h"
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#include "commctrl.h"
#include "ole2.h"
#include "ole2ver.h"
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#include "wownt32.h"
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#include "wine/winbase16.h"
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#include "wine/wingdi16.h"
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#include "wine/winuser16.h"
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#include "ole32_main.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(ole);
WINE_DECLARE_DEBUG_CHANNEL(accel);
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#define HICON_16(h32)		(LOWORD(h32))
#define HICON_32(h16)		((HICON)(ULONG_PTR)(h16))
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#define HINSTANCE_32(h16)	((HINSTANCE)(ULONG_PTR)(h16))
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/******************************************************************************
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 * These are static/global variables and internal data structures that the
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 * OLE module uses to maintain it's state.
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 */
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typedef struct tagDropTargetNode
{
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  HWND          hwndTarget;
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  IDropTarget*    dropTarget;
  struct tagDropTargetNode* prevDropTarget;
  struct tagDropTargetNode* nextDropTarget;
} DropTargetNode;

typedef struct tagTrackerWindowInfo
{
  IDataObject* dataObject;
  IDropSource* dropSource;
  DWORD        dwOKEffect;
  DWORD*       pdwEffect;
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  BOOL       trackingDone;
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  HRESULT      returnValue;

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  BOOL       escPressed;
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  HWND       curTargetHWND;	/* window the mouse is hovering over */
  HWND       curDragTargetHWND; /* might be a ancestor of curTargetHWND */
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  IDropTarget* curDragTarget;
} TrackerWindowInfo;
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typedef struct tagOleMenuDescriptor  /* OleMenuDescriptor */
{
  HWND               hwndFrame;         /* The containers frame window */
  HWND               hwndActiveObject;  /* The active objects window */
  OLEMENUGROUPWIDTHS mgw;               /* OLE menu group widths for the shared menu */
  HMENU              hmenuCombined;     /* The combined menu */
  BOOL               bIsServerItem;     /* True if the currently open popup belongs to the server */
} OleMenuDescriptor;

typedef struct tagOleMenuHookItem   /* OleMenu hook item in per thread hook list */
{
  DWORD tid;                /* Thread Id  */
  HANDLE hHeap;             /* Heap this is allocated from */
  HHOOK GetMsg_hHook;       /* message hook for WH_GETMESSAGE */
  HHOOK CallWndProc_hHook;  /* message hook for WH_CALLWNDPROC */
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  struct tagOleMenuHookItem *next;
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} OleMenuHookItem;

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static OleMenuHookItem *hook_list;
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/*
 * This is the lock count on the OLE library. It is controlled by the
 * OLEInitialize/OLEUninitialize methods.
 */
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static ULONG OLE_moduleLockCount = 0;

/*
 * Name of our registered window class.
 */
static const char OLEDD_DRAGTRACKERCLASS[] = "WineDragDropTracker32";

/*
 * This is the head of the Drop target container.
 */
static DropTargetNode* targetListHead = NULL;

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/******************************************************************************
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 * These are the prototypes of miscelaneous utility methods
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 */
static void OLEUTL_ReadRegistryDWORDValue(HKEY regKey, DWORD* pdwValue);

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/******************************************************************************
 * These are the prototypes of the utility methods used to manage a shared menu
 */
static void OLEMenu_Initialize();
static void OLEMenu_UnInitialize();
BOOL OLEMenu_InstallHooks( DWORD tid );
BOOL OLEMenu_UnInstallHooks( DWORD tid );
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OleMenuHookItem * OLEMenu_IsHookInstalled( DWORD tid );
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static BOOL OLEMenu_FindMainMenuIndex( HMENU hMainMenu, HMENU hPopupMenu, UINT *pnPos );
BOOL OLEMenu_SetIsServerMenu( HMENU hmenu, OleMenuDescriptor *pOleMenuDescriptor );
LRESULT CALLBACK OLEMenu_CallWndProc(INT code, WPARAM wParam, LPARAM lParam);
LRESULT CALLBACK OLEMenu_GetMsgProc(INT code, WPARAM wParam, LPARAM lParam);

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/******************************************************************************
 * These are the prototypes of the OLE Clipboard initialization methods (in clipboard.c)
 */
void OLEClipbrd_UnInitialize();
void OLEClipbrd_Initialize();

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/******************************************************************************
 * These are the prototypes of the utility methods used for OLE Drag n Drop
 */
static void            OLEDD_Initialize();
static void            OLEDD_UnInitialize();
static void            OLEDD_InsertDropTarget(
			 DropTargetNode* nodeToAdd);
static DropTargetNode* OLEDD_ExtractDropTarget(
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                         HWND hwndOfTarget);
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static DropTargetNode* OLEDD_FindDropTarget(
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                         HWND hwndOfTarget);
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static LRESULT WINAPI  OLEDD_DragTrackerWindowProc(
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			 HWND   hwnd,
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			 UINT   uMsg,
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			 WPARAM wParam,
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			 LPARAM   lParam);
static void OLEDD_TrackMouseMove(
                         TrackerWindowInfo* trackerInfo,
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			 POINT            mousePos,
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			 DWORD              keyState);
static void OLEDD_TrackStateChange(
                         TrackerWindowInfo* trackerInfo,
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			 POINT            mousePos,
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			 DWORD              keyState);
static DWORD OLEDD_GetButtonState();

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/******************************************************************************
 *		OleBuildVersion	[OLE2.1]
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 *		OleBuildVersion [OLE32.@]
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 */
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DWORD WINAPI OleBuildVersion(void)
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{
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    TRACE("Returning version %d, build %d.\n", rmm, rup);
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    return (rmm<<16)+rup;
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}

/***********************************************************************
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 *           OleInitialize       (OLE2.2)
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 *           OleInitialize       (OLE32.@)
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 */
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HRESULT WINAPI OleInitialize(LPVOID reserved)
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{
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  HRESULT hr;

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  TRACE("(%p)\n", reserved);
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  /*
   * The first duty of the OleInitialize is to initialize the COM libraries.
   */
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  hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
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  /*
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   * If the CoInitializeEx call failed, the OLE libraries can't be
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   * initialized.
   */
  if (FAILED(hr))
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    return hr;
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  /*
   * Then, it has to initialize the OLE specific modules.
   * This includes:
   *     Clipboard
   *     Drag and Drop
   *     Object linking and Embedding
   *     In-place activation
   */
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  if (OLE_moduleLockCount==0)
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  {
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    /*
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     * Initialize the libraries.
     */
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    TRACE("() - Initializing the OLE libraries\n");
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    /*
     * OLE Clipboard
     */
    OLEClipbrd_Initialize();

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    /*
     * Drag and Drop
     */
    OLEDD_Initialize();
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    /*
     * OLE shared menu
     */
    OLEMenu_Initialize();
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  }
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  /*
   * Then, we increase the lock count on the OLE module.
   */
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  OLE_moduleLockCount++;
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  return hr;
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}

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/******************************************************************************
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 *		CoGetCurrentProcess	[COMPOBJ.34]
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 *		CoGetCurrentProcess	[OLE32.@]
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 *
 * NOTES
 *   Is DWORD really the correct return type for this function?
 */
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DWORD WINAPI CoGetCurrentProcess(void)
{
	return GetCurrentProcessId();
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}

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/******************************************************************************
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 *		OleUninitialize	[OLE2.3]
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 *		OleUninitialize	[OLE32.@]
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 */
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void WINAPI OleUninitialize(void)
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{
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  TRACE("()\n");
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  /*
   * Decrease the lock count on the OLE module.
   */
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  OLE_moduleLockCount--;
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  /*
   * If we hit the bottom of the lock stack, free the libraries.
   */
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  if (OLE_moduleLockCount==0)
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  {
    /*
     * Actually free the libraries.
     */
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    TRACE("() - Freeing the last reference count\n");
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    /*
     * OLE Clipboard
     */
    OLEClipbrd_UnInitialize();

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    /*
     * Drag and Drop
     */
    OLEDD_UnInitialize();
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    /*
     * OLE shared menu
     */
    OLEMenu_UnInitialize();
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  }
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  /*
   * Then, uninitialize the COM libraries.
   */
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  CoUninitialize();
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}
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/******************************************************************************
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 *		CoRegisterMessageFilter	[OLE32.@]
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 */
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HRESULT WINAPI CoRegisterMessageFilter(
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    LPMESSAGEFILTER lpMessageFilter,	/* [in] Pointer to interface */
    LPMESSAGEFILTER *lplpMessageFilter	/* [out] Indirect pointer to prior instance if non-NULL */
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) {
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    FIXME("stub\n");
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    if (lplpMessageFilter) {
	*lplpMessageFilter = NULL;
    }
    return S_OK;
}
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/******************************************************************************
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 *		OleInitializeWOW	[OLE32.@]
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 */
HRESULT WINAPI OleInitializeWOW(DWORD x) {
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        FIXME("(0x%08lx),stub!\n",x);
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        return 0;
}
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/***********************************************************************
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 *           RegisterDragDrop (OLE32.@)
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 */
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HRESULT WINAPI RegisterDragDrop(
	HWND hwnd,
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	LPDROPTARGET pDropTarget)
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{
  DropTargetNode* dropTargetInfo;

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  TRACE("(%p,%p)\n", hwnd, pDropTarget);
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  /*
   * First, check if the window is already registered.
   */
  dropTargetInfo = OLEDD_FindDropTarget(hwnd);

  if (dropTargetInfo!=NULL)
    return DRAGDROP_E_ALREADYREGISTERED;

  /*
   * If it's not there, we can add it. We first create a node for it.
   */
  dropTargetInfo = HeapAlloc(GetProcessHeap(), 0, sizeof(DropTargetNode));

  if (dropTargetInfo==NULL)
    return E_OUTOFMEMORY;

  dropTargetInfo->hwndTarget     = hwnd;
  dropTargetInfo->prevDropTarget = NULL;
  dropTargetInfo->nextDropTarget = NULL;

  /*
   * Don't forget that this is an interface pointer, need to nail it down since
   * we keep a copy of it.
   */
  dropTargetInfo->dropTarget  = pDropTarget;
  IDropTarget_AddRef(dropTargetInfo->dropTarget);
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  OLEDD_InsertDropTarget(dropTargetInfo);

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	return S_OK;
}
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/***********************************************************************
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 *           RevokeDragDrop (OLE32.@)
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 */
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HRESULT WINAPI RevokeDragDrop(
	HWND hwnd)
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{
  DropTargetNode* dropTargetInfo;

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  TRACE("(%p)\n", hwnd);
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  /*
   * First, check if the window is already registered.
   */
  dropTargetInfo = OLEDD_ExtractDropTarget(hwnd);

  /*
   * If it ain't in there, it's an error.
   */
  if (dropTargetInfo==NULL)
    return DRAGDROP_E_NOTREGISTERED;

  /*
   * If it's in there, clean-up it's used memory and
   * references
   */
  IDropTarget_Release(dropTargetInfo->dropTarget);
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  HeapFree(GetProcessHeap(), 0, dropTargetInfo);
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	return S_OK;
}
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/***********************************************************************
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 *           OleRegGetUserType (OLE32.@)
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 *
 * This implementation of OleRegGetUserType ignores the dwFormOfType
 * parameter and always returns the full name of the object. This is
 * not too bad since this is the case for many objects because of the
 * way they are registered.
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 */
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HRESULT WINAPI OleRegGetUserType(
	REFCLSID clsid,
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	DWORD dwFormOfType,
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	LPOLESTR* pszUserType)
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{
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  char    keyName[60];
  DWORD   dwKeyType;
  DWORD   cbData;
  HKEY    clsidKey;
  LONG    hres;
  LPBYTE  buffer;
  HRESULT retVal;
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  /*
   * Initialize the out parameter.
   */
  *pszUserType = NULL;

  /*
   * Build the key name we're looking for
   */
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  sprintf( keyName, "CLSID\\{%08lx-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}\\",
           clsid->Data1, clsid->Data2, clsid->Data3,
           clsid->Data4[0], clsid->Data4[1], clsid->Data4[2], clsid->Data4[3],
           clsid->Data4[4], clsid->Data4[5], clsid->Data4[6], clsid->Data4[7] );
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  TRACE("(%s, %ld, %p)\n", keyName, dwFormOfType, pszUserType);
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  /*
   * Open the class id Key
   */
  hres = RegOpenKeyA(HKEY_CLASSES_ROOT,
		     keyName,
		     &clsidKey);

  if (hres != ERROR_SUCCESS)
    return REGDB_E_CLASSNOTREG;

  /*
   * Retrieve the size of the name string.
   */
  cbData = 0;

  hres = RegQueryValueExA(clsidKey,
			  "",
			  NULL,
			  &dwKeyType,
			  NULL,
			  &cbData);

  if (hres!=ERROR_SUCCESS)
  {
    RegCloseKey(clsidKey);
    return REGDB_E_READREGDB;
  }

  /*
   * Allocate a buffer for the registry value.
   */
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  *pszUserType = CoTaskMemAlloc(cbData*2);
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  if (*pszUserType==NULL)
  {
    RegCloseKey(clsidKey);
    return E_OUTOFMEMORY;
  }

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  buffer = HeapAlloc(GetProcessHeap(), 0, cbData);

  if (buffer == NULL)
  {
    RegCloseKey(clsidKey);
    CoTaskMemFree(*pszUserType);
    *pszUserType=NULL;
    return E_OUTOFMEMORY;
  }

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  hres = RegQueryValueExA(clsidKey,
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			  "",
			  NULL,
			  &dwKeyType,
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			  buffer,
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			  &cbData);

  RegCloseKey(clsidKey);
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  if (hres!=ERROR_SUCCESS)
  {
    CoTaskMemFree(*pszUserType);
    *pszUserType=NULL;

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    retVal = REGDB_E_READREGDB;
  }
  else
  {
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    MultiByteToWideChar( CP_ACP, 0, buffer, -1, *pszUserType, cbData /*FIXME*/ );
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    retVal = S_OK;
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  }
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  HeapFree(GetProcessHeap(), 0, buffer);
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  return retVal;
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}

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/***********************************************************************
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 * DoDragDrop [OLE32.@]
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 */
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HRESULT WINAPI DoDragDrop (
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  IDataObject *pDataObject,  /* [in] ptr to the data obj           */
  IDropSource* pDropSource,  /* [in] ptr to the source obj         */
  DWORD       dwOKEffect,    /* [in] effects allowed by the source */
  DWORD       *pdwEffect)    /* [out] ptr to effects of the source */
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{
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  TrackerWindowInfo trackerInfo;
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  HWND            hwndTrackWindow;
  MSG             msg;
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  TRACE("(DataObject %p, DropSource %p)\n", pDataObject, pDropSource);
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  /*
   * Setup the drag n drop tracking window.
   */
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  if (!IsValidInterface((LPUNKNOWN)pDropSource))
      return E_INVALIDARG;

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  trackerInfo.dataObject        = pDataObject;
  trackerInfo.dropSource        = pDropSource;
  trackerInfo.dwOKEffect        = dwOKEffect;
  trackerInfo.pdwEffect         = pdwEffect;
  trackerInfo.trackingDone      = FALSE;
  trackerInfo.escPressed        = FALSE;
  trackerInfo.curDragTargetHWND = 0;
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  trackerInfo.curTargetHWND     = 0;
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  trackerInfo.curDragTarget     = 0;

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  hwndTrackWindow = CreateWindowA(OLEDD_DRAGTRACKERCLASS,
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				    "TrackerWindow",
				    WS_POPUP,
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				    CW_USEDEFAULT, CW_USEDEFAULT,
				    CW_USEDEFAULT, CW_USEDEFAULT,
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				    0,
				    0,
				    0,
				    (LPVOID)&trackerInfo);

  if (hwndTrackWindow!=0)
  {
    /*
     * Capture the mouse input
     */
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    SetCapture(hwndTrackWindow);
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    /*
     * Pump messages. All mouse input should go the the capture window.
     */
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    while (!trackerInfo.trackingDone && GetMessageA(&msg, 0, 0, 0) )
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    {
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      if ( (msg.message >= WM_KEYFIRST) &&
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	   (msg.message <= WM_KEYLAST) )
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      {
	/*
	 * When keyboard messages are sent to windows on this thread, we
	 * want to ignore notify the drop source that the state changed.
	 * in the case of the Escape key, we also notify the drop source
	 * we give it a special meaning.
	 */
	if ( (msg.message==WM_KEYDOWN) &&
	     (msg.wParam==VK_ESCAPE) )
	{
	  trackerInfo.escPressed = TRUE;
	}

	/*
	 * Notify the drop source.
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	 */
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	OLEDD_TrackStateChange(&trackerInfo,
			       msg.pt,
			       OLEDD_GetButtonState());
      }
      else
      {
	/*
	 * Dispatch the messages only when it's not a keyboard message.
	 */
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	DispatchMessageA(&msg);
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      }
    }

    /*
     * Destroy the temporary window.
     */
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    DestroyWindow(hwndTrackWindow);
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    return trackerInfo.returnValue;
  }

  return E_FAIL;
}

/***********************************************************************
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 * OleQueryLinkFromData [OLE32.@]
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 */
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HRESULT WINAPI OleQueryLinkFromData(
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  IDataObject* pSrcDataObject)
{
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  FIXME("(%p),stub!\n", pSrcDataObject);
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  return S_OK;
}

/***********************************************************************
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 * OleRegGetMiscStatus [OLE32.@]
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 */
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HRESULT WINAPI OleRegGetMiscStatus(
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  REFCLSID clsid,
  DWORD    dwAspect,
  DWORD*   pdwStatus)
{
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  char    keyName[60];
  HKEY    clsidKey;
  HKEY    miscStatusKey;
  HKEY    aspectKey;
  LONG    result;

  /*
   * Initialize the out parameter.
   */
  *pdwStatus = 0;

  /*
   * Build the key name we're looking for
   */
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  sprintf( keyName, "CLSID\\{%08lx-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}\\",
           clsid->Data1, clsid->Data2, clsid->Data3,
           clsid->Data4[0], clsid->Data4[1], clsid->Data4[2], clsid->Data4[3],
           clsid->Data4[4], clsid->Data4[5], clsid->Data4[6], clsid->Data4[7] );
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  TRACE("(%s, %ld, %p)\n", keyName, dwAspect, pdwStatus);
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  /*
   * Open the class id Key
   */
  result = RegOpenKeyA(HKEY_CLASSES_ROOT,
		       keyName,
		       &clsidKey);

  if (result != ERROR_SUCCESS)
    return REGDB_E_CLASSNOTREG;

  /*
   * Get the MiscStatus
   */
  result = RegOpenKeyA(clsidKey,
		       "MiscStatus",
		       &miscStatusKey);

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  if (result != ERROR_SUCCESS)
  {
    RegCloseKey(clsidKey);
    return REGDB_E_READREGDB;
  }

  /*
   * Read the default value
   */
  OLEUTL_ReadRegistryDWORDValue(miscStatusKey, pdwStatus);

  /*
   * Open the key specific to the requested aspect.
   */
  sprintf(keyName, "%ld", dwAspect);

  result = RegOpenKeyA(miscStatusKey,
		       keyName,
		       &aspectKey);
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  if (result == ERROR_SUCCESS)
  {
    OLEUTL_ReadRegistryDWORDValue(aspectKey, pdwStatus);
    RegCloseKey(aspectKey);
  }

  /*
   * Cleanup
   */
  RegCloseKey(miscStatusKey);
  RegCloseKey(clsidKey);

  return S_OK;
}

/******************************************************************************
697
 *              OleSetContainedObject        [OLE32.@]
698 699
 */
HRESULT WINAPI OleSetContainedObject(
700
  LPUNKNOWN pUnknown,
701 702 703 704 705
  BOOL      fContained)
{
  IRunnableObject* runnable = NULL;
  HRESULT          hres;

706
  TRACE("(%p,%x), stub!\n", pUnknown, fContained);
707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724

  hres = IUnknown_QueryInterface(pUnknown,
				 &IID_IRunnableObject,
				 (void**)&runnable);

  if (SUCCEEDED(hres))
  {
    hres = IRunnableObject_SetContainedObject(runnable, fContained);

    IRunnableObject_Release(runnable);

    return hres;
  }

  return S_OK;
}

/******************************************************************************
725
 *              OleLoad        [OLE32.@]
726 727
 */
HRESULT WINAPI OleLoad(
728 729 730
  LPSTORAGE       pStg,
  REFIID          riid,
  LPOLECLIENTSITE pClientSite,
731 732 733 734 735 736 737
  LPVOID*         ppvObj)
{
  IPersistStorage* persistStorage = NULL;
  IOleObject*      oleObject      = NULL;
  STATSTG          storageInfo;
  HRESULT          hres;

738
  TRACE("(%p,%p,%p,%p)\n", pStg, riid, pClientSite, ppvObj);
739

740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787
  /*
   * TODO, Conversion ... OleDoAutoConvert
   */

  /*
   * Get the class ID for the object.
   */
  hres = IStorage_Stat(pStg, &storageInfo, STATFLAG_NONAME);

  /*
   * Now, try and create the handler for the object
   */
  hres = CoCreateInstance(&storageInfo.clsid,
			  NULL,
			  CLSCTX_INPROC_HANDLER,
			  &IID_IOleObject,
			  (void**)&oleObject);

  /*
   * If that fails, as it will most times, load the default
   * OLE handler.
   */
  if (FAILED(hres))
  {
    hres = OleCreateDefaultHandler(&storageInfo.clsid,
				   NULL,
				   &IID_IOleObject,
				   (void**)&oleObject);
  }

  /*
   * If we couldn't find a handler... this is bad. Abort the whole thing.
   */
  if (FAILED(hres))
    return hres;

  /*
   * Inform the new object of it's client site.
   */
  hres = IOleObject_SetClientSite(oleObject, pClientSite);

  /*
   * Initialize the object with it's IPersistStorage interface.
   */
  hres = IOleObject_QueryInterface(oleObject,
				   &IID_IPersistStorage,
				   (void**)&persistStorage);

788
  if (SUCCEEDED(hres))
789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806
  {
    IPersistStorage_Load(persistStorage, pStg);

    IPersistStorage_Release(persistStorage);
    persistStorage = NULL;
  }

  /*
   * Return the requested interface to the caller.
   */
  hres = IOleObject_QueryInterface(oleObject, riid, ppvObj);

  /*
   * Cleanup interfaces used internally
   */
  IOleObject_Release(oleObject);

  return hres;
807 808
}

809
/***********************************************************************
810
 *           OleSave     [OLE32.@]
811 812 813 814 815 816 817 818 819
 */
HRESULT WINAPI OleSave(
  LPPERSISTSTORAGE pPS,
  LPSTORAGE        pStg,
  BOOL             fSameAsLoad)
{
  HRESULT hres;
  CLSID   objectClass;

820
  TRACE("(%p,%p,%x)\n", pPS, pStg, fSameAsLoad);
821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842

  /*
   * First, we transfer the class ID (if available)
   */
  hres = IPersistStorage_GetClassID(pPS, &objectClass);

  if (SUCCEEDED(hres))
  {
    WriteClassStg(pStg, &objectClass);
  }

  /*
   * Then, we ask the object to save itself to the
   * storage. If it is successful, we commit the storage.
   */
  hres = IPersistStorage_Save(pPS, pStg, fSameAsLoad);

  if (SUCCEEDED(hres))
  {
    IStorage_Commit(pStg,
		    STGC_DEFAULT);
  }
843

844 845 846 847
  return hres;
}


848
/******************************************************************************
849
 *              OleLockRunning        [OLE32.@]
850
 */
851
HRESULT WINAPI OleLockRunning(LPUNKNOWN pUnknown, BOOL fLock, BOOL fLastUnlockCloses)
852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874
{
  IRunnableObject* runnable = NULL;
  HRESULT          hres;

  TRACE("(%p,%x,%x)\n", pUnknown, fLock, fLastUnlockCloses);

  hres = IUnknown_QueryInterface(pUnknown,
				 &IID_IRunnableObject,
				 (void**)&runnable);

  if (SUCCEEDED(hres))
  {
    hres = IRunnableObject_LockRunning(runnable, fLock, fLastUnlockCloses);

    IRunnableObject_Release(runnable);

    return hres;
  }
  else
    return E_INVALIDARG;
}


875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901
/**************************************************************************
 * Internal methods to manage the shared OLE menu in response to the
 * OLE***MenuDescriptor API
 */

/***
 * OLEMenu_Initialize()
 *
 * Initializes the OLEMENU data structures.
 */
static void OLEMenu_Initialize()
{
}

/***
 * OLEMenu_UnInitialize()
 *
 * Releases the OLEMENU data structures.
 */
static void OLEMenu_UnInitialize()
{
}

/*************************************************************************
 * OLEMenu_InstallHooks
 * Install thread scope message hooks for WH_GETMESSAGE and WH_CALLWNDPROC
 *
902
 * RETURNS: TRUE if message hooks were successfully installed
903 904 905 906 907 908 909 910 911 912 913 914 915
 *          FALSE on failure
 */
BOOL OLEMenu_InstallHooks( DWORD tid )
{
  OleMenuHookItem *pHookItem = NULL;

  /* Create an entry for the hook table */
  if ( !(pHookItem = HeapAlloc(GetProcessHeap(), 0,
                               sizeof(OleMenuHookItem)) ) )
    return FALSE;

  pHookItem->tid = tid;
  pHookItem->hHeap = GetProcessHeap();
916

917 918 919 920 921 922 923 924 925 926 927 928 929
  /* Install a thread scope message hook for WH_GETMESSAGE */
  pHookItem->GetMsg_hHook = SetWindowsHookExA( WH_GETMESSAGE, OLEMenu_GetMsgProc,
                                               0, GetCurrentThreadId() );
  if ( !pHookItem->GetMsg_hHook )
    goto CLEANUP;

  /* Install a thread scope message hook for WH_CALLWNDPROC */
  pHookItem->CallWndProc_hHook = SetWindowsHookExA( WH_CALLWNDPROC, OLEMenu_CallWndProc,
                                                    0, GetCurrentThreadId() );
  if ( !pHookItem->CallWndProc_hHook )
    goto CLEANUP;

  /* Insert the hook table entry */
930 931
  pHookItem->next = hook_list;
  hook_list = pHookItem;
932

933
  return TRUE;
934

935 936 937 938 939 940 941 942
CLEANUP:
  /* Unhook any hooks */
  if ( pHookItem->GetMsg_hHook )
    UnhookWindowsHookEx( pHookItem->GetMsg_hHook );
  if ( pHookItem->CallWndProc_hHook )
    UnhookWindowsHookEx( pHookItem->CallWndProc_hHook );
  /* Release the hook table entry */
  HeapFree(pHookItem->hHeap, 0, pHookItem );
943

944 945 946 947 948 949 950
  return FALSE;
}

/*************************************************************************
 * OLEMenu_UnInstallHooks
 * UnInstall thread scope message hooks for WH_GETMESSAGE and WH_CALLWNDPROC
 *
951
 * RETURNS: TRUE if message hooks were successfully installed
952 953 954 955 956
 *          FALSE on failure
 */
BOOL OLEMenu_UnInstallHooks( DWORD tid )
{
  OleMenuHookItem *pHookItem = NULL;
957
  OleMenuHookItem **ppHook = &hook_list;
958

959 960 961 962 963 964 965 966 967 968 969
  while (*ppHook)
  {
      if ((*ppHook)->tid == tid)
      {
          pHookItem = *ppHook;
          *ppHook = pHookItem->next;
          break;
      }
      ppHook = &(*ppHook)->next;
  }
  if (!pHookItem) return FALSE;
970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996

  /* Uninstall the hooks installed for this thread */
  if ( !UnhookWindowsHookEx( pHookItem->GetMsg_hHook ) )
    goto CLEANUP;
  if ( !UnhookWindowsHookEx( pHookItem->CallWndProc_hHook ) )
    goto CLEANUP;

  /* Release the hook table entry */
  HeapFree(pHookItem->hHeap, 0, pHookItem );

  return TRUE;

CLEANUP:
  /* Release the hook table entry */
  if (pHookItem)
    HeapFree(pHookItem->hHeap, 0, pHookItem );

  return FALSE;
}

/*************************************************************************
 * OLEMenu_IsHookInstalled
 * Tests if OLEMenu hooks have been installed for a thread
 *
 * RETURNS: The pointer and index of the hook table entry for the tid
 *          NULL and -1 for the index if no hooks were installed for this thread
 */
997
OleMenuHookItem * OLEMenu_IsHookInstalled( DWORD tid )
998 999 1000 1001 1002
{
  OleMenuHookItem *pHookItem = NULL;

  /* Do a simple linear search for an entry whose tid matches ours.
   * We really need a map but efficiency is not a concern here. */
1003
  for (pHookItem = hook_list; pHookItem; pHookItem = pHookItem->next)
1004 1005 1006 1007
  {
    if ( tid == pHookItem->tid )
      return pHookItem;
  }
1008

1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028
  return NULL;
}

/***********************************************************************
 *           OLEMenu_FindMainMenuIndex
 *
 * Used by OLEMenu API to find the top level group a menu item belongs to.
 * On success pnPos contains the index of the item in the top level menu group
 *
 * RETURNS: TRUE if the ID was found, FALSE on failure
 */
static BOOL OLEMenu_FindMainMenuIndex( HMENU hMainMenu, HMENU hPopupMenu, UINT *pnPos )
{
  UINT i, nItems;

  nItems = GetMenuItemCount( hMainMenu );

  for (i = 0; i < nItems; i++)
  {
    HMENU hsubmenu;
1029

1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075
    /*  Is the current item a submenu? */
    if ( (hsubmenu = GetSubMenu(hMainMenu, i)) )
    {
      /* If the handle is the same we're done */
      if ( hsubmenu == hPopupMenu )
      {
        if (pnPos)
          *pnPos = i;
        return TRUE;
      }
      /* Recursively search without updating pnPos */
      else if ( OLEMenu_FindMainMenuIndex( hsubmenu, hPopupMenu, NULL ) )
      {
        if (pnPos)
          *pnPos = i;
        return TRUE;
      }
    }
  }

  return FALSE;
}

/***********************************************************************
 *           OLEMenu_SetIsServerMenu
 *
 * Checks whether a popup menu belongs to a shared menu group which is
 * owned by the server, and sets the menu descriptor state accordingly.
 * All menu messages from these groups should be routed to the server.
 *
 * RETURNS: TRUE if the popup menu is part of a server owned group
 *          FASE if the popup menu is part of a container owned group
 */
BOOL OLEMenu_SetIsServerMenu( HMENU hmenu, OleMenuDescriptor *pOleMenuDescriptor )
{
  UINT nPos = 0, nWidth, i;

  pOleMenuDescriptor->bIsServerItem = FALSE;

  /* Don't bother searching if the popup is the combined menu itself */
  if ( hmenu == pOleMenuDescriptor->hmenuCombined )
    return FALSE;

  /* Find the menu item index in the shared OLE menu that this item belongs to */
  if ( !OLEMenu_FindMainMenuIndex( pOleMenuDescriptor->hmenuCombined, hmenu,  &nPos ) )
    return FALSE;
1076

1077 1078 1079 1080
  /* The group widths array has counts for the number of elements
   * in the groups File, Edit, Container, Object, Window, Help.
   * The Edit, Object & Help groups belong to the server object
   * and the other three belong to the container.
1081
   * Loop through the group widths and locate the group we are a member of.
1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108
   */
  for ( i = 0, nWidth = 0; i < 6; i++ )
  {
    nWidth += pOleMenuDescriptor->mgw.width[i];
    if ( nPos < nWidth )
    {
      /* Odd elements are server menu widths */
      pOleMenuDescriptor->bIsServerItem = (i%2) ? TRUE : FALSE;
      break;
    }
  }

  return pOleMenuDescriptor->bIsServerItem;
}

/*************************************************************************
 * OLEMenu_CallWndProc
 * Thread scope WH_CALLWNDPROC hook proc filter function (callback)
 * This is invoked from a message hook installed in OleSetMenuDescriptor.
 */
LRESULT CALLBACK OLEMenu_CallWndProc(INT code, WPARAM wParam, LPARAM lParam)
{
  LPCWPSTRUCT pMsg = NULL;
  HOLEMENU hOleMenu = 0;
  OleMenuDescriptor *pOleMenuDescriptor = NULL;
  OleMenuHookItem *pHookItem = NULL;
  WORD fuFlags;
1109

1110
  TRACE("%i, %04x, %08x\n", code, wParam, (unsigned)lParam );
1111 1112 1113 1114

  /* Check if we're being asked to process the message */
  if ( HC_ACTION != code )
    goto NEXTHOOK;
1115

1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144
  /* Retrieve the current message being dispatched from lParam */
  pMsg = (LPCWPSTRUCT)lParam;

  /* Check if the message is destined for a window we are interested in:
   * If the window has an OLEMenu property we may need to dispatch
   * the menu message to its active objects window instead. */

  hOleMenu = (HOLEMENU)GetPropA( pMsg->hwnd, "PROP_OLEMenuDescriptor" );
  if ( !hOleMenu )
    goto NEXTHOOK;

  /* Get the menu descriptor */
  pOleMenuDescriptor = (OleMenuDescriptor *) GlobalLock( hOleMenu );
  if ( !pOleMenuDescriptor ) /* Bad descriptor! */
    goto NEXTHOOK;

  /* Process menu messages */
  switch( pMsg->message )
  {
    case WM_INITMENU:
    {
      /* Reset the menu descriptor state */
      pOleMenuDescriptor->bIsServerItem = FALSE;

      /* Send this message to the server as well */
      SendMessageA( pOleMenuDescriptor->hwndActiveObject,
                  pMsg->message, pMsg->wParam, pMsg->lParam );
      goto NEXTHOOK;
    }
1145

1146 1147 1148 1149 1150 1151
    case WM_INITMENUPOPUP:
    {
      /* Save the state for whether this is a server owned menu */
      OLEMenu_SetIsServerMenu( (HMENU)pMsg->wParam, pOleMenuDescriptor );
      break;
    }
1152

1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164
    case WM_MENUSELECT:
    {
      fuFlags = HIWORD(pMsg->wParam);  /* Get flags */
      if ( fuFlags & MF_SYSMENU )
         goto NEXTHOOK;

      /* Save the state for whether this is a server owned popup menu */
      else if ( fuFlags & MF_POPUP )
        OLEMenu_SetIsServerMenu( (HMENU)pMsg->lParam, pOleMenuDescriptor );

      break;
    }
1165

1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184
    case WM_DRAWITEM:
    {
      LPDRAWITEMSTRUCT lpdis = (LPDRAWITEMSTRUCT) pMsg->lParam;
      if ( pMsg->wParam != 0 || lpdis->CtlType != ODT_MENU )
        goto NEXTHOOK;  /* Not a menu message */

      break;
    }

    default:
      goto NEXTHOOK;
  }

  /* If the message was for the server dispatch it accordingly */
  if ( pOleMenuDescriptor->bIsServerItem )
  {
    SendMessageA( pOleMenuDescriptor->hwndActiveObject,
                  pMsg->message, pMsg->wParam, pMsg->lParam );
  }
1185

1186 1187 1188
NEXTHOOK:
  if ( pOleMenuDescriptor )
    GlobalUnlock( hOleMenu );
1189

1190
  /* Lookup the hook item for the current thread */
1191
  if ( !( pHookItem = OLEMenu_IsHookInstalled( GetCurrentThreadId() ) ) )
1192 1193
  {
    /* This should never fail!! */
1194
    WARN("could not retrieve hHook for current thread!\n" );
1195 1196
    return 0;
  }
1197

1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213
  /* Pass on the message to the next hooker */
  return CallNextHookEx( pHookItem->CallWndProc_hHook, code, wParam, lParam );
}

/*************************************************************************
 * OLEMenu_GetMsgProc
 * Thread scope WH_GETMESSAGE hook proc filter function (callback)
 * This is invoked from a message hook installed in OleSetMenuDescriptor.
 */
LRESULT CALLBACK OLEMenu_GetMsgProc(INT code, WPARAM wParam, LPARAM lParam)
{
  LPMSG pMsg = NULL;
  HOLEMENU hOleMenu = 0;
  OleMenuDescriptor *pOleMenuDescriptor = NULL;
  OleMenuHookItem *pHookItem = NULL;
  WORD wCode;
1214

1215
  TRACE("%i, %04x, %08x\n", code, wParam, (unsigned)lParam );
1216 1217 1218 1219

  /* Check if we're being asked to process a  messages */
  if ( HC_ACTION != code )
    goto NEXTHOOK;
1220

1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258
  /* Retrieve the current message being dispatched from lParam */
  pMsg = (LPMSG)lParam;

  /* Check if the message is destined for a window we are interested in:
   * If the window has an OLEMenu property we may need to dispatch
   * the menu message to its active objects window instead. */

  hOleMenu = (HOLEMENU)GetPropA( pMsg->hwnd, "PROP_OLEMenuDescriptor" );
  if ( !hOleMenu )
    goto NEXTHOOK;

  /* Process menu messages */
  switch( pMsg->message )
  {
    case WM_COMMAND:
    {
      wCode = HIWORD(pMsg->wParam);  /* Get notification code */
      if ( wCode )
        goto NEXTHOOK;  /* Not a menu message */
      break;
    }
    default:
      goto NEXTHOOK;
  }

  /* Get the menu descriptor */
  pOleMenuDescriptor = (OleMenuDescriptor *) GlobalLock( hOleMenu );
  if ( !pOleMenuDescriptor ) /* Bad descriptor! */
    goto NEXTHOOK;

  /* If the message was for the server dispatch it accordingly */
  if ( pOleMenuDescriptor->bIsServerItem )
  {
    /* Change the hWnd in the message to the active objects hWnd.
     * The message loop which reads this message will automatically
     * dispatch it to the embedded objects window. */
    pMsg->hwnd = pOleMenuDescriptor->hwndActiveObject;
  }
1259

1260 1261 1262
NEXTHOOK:
  if ( pOleMenuDescriptor )
    GlobalUnlock( hOleMenu );
1263

1264
  /* Lookup the hook item for the current thread */
1265
  if ( !( pHookItem = OLEMenu_IsHookInstalled( GetCurrentThreadId() ) ) )
1266 1267
  {
    /* This should never fail!! */
1268
    WARN("could not retrieve hHook for current thread!\n" );
1269 1270
    return FALSE;
  }
1271

1272 1273 1274 1275
  /* Pass on the message to the next hooker */
  return CallNextHookEx( pHookItem->GetMsg_hHook, code, wParam, lParam );
}

1276
/***********************************************************************
1277
 * OleCreateMenuDescriptor [OLE32.@]
1278 1279 1280 1281 1282 1283 1284
 * Creates an OLE menu descriptor for OLE to use when dispatching
 * menu messages and commands.
 *
 * PARAMS:
 *    hmenuCombined  -  Handle to the objects combined menu
 *    lpMenuWidths   -  Pointer to array of 6 LONG's indicating menus per group
 *
1285
 */
1286 1287 1288
HOLEMENU WINAPI OleCreateMenuDescriptor(
  HMENU                hmenuCombined,
  LPOLEMENUGROUPWIDTHS lpMenuWidths)
1289
{
1290 1291 1292 1293 1294 1295
  HOLEMENU hOleMenu;
  OleMenuDescriptor *pOleMenuDescriptor;
  int i;

  if ( !hmenuCombined || !lpMenuWidths )
    return 0;
1296

1297 1298 1299
  /* Create an OLE menu descriptor */
  if ( !(hOleMenu = GlobalAlloc(GMEM_MOVEABLE | GMEM_ZEROINIT,
                                sizeof(OleMenuDescriptor) ) ) )
1300
  return 0;
1301 1302 1303 1304 1305 1306 1307 1308

  pOleMenuDescriptor = (OleMenuDescriptor *) GlobalLock( hOleMenu );
  if ( !pOleMenuDescriptor )
    return 0;

  /* Initialize menu group widths and hmenu */
  for ( i = 0; i < 6; i++ )
    pOleMenuDescriptor->mgw.width[i] = lpMenuWidths->width[i];
1309

1310 1311 1312
  pOleMenuDescriptor->hmenuCombined = hmenuCombined;
  pOleMenuDescriptor->bIsServerItem = FALSE;
  GlobalUnlock( hOleMenu );
1313

1314
  return hOleMenu;
1315 1316 1317
}

/***********************************************************************
1318
 * OleDestroyMenuDescriptor [OLE32.@]
1319
 * Destroy the shared menu descriptor
1320
 */
1321
HRESULT WINAPI OleDestroyMenuDescriptor(
1322
  HOLEMENU hmenuDescriptor)
1323
{
1324 1325
  if ( hmenuDescriptor )
    GlobalFree( hmenuDescriptor );
1326
	return S_OK;
1327 1328 1329
}

/***********************************************************************
1330
 * OleSetMenuDescriptor [OLE32.@]
1331 1332 1333 1334
 * Installs or removes OLE dispatching code for the containers frame window
 * FIXME: The lpFrame and lpActiveObject parameters are currently ignored
 * OLE should install context sensitive help F1 filtering for the app when
 * these are non null.
1335
 *
1336 1337 1338 1339 1340 1341 1342 1343 1344 1345
 * PARAMS:
 *     hOleMenu         Handle to composite menu descriptor
 *     hwndFrame        Handle to containers frame window
 *     hwndActiveObject Handle to objects in-place activation window
 *     lpFrame          Pointer to IOleInPlaceFrame on containers window
 *     lpActiveObject   Pointer to IOleInPlaceActiveObject on active in-place object
 *
 * RETURNS:
 *      S_OK                               - menu installed correctly
 *      E_FAIL, E_INVALIDARG, E_UNEXPECTED - failure
1346 1347
 */
HRESULT WINAPI OleSetMenuDescriptor(
1348
  HOLEMENU               hOleMenu,
1349 1350
  HWND                   hwndFrame,
  HWND                   hwndActiveObject,
1351 1352 1353
  LPOLEINPLACEFRAME        lpFrame,
  LPOLEINPLACEACTIVEOBJECT lpActiveObject)
{
1354 1355 1356 1357 1358 1359 1360 1361
  OleMenuDescriptor *pOleMenuDescriptor = NULL;

  /* Check args */
  if ( !hwndFrame || (hOleMenu && !hwndActiveObject) )
    return E_INVALIDARG;

  if ( lpFrame || lpActiveObject )
  {
1362
     FIXME("(%x, %p, %p, %p, %p), Context sensitive help filtering not implemented!\n",
1363
	(unsigned int)hOleMenu,
1364 1365 1366 1367
	hwndFrame,
	hwndActiveObject,
	lpFrame,
	lpActiveObject);
1368 1369 1370 1371 1372 1373
  }

  /* Set up a message hook to intercept the containers frame window messages.
   * The message filter is responsible for dispatching menu messages from the
   * shared menu which are intended for the object.
   */
1374

1375 1376 1377 1378 1379 1380
  if ( hOleMenu )  /* Want to install dispatching code */
  {
    /* If OLEMenu hooks are already installed for this thread, fail
     * Note: This effectively means that OleSetMenuDescriptor cannot
     * be called twice in succession on the same frame window
     * without first calling it with a null hOleMenu to uninstall */
1381
    if ( OLEMenu_IsHookInstalled( GetCurrentThreadId() ) )
1382
  return E_FAIL;
1383

1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394
    /* Get the menu descriptor */
    pOleMenuDescriptor = (OleMenuDescriptor *) GlobalLock( hOleMenu );
    if ( !pOleMenuDescriptor )
      return E_UNEXPECTED;

    /* Update the menu descriptor */
    pOleMenuDescriptor->hwndFrame = hwndFrame;
    pOleMenuDescriptor->hwndActiveObject = hwndActiveObject;

    GlobalUnlock( hOleMenu );
    pOleMenuDescriptor = NULL;
1395

1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407
    /* Add a menu descriptor windows property to the frame window */
    SetPropA( hwndFrame, "PROP_OLEMenuDescriptor", hOleMenu );

    /* Install thread scope message hooks for WH_GETMESSAGE and WH_CALLWNDPROC */
    if ( !OLEMenu_InstallHooks( GetCurrentThreadId() ) )
      return E_FAIL;
  }
  else  /* Want to uninstall dispatching code */
  {
    /* Uninstall the hooks */
    if ( !OLEMenu_UnInstallHooks( GetCurrentThreadId() ) )
      return E_FAIL;
1408

1409 1410 1411
    /* Remove the menu descriptor property from the frame window */
    RemovePropA( hwndFrame, "PROP_OLEMenuDescriptor" );
  }
1412

1413
  return S_OK;
1414 1415
}

1416
/******************************************************************************
1417
 *              IsAccelerator        [OLE32.@]
1418 1419 1420 1421 1422 1423 1424 1425 1426
 * Mostly copied from controls/menu.c TranslateAccelerator implementation
 */
BOOL WINAPI IsAccelerator(HACCEL hAccel, int cAccelEntries, LPMSG lpMsg, WORD* lpwCmd)
{
    /* YES, Accel16! */
    LPACCEL16 lpAccelTbl;
    int i;

    if(!lpMsg) return FALSE;
1427
    if (!hAccel || !(lpAccelTbl = (LPACCEL16)LockResource16(HACCEL_16(hAccel))))
1428
    {
1429
	WARN_(accel)("invalid accel handle=%p\n", hAccel);
1430 1431 1432 1433 1434 1435 1436 1437
	return FALSE;
    }
    if((lpMsg->message != WM_KEYDOWN &&
	lpMsg->message != WM_KEYUP &&
	lpMsg->message != WM_SYSKEYDOWN &&
	lpMsg->message != WM_SYSKEYUP &&
	lpMsg->message != WM_CHAR)) return FALSE;

1438 1439
    TRACE_(accel)("hAccel=%p, cAccelEntries=%d,"
		"msg->hwnd=%p, msg->message=%04x, wParam=%08x, lParam=%08lx\n",
1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479
		hAccel, cAccelEntries,
		lpMsg->hwnd, lpMsg->message, lpMsg->wParam, lpMsg->lParam);
    for(i = 0; i < cAccelEntries; i++)
    {
	if(lpAccelTbl[i].key != lpMsg->wParam)
	    continue;

	if(lpMsg->message == WM_CHAR)
	{
	    if(!(lpAccelTbl[i].fVirt & FALT) && !(lpAccelTbl[i].fVirt & FVIRTKEY))
	    {
		TRACE_(accel)("found accel for WM_CHAR: ('%c')\n", lpMsg->wParam & 0xff);
		goto found;
	    }
	}
	else
	{
	    if(lpAccelTbl[i].fVirt & FVIRTKEY)
	    {
		INT mask = 0;
		TRACE_(accel)("found accel for virt_key %04x (scan %04x)\n",
				lpMsg->wParam, HIWORD(lpMsg->lParam) & 0xff);
		if(GetKeyState(VK_SHIFT) & 0x8000) mask |= FSHIFT;
		if(GetKeyState(VK_CONTROL) & 0x8000) mask |= FCONTROL;
		if(GetKeyState(VK_MENU) & 0x8000) mask |= FALT;
		if(mask == (lpAccelTbl[i].fVirt & (FSHIFT | FCONTROL | FALT))) goto found;
		TRACE_(accel)("incorrect SHIFT/CTRL/ALT-state\n");
	    }
	    else
	    {
		if(!(lpMsg->lParam & 0x01000000))  /* no special_key */
		{
		    if((lpAccelTbl[i].fVirt & FALT) && (lpMsg->lParam & 0x20000000))
		    {						       /* ^^ ALT pressed */
			TRACE_(accel)("found accel for Alt-%c\n", lpMsg->wParam & 0xff);
			goto found;
		    }
		}
	    }
	}
1480
    }
1481 1482 1483 1484 1485 1486 1487 1488 1489

    WARN_(accel)("couldn't translate accelerator key\n");
    return FALSE;

found:
    if(lpwCmd) *lpwCmd = lpAccelTbl[i].cmd;
    return TRUE;
}

1490
/***********************************************************************
1491
 * ReleaseStgMedium [OLE32.@]
1492 1493 1494 1495 1496 1497 1498 1499
 */
void WINAPI ReleaseStgMedium(
  STGMEDIUM* pmedium)
{
  switch (pmedium->tymed)
  {
    case TYMED_HGLOBAL:
    {
1500
      if ( (pmedium->pUnkForRelease==0) &&
1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512
	   (pmedium->u.hGlobal!=0) )
	GlobalFree(pmedium->u.hGlobal);
      break;
    }
    case TYMED_FILE:
    {
      if (pmedium->u.lpszFileName!=0)
      {
	if (pmedium->pUnkForRelease==0)
	{
	  DeleteFileW(pmedium->u.lpszFileName);
	}
1513

1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535
	CoTaskMemFree(pmedium->u.lpszFileName);
      }
      break;
    }
    case TYMED_ISTREAM:
    {
      if (pmedium->u.pstm!=0)
      {
	IStream_Release(pmedium->u.pstm);
      }
      break;
    }
    case TYMED_ISTORAGE:
    {
      if (pmedium->u.pstg!=0)
      {
	IStorage_Release(pmedium->u.pstg);
      }
      break;
    }
    case TYMED_GDI:
    {
1536
      if ( (pmedium->pUnkForRelease==0) &&
1537 1538
	   (pmedium->u.hBitmap!=0) )
	DeleteObject(pmedium->u.hBitmap);
1539 1540 1541 1542
      break;
    }
    case TYMED_MFPICT:
    {
1543
      if ( (pmedium->pUnkForRelease==0) &&
1544 1545
	   (pmedium->u.hMetaFilePict!=0) )
      {
1546
	LPMETAFILEPICT pMP = GlobalLock(pmedium->u.hMetaFilePict);
1547
	DeleteMetaFile(pMP->hMF);
1548 1549
	GlobalUnlock(pmedium->u.hMetaFilePict);
	GlobalFree(pmedium->u.hMetaFilePict);
1550 1551 1552 1553 1554
      }
      break;
    }
    case TYMED_ENHMF:
    {
1555
      if ( (pmedium->pUnkForRelease==0) &&
1556 1557 1558 1559 1560 1561 1562 1563 1564 1565
	   (pmedium->u.hEnhMetaFile!=0) )
      {
	DeleteEnhMetaFile(pmedium->u.hEnhMetaFile);
      }
      break;
    }
    case TYMED_NULL:
    default:
      break;
  }
1566
  pmedium->tymed=TYMED_NULL;
1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577

  /*
   * After cleaning up, the unknown is released
   */
  if (pmedium->pUnkForRelease!=0)
  {
    IUnknown_Release(pmedium->pUnkForRelease);
    pmedium->pUnkForRelease = 0;
  }
}

1578 1579 1580 1581 1582 1583 1584
/***
 * OLEDD_Initialize()
 *
 * Initializes the OLE drag and drop data structures.
 */
static void OLEDD_Initialize()
{
1585
    WNDCLASSA wndClass;
1586

1587
    ZeroMemory (&wndClass, sizeof(WNDCLASSA));
1588
    wndClass.style         = CS_GLOBALCLASS;
1589
    wndClass.lpfnWndProc   = (WNDPROC)OLEDD_DragTrackerWindowProc;
1590 1591 1592 1593 1594
    wndClass.cbClsExtra    = 0;
    wndClass.cbWndExtra    = sizeof(TrackerWindowInfo*);
    wndClass.hCursor       = 0;
    wndClass.hbrBackground = 0;
    wndClass.lpszClassName = OLEDD_DRAGTRACKERCLASS;
1595

1596
    RegisterClassA (&wndClass);
1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610
}

/***
 * OLEDD_UnInitialize()
 *
 * Releases the OLE drag and drop data structures.
 */
static void OLEDD_UnInitialize()
{
  /*
   * Simply empty the list.
   */
  while (targetListHead!=NULL)
  {
1611
    RevokeDragDrop(targetListHead->hwndTarget);
1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660
  }
}

/***
 * OLEDD_InsertDropTarget()
 *
 * Insert the target node in the tree.
 */
static void OLEDD_InsertDropTarget(DropTargetNode* nodeToAdd)
{
  DropTargetNode*  curNode;
  DropTargetNode** parentNodeLink;

  /*
   * Iterate the tree to find the insertion point.
   */
  curNode        = targetListHead;
  parentNodeLink = &targetListHead;

  while (curNode!=NULL)
  {
    if (nodeToAdd->hwndTarget<curNode->hwndTarget)
    {
      /*
       * If the node we want to add has a smaller HWND, go left
       */
      parentNodeLink = &curNode->prevDropTarget;
      curNode        =  curNode->prevDropTarget;
    }
    else if (nodeToAdd->hwndTarget>curNode->hwndTarget)
    {
      /*
       * If the node we want to add has a larger HWND, go right
       */
      parentNodeLink = &curNode->nextDropTarget;
      curNode        =  curNode->nextDropTarget;
    }
    else
    {
      /*
       * The item was found in the list. It shouldn't have been there
       */
      assert(FALSE);
      return;
    }
  }

  /*
   * If we get here, we have found a spot for our item. The parentNodeLink
1661
   * pointer points to the pointer that we have to modify.
1662 1663 1664 1665 1666 1667 1668
   * The curNode should be NULL. We just have to establish the link and Voila!
   */
  assert(curNode==NULL);
  assert(parentNodeLink!=NULL);
  assert(*parentNodeLink==NULL);

  *parentNodeLink=nodeToAdd;
1669
}
1670 1671 1672 1673 1674 1675

/***
 * OLEDD_ExtractDropTarget()
 *
 * Removes the target node from the tree.
 */
1676
static DropTargetNode* OLEDD_ExtractDropTarget(HWND hwndOfTarget)
1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707
{
  DropTargetNode*  curNode;
  DropTargetNode** parentNodeLink;

  /*
   * Iterate the tree to find the insertion point.
   */
  curNode        = targetListHead;
  parentNodeLink = &targetListHead;

  while (curNode!=NULL)
  {
    if (hwndOfTarget<curNode->hwndTarget)
    {
      /*
       * If the node we want to add has a smaller HWND, go left
       */
      parentNodeLink = &curNode->prevDropTarget;
      curNode        =  curNode->prevDropTarget;
    }
    else if (hwndOfTarget>curNode->hwndTarget)
    {
      /*
       * If the node we want to add has a larger HWND, go right
       */
      parentNodeLink = &curNode->nextDropTarget;
      curNode        =  curNode->nextDropTarget;
    }
    else
    {
      /*
1708
       * The item was found in the list. Detach it from it's parent and
1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748
       * re-insert it's kids in the tree.
       */
      assert(parentNodeLink!=NULL);
      assert(*parentNodeLink==curNode);

      /*
       * We arbitrately re-attach the left sub-tree to the parent.
       */
      *parentNodeLink = curNode->prevDropTarget;

      /*
       * And we re-insert the right subtree
       */
      if (curNode->nextDropTarget!=NULL)
      {
	OLEDD_InsertDropTarget(curNode->nextDropTarget);
      }

      /*
       * The node we found is still a valid node once we complete
       * the unlinking of the kids.
       */
      curNode->nextDropTarget=NULL;
      curNode->prevDropTarget=NULL;

      return curNode;
    }
  }

  /*
   * If we get here, the node is not in the tree
   */
  return NULL;
}

/***
 * OLEDD_FindDropTarget()
 *
 * Finds information about the drop target.
 */
1749
static DropTargetNode* OLEDD_FindDropTarget(HWND hwndOfTarget)
1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797
{
  DropTargetNode*  curNode;

  /*
   * Iterate the tree to find the HWND value.
   */
  curNode        = targetListHead;

  while (curNode!=NULL)
  {
    if (hwndOfTarget<curNode->hwndTarget)
    {
      /*
       * If the node we want to add has a smaller HWND, go left
       */
      curNode =  curNode->prevDropTarget;
    }
    else if (hwndOfTarget>curNode->hwndTarget)
    {
      /*
       * If the node we want to add has a larger HWND, go right
       */
      curNode =  curNode->nextDropTarget;
    }
    else
    {
      /*
       * The item was found in the list.
       */
      return curNode;
    }
  }

  /*
   * If we get here, the item is not in the list
   */
  return NULL;
}

/***
 * OLEDD_DragTrackerWindowProc()
 *
 * This method is the WindowProcedure of the drag n drop tracking
 * window. During a drag n Drop operation, an invisible window is created
 * to receive the user input and act upon it. This procedure is in charge
 * of this behavior.
 */
static LRESULT WINAPI OLEDD_DragTrackerWindowProc(
1798
			 HWND   hwnd,
1799
			 UINT   uMsg,
1800
			 WPARAM wParam,
1801 1802 1803 1804 1805 1806
			 LPARAM   lParam)
{
  switch (uMsg)
  {
    case WM_CREATE:
    {
1807
      LPCREATESTRUCTA createStruct = (LPCREATESTRUCTA)lParam;
1808

1809 1810
      SetWindowLongA(hwnd, 0, (LONG)createStruct->lpCreateParams);

1811 1812 1813 1814 1815

      break;
    }
    case WM_MOUSEMOVE:
    {
1816 1817
      TrackerWindowInfo* trackerInfo = (TrackerWindowInfo*)GetWindowLongA(hwnd, 0);
      POINT            mousePos;
1818 1819 1820 1821 1822 1823

      /*
       * Get the current mouse position in screen coordinates.
       */
      mousePos.x = LOWORD(lParam);
      mousePos.y = HIWORD(lParam);
1824
      ClientToScreen(hwnd, &mousePos);
1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839

      /*
       * Track the movement of the mouse.
       */
      OLEDD_TrackMouseMove(trackerInfo, mousePos, wParam);

      break;
    }
    case WM_LBUTTONUP:
    case WM_MBUTTONUP:
    case WM_RBUTTONUP:
    case WM_LBUTTONDOWN:
    case WM_MBUTTONDOWN:
    case WM_RBUTTONDOWN:
    {
1840 1841
      TrackerWindowInfo* trackerInfo = (TrackerWindowInfo*)GetWindowLongA(hwnd, 0);
      POINT            mousePos;
1842 1843 1844 1845 1846 1847

      /*
       * Get the current mouse position in screen coordinates.
       */
      mousePos.x = LOWORD(lParam);
      mousePos.y = HIWORD(lParam);
1848
      ClientToScreen(hwnd, &mousePos);
1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862

      /*
       * Notify everyone that the button state changed
       * TODO: Check if the "escape" key was pressed.
       */
      OLEDD_TrackStateChange(trackerInfo, mousePos, wParam);

      break;
    }
  }

  /*
   * This is a window proc after all. Let's call the default.
   */
1863
  return DefWindowProcA (hwnd, uMsg, wParam, lParam);
1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884
}

/***
 * OLEDD_TrackMouseMove()
 *
 * This method is invoked while a drag and drop operation is in effect.
 * it will generate the appropriate callbacks in the drop source
 * and drop target. It will also provide the expected feedback to
 * the user.
 *
 * params:
 *    trackerInfo - Pointer to the structure identifying the
 *                  drag & drop operation that is currently
 *                  active.
 *    mousePos    - Current position of the mouse in screen
 *                  coordinates.
 *    keyState    - Contains the state of the shift keys and the
 *                  mouse buttons (MK_LBUTTON and the like)
 */
static void OLEDD_TrackMouseMove(
  TrackerWindowInfo* trackerInfo,
1885
  POINT            mousePos,
1886 1887
  DWORD              keyState)
{
1888
  HWND   hwndNewTarget = 0;
1889 1890 1891 1892 1893
  HRESULT  hr = S_OK;

  /*
   * Get the handle of the window under the mouse
   */
1894
  hwndNewTarget = WindowFromPoint(mousePos);
1895

1896 1897 1898 1899 1900 1901
  /*
   * Every time, we re-initialize the effects passed to the
   * IDropTarget to the effects allowed by the source.
   */
  *trackerInfo->pdwEffect = trackerInfo->dwOKEffect;

1902 1903 1904 1905
  /*
   * If we are hovering over the same target as before, send the
   * DragOver notification
   */
1906
  if ( (trackerInfo->curDragTarget != 0) &&
1907
       (trackerInfo->curTargetHWND == hwndNewTarget) )
1908 1909
  {
    POINTL  mousePosParam;
1910

1911 1912 1913 1914 1915 1916 1917
    /*
     * The documentation tells me that the coordinate should be in the target
     * window's coordinate space. However, the tests I made tell me the
     * coordinates should be in screen coordinates.
     */
    mousePosParam.x = mousePos.x;
    mousePosParam.y = mousePos.y;
1918

1919 1920 1921 1922 1923 1924
    IDropTarget_DragOver(trackerInfo->curDragTarget,
			 keyState,
			 mousePosParam,
			 trackerInfo->pdwEffect);
  }
  else
1925
  {
1926
    DropTargetNode* newDropTargetNode = 0;
1927

1928 1929 1930 1931 1932 1933 1934 1935
    /*
     * If we changed window, we have to notify our old target and check for
     * the new one.
     */
    if (trackerInfo->curDragTarget!=0)
    {
      IDropTarget_DragLeave(trackerInfo->curDragTarget);
    }
1936

1937 1938 1939 1940 1941 1942 1943 1944
    /*
     * Make sure we're hovering over a window.
     */
    if (hwndNewTarget!=0)
    {
      /*
       * Find-out if there is a drag target under the mouse
       */
1945
      HWND nexttar = hwndNewTarget;
1946 1947
      trackerInfo->curTargetHWND = hwndNewTarget;

1948 1949 1950 1951 1952
      do {
	newDropTargetNode = OLEDD_FindDropTarget(nexttar);
      } while (!newDropTargetNode && (nexttar = GetParent(nexttar)) != 0);
      if(nexttar) hwndNewTarget = nexttar;

1953 1954
      trackerInfo->curDragTargetHWND = hwndNewTarget;
      trackerInfo->curDragTarget     = newDropTargetNode ? newDropTargetNode->dropTarget : 0;
1955

1956 1957 1958 1959 1960 1961
      /*
       * If there is, notify it that we just dragged-in
       */
      if (trackerInfo->curDragTarget!=0)
      {
	POINTL  mousePosParam;
1962

1963 1964 1965 1966 1967 1968 1969
	/*
	 * The documentation tells me that the coordinate should be in the target
	 * window's coordinate space. However, the tests I made tell me the
	 * coordinates should be in screen coordinates.
	 */
	mousePosParam.x = mousePos.x;
	mousePosParam.y = mousePos.y;
1970

1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983
	IDropTarget_DragEnter(trackerInfo->curDragTarget,
			      trackerInfo->dataObject,
			      keyState,
			      mousePosParam,
			      trackerInfo->pdwEffect);
      }
    }
    else
    {
      /*
       * The mouse is not over a window so we don't track anything.
       */
      trackerInfo->curDragTargetHWND = 0;
1984
      trackerInfo->curTargetHWND     = 0;
1985 1986 1987 1988 1989
      trackerInfo->curDragTarget     = 0;
    }
  }

  /*
1990 1991
   * Now that we have done that, we have to tell the source to give
   * us feedback on the work being done by the target.  If we don't
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
   * have a target, simulate no effect.
   */
  if (trackerInfo->curDragTarget==0)
  {
    *trackerInfo->pdwEffect = DROPEFFECT_NONE;
  }

  hr = IDropSource_GiveFeedback(trackerInfo->dropSource,
  				*trackerInfo->pdwEffect);

  /*
   * When we ask for feedback from the drop source, sometimes it will
   * do all the necessary work and sometimes it will not handle it
   * when that's the case, we must display the standard drag and drop
   * cursors.
   */
  if (hr==DRAGDROP_S_USEDEFAULTCURSORS)
  {
2010
    if (*trackerInfo->pdwEffect & DROPEFFECT_MOVE)
2011
    {
2012 2013 2014 2015 2016 2017 2018 2019 2020
      SetCursor(LoadCursorA(OLE32_hInstance, MAKEINTRESOURCEA(1)));
    }
    else if (*trackerInfo->pdwEffect & DROPEFFECT_COPY)
    {
      SetCursor(LoadCursorA(OLE32_hInstance, MAKEINTRESOURCEA(2)));
    }
    else if (*trackerInfo->pdwEffect & DROPEFFECT_LINK)
    {
      SetCursor(LoadCursorA(OLE32_hInstance, MAKEINTRESOURCEA(3)));
2021 2022 2023
    }
    else
    {
2024
      SetCursor(LoadCursorA(OLE32_hInstance, MAKEINTRESOURCEA(0)));
2025
    }
2026
  }
2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046
}

/***
 * OLEDD_TrackStateChange()
 *
 * This method is invoked while a drag and drop operation is in effect.
 * It is used to notify the drop target/drop source callbacks when
 * the state of the keyboard or mouse button change.
 *
 * params:
 *    trackerInfo - Pointer to the structure identifying the
 *                  drag & drop operation that is currently
 *                  active.
 *    mousePos    - Current position of the mouse in screen
 *                  coordinates.
 *    keyState    - Contains the state of the shift keys and the
 *                  mouse buttons (MK_LBUTTON and the like)
 */
static void OLEDD_TrackStateChange(
  TrackerWindowInfo* trackerInfo,
2047
  POINT            mousePos,
2048 2049 2050 2051 2052 2053 2054
  DWORD              keyState)
{
  /*
   * Ask the drop source what to do with the operation.
   */
  trackerInfo->returnValue = IDropSource_QueryContinueDrag(
			       trackerInfo->dropSource,
2055
			       trackerInfo->escPressed,
2056
			       keyState);
2057

2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069
  /*
   * All the return valued will stop the operation except the S_OK
   * return value.
   */
  if (trackerInfo->returnValue!=S_OK)
  {
    /*
     * Make sure the message loop in DoDragDrop stops
     */
    trackerInfo->trackingDone = TRUE;

    /*
2070
     * Release the mouse in case the drop target decides to show a popup
2071 2072 2073
     * or a menu or something.
     */
    ReleaseCapture();
2074

2075
    /*
2076
     * If we end-up over a target, drop the object in the target or
2077 2078 2079 2080 2081 2082 2083
     * inform the target that the operation was cancelled.
     */
    if (trackerInfo->curDragTarget!=0)
    {
      switch (trackerInfo->returnValue)
      {
	/*
2084
	 * If the source wants us to complete the operation, we tell
2085 2086 2087 2088 2089
	 * the drop target that we just dropped the object in it.
	 */
        case DRAGDROP_S_DROP:
	{
	  POINTL  mousePosParam;
2090

2091
	  /*
2092
	   * The documentation tells me that the coordinate should be
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	   * in the target window's coordinate space. However, the tests
	   * I made tell me the coordinates should be in screen coordinates.
	   */
	  mousePosParam.x = mousePos.x;
	  mousePosParam.y = mousePos.y;
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	  IDropTarget_Drop(trackerInfo->curDragTarget,
			   trackerInfo->dataObject,
			   keyState,
			   mousePosParam,
			   trackerInfo->pdwEffect);
	  break;
	}
	/*
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	 * If the source told us that we should cancel, fool the drop
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	 * target by telling it that the mouse left it's window.
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	 * Also set the drop effect to "NONE" in case the application
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	 * ignores the result of DoDragDrop.
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	 */
        case DRAGDROP_S_CANCEL:
	  IDropTarget_DragLeave(trackerInfo->curDragTarget);
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	  *trackerInfo->pdwEffect = DROPEFFECT_NONE;
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	  break;
      }
    }
  }
}

/***
 * OLEDD_GetButtonState()
 *
 * This method will use the current state of the keyboard to build
 * a button state mask equivalent to the one passed in the
 * WM_MOUSEMOVE wParam.
 */
static DWORD OLEDD_GetButtonState()
{
  BYTE  keyboardState[256];
  DWORD keyMask = 0;

  GetKeyboardState(keyboardState);

  if ( (keyboardState[VK_SHIFT] & 0x80) !=0)
    keyMask |= MK_SHIFT;

  if ( (keyboardState[VK_CONTROL] & 0x80) !=0)
    keyMask |= MK_CONTROL;

  if ( (keyboardState[VK_LBUTTON] & 0x80) !=0)
    keyMask |= MK_LBUTTON;

  if ( (keyboardState[VK_RBUTTON] & 0x80) !=0)
    keyMask |= MK_RBUTTON;

  if ( (keyboardState[VK_MBUTTON] & 0x80) !=0)
    keyMask |= MK_MBUTTON;

  return keyMask;
}

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/***
 * OLEDD_GetButtonState()
 *
 * This method will read the default value of the registry key in
 * parameter and extract a DWORD value from it. The registry key value
 * can be in a string key or a DWORD key.
 *
 * params:
 *     regKey   - Key to read the default value from
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 *     pdwValue - Pointer to the location where the DWORD
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 *                value is returned. This value is not modified
 *                if the value is not found.
 */

static void OLEUTL_ReadRegistryDWORDValue(
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  HKEY   regKey,
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  DWORD* pdwValue)
{
  char  buffer[20];
  DWORD dwKeyType;
  DWORD cbData = 20;
  LONG  lres;

  lres = RegQueryValueExA(regKey,
			  "",
			  NULL,
			  &dwKeyType,
			  (LPBYTE)buffer,
			  &cbData);

  if (lres==ERROR_SUCCESS)
  {
    switch (dwKeyType)
    {
      case REG_DWORD:
	*pdwValue = *(DWORD*)buffer;
	break;
      case REG_EXPAND_SZ:
      case REG_MULTI_SZ:
      case REG_SZ:
	*pdwValue = (DWORD)strtoul(buffer, NULL, 10);
	break;
    }
  }
}
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/******************************************************************************
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 * OleDraw (OLE32.@)
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 *
 * The operation of this function is documented literally in the WinAPI
 * documentation to involve a QueryInterface for the IViewObject interface,
 * followed by a call to IViewObject::Draw.
 */
HRESULT WINAPI OleDraw(
	IUnknown *pUnk,
	DWORD dwAspect,
	HDC hdcDraw,
	LPCRECT lprcBounds)
{
  HRESULT hres;
  IViewObject *viewobject;

  hres = IUnknown_QueryInterface(pUnk,
				 &IID_IViewObject,
				 (void**)&viewobject);

  if (SUCCEEDED(hres))
  {
    RECTL rectl;

    rectl.left = lprcBounds->left;
    rectl.right = lprcBounds->right;
    rectl.top = lprcBounds->top;
    rectl.bottom = lprcBounds->bottom;
    hres = IViewObject_Draw(viewobject, dwAspect, -1, 0, 0, 0, hdcDraw, &rectl, 0, 0, 0);

    IViewObject_Release(viewobject);
    return hres;
  }
  else
  {
    return DV_E_NOIVIEWOBJECT;
  }
}

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/******************************************************************************
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 * DllDebugObjectRPCHook (OLE32.@)
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 * turns on and off internal debugging,  pointer is only used on macintosh
 */

BOOL WINAPI DllDebugObjectRPCHook(BOOL b, void *dummy)
{
  FIXME("stub\n");
  return TRUE;
}