dlls/ole32/ole2.c

   1 /*
   2  *      OLE2 library
   3  *
   4  *      Copyright 1995  Martin von Loewis
   5  *      Copyright 1999  Francis Beaudet
   6  *      Copyright 1999  Noel Borthwick
   7  */
   8
   9 #include <assert.h>
  10 #include <stdlib.h>
  11 #include <stdio.h>
  12 #include <string.h>
  13
  14 #include "windef.h"
  15 #include "winbase.h"
  16 #include "wingdi.h"
  17 #include "winuser.h"
  18 #include "winerror.h"
  19 #include "ole2.h"
  20 #include "commctrl.h"
  21 #include "wine/obj_clientserver.h"
  22 #include "wine/winbase16.h"
  23 #include "wine/wingdi16.h"
  24 #include "wine/winuser16.h"
  25 #include "debugtools.h"
  26 #include "ole2ver.h"
  27 #include "winreg.h"
  28 #include "ole32_main.h"
  29
  30 DEFAULT_DEBUG_CHANNEL(ole);
  31 DECLARE_DEBUG_CHANNEL(accel);
  32
  33 /******************************************************************************
  34  * These are static/global variables and internal data structures that the
  35  * OLE module uses to maintain it's state.
  36  */
  37 typedef struct tagDropTargetNode
  38 {
  39   HWND          hwndTarget;
  40   IDropTarget*    dropTarget;
  41   struct tagDropTargetNode* prevDropTarget;
  42   struct tagDropTargetNode* nextDropTarget;
  43 } DropTargetNode;
  44
  45 typedef struct tagTrackerWindowInfo
  46 {
  47   IDataObject* dataObject;
  48   IDropSource* dropSource;
  49   DWORD        dwOKEffect;
  50   DWORD*       pdwEffect;
  51   BOOL       trackingDone;
  52   HRESULT      returnValue;
  53
  54   BOOL       escPressed;
  55   HWND       curDragTargetHWND;
  56   IDropTarget* curDragTarget;
  57 } TrackerWindowInfo;
  58
  59 typedef struct tagOleMenuDescriptor  /* OleMenuDescriptor */
  60 {
  61   HWND               hwndFrame;         /* The containers frame window */
  62   HWND               hwndActiveObject;  /* The active objects window */
  63   OLEMENUGROUPWIDTHS mgw;               /* OLE menu group widths for the shared menu */
  64   HMENU              hmenuCombined;     /* The combined menu */
  65   BOOL               bIsServerItem;     /* True if the currently open popup belongs to the server */
  66 } OleMenuDescriptor;
  67
  68 typedef struct tagOleMenuHookItem   /* OleMenu hook item in per thread hook list */
  69 {
  70   DWORD tid;                /* Thread Id  */
  71   HANDLE hHeap;             /* Heap this is allocated from */
  72   HHOOK GetMsg_hHook;       /* message hook for WH_GETMESSAGE */
  73   HHOOK CallWndProc_hHook;  /* message hook for WH_CALLWNDPROC */
  74   struct tagOleMenuHookItem *next;
  75 } OleMenuHookItem;
  76
  77 static OleMenuHookItem *hook_list;
  78
  79 /*
  80  * This is the lock count on the OLE library. It is controlled by the
  81  * OLEInitialize/OLEUninitialize methods.
  82  */
  83 static ULONG OLE_moduleLockCount = 0;
  84
  85 /*
  86  * Name of our registered window class.
  87  */
  88 static const char OLEDD_DRAGTRACKERCLASS[] = "WineDragDropTracker32";
  89
  90 /*
  91  * This is the head of the Drop target container.
  92  */
  93 static DropTargetNode* targetListHead = NULL;
  94
  95 /******************************************************************************
  96  * These are the prototypes of miscelaneous utility methods
  97  */
  98 static void OLEUTL_ReadRegistryDWORDValue(HKEY regKey, DWORD* pdwValue);
  99
 100 /******************************************************************************
 101  * These are the prototypes of the utility methods used to manage a shared menu
 102  */
 103 static void OLEMenu_Initialize();
 104 static void OLEMenu_UnInitialize();
 105 BOOL OLEMenu_InstallHooks( DWORD tid );
 106 BOOL OLEMenu_UnInstallHooks( DWORD tid );
 107 OleMenuHookItem * OLEMenu_IsHookInstalled( DWORD tid );
 108 static BOOL OLEMenu_FindMainMenuIndex( HMENU hMainMenu, HMENU hPopupMenu, UINT *pnPos );
 109 BOOL OLEMenu_SetIsServerMenu( HMENU hmenu, OleMenuDescriptor *pOleMenuDescriptor );
 110 LRESULT CALLBACK OLEMenu_CallWndProc(INT code, WPARAM wParam, LPARAM lParam);
 111 LRESULT CALLBACK OLEMenu_GetMsgProc(INT code, WPARAM wParam, LPARAM lParam);
 112
 113 /******************************************************************************
 114  * These are the prototypes of the OLE Clipboard initialization methods (in clipboard.c)
 115  */
 116 void OLEClipbrd_UnInitialize();
 117 void OLEClipbrd_Initialize();
 118
 119 /******************************************************************************
 120  * These are the prototypes of the utility methods used for OLE Drag n Drop
 121  */
 122 static void            OLEDD_Initialize();
 123 static void            OLEDD_UnInitialize();
 124 static void            OLEDD_InsertDropTarget(
 125                          DropTargetNode* nodeToAdd);
 126 static DropTargetNode* OLEDD_ExtractDropTarget(
 127                          HWND hwndOfTarget);
 128 static DropTargetNode* OLEDD_FindDropTarget(
 129                          HWND hwndOfTarget);
 130 static LRESULT WINAPI  OLEDD_DragTrackerWindowProc(
 131                          HWND   hwnd,
 132                          UINT   uMsg,
 133                          WPARAM wParam,
 134                          LPARAM   lParam);
 135 static void OLEDD_TrackMouseMove(
 136                          TrackerWindowInfo* trackerInfo,
 137                          POINT            mousePos,
 138                          DWORD              keyState);
 139 static void OLEDD_TrackStateChange(
 140                          TrackerWindowInfo* trackerInfo,
 141                          POINT            mousePos,
 142                          DWORD              keyState);
 143 static DWORD OLEDD_GetButtonState();
 144
 145
 146 /******************************************************************************
 147  *              OleBuildVersion [OLE2.1]
 148  */
 149 DWORD WINAPI OleBuildVersion(void)
 150 {
 151     TRACE("Returning version %d, build %d.\n", rmm, rup);
 152     return (rmm<<16)+rup;
 153 }
 154
 155 /***********************************************************************
 156  *           OleInitialize       (OLE2.2) (OLE32.108)
 157  */
 158 HRESULT WINAPI OleInitialize(LPVOID reserved)
 159 {
 160   HRESULT hr;
 161
 162   TRACE("(%p)\n", reserved);
 163
 164   /*
 165    * The first duty of the OleInitialize is to initialize the COM libraries.
 166    */
 167   hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
 168
 169   /*
 170    * If the CoInitializeEx call failed, the OLE libraries can't be
 171    * initialized.
 172    */
 173   if (FAILED(hr))
 174     return hr;
 175
 176   /*
 177    * Then, it has to initialize the OLE specific modules.
 178    * This includes:
 179    *     Clipboard
 180    *     Drag and Drop
 181    *     Object linking and Embedding
 182    *     In-place activation
 183    */
 184   if (OLE_moduleLockCount==0)
 185 {
 186     /*
 187      * Initialize the libraries.
 188      */
 189     TRACE("() - Initializing the OLE libraries\n");
 190
 191     /*
 192      * OLE Clipboard
 193      */
 194     OLEClipbrd_Initialize();
 195
 196     /*
 197      * Drag and Drop
 198      */
 199     OLEDD_Initialize();
 200
 201     /*
 202      * OLE shared menu
 203      */
 204     OLEMenu_Initialize();
 205 }
 206
 207   /*
 208    * Then, we increase the lock count on the OLE module.
 209    */
 210   OLE_moduleLockCount++;
 211
 212   return hr;
 213 }
 214
 215 /******************************************************************************
 216  *              CoGetCurrentProcess     [COMPOBJ.34] [OLE2.2][OLE32.108]
 217  *
 218  * NOTES
 219  *   Is DWORD really the correct return type for this function?
 220  */
 221 DWORD WINAPI CoGetCurrentProcess(void)
 222 {
 223         return GetCurrentProcessId();
 224 }
 225
 226 /******************************************************************************
 227  *              OleUninitialize [OLE2.3] [OLE32.131]
 228  */
 229 void WINAPI OleUninitialize(void)
 230 {
 231   TRACE("()\n");
 232
 233   /*
 234    * Decrease the lock count on the OLE module.
 235    */
 236   OLE_moduleLockCount--;
 237
 238   /*
 239    * If we hit the bottom of the lock stack, free the libraries.
 240    */
 241   if (OLE_moduleLockCount==0)
 242   {
 243     /*
 244      * Actually free the libraries.
 245      */
 246     TRACE("() - Freeing the last reference count\n");
 247
 248     /*
 249      * OLE Clipboard
 250      */
 251     OLEClipbrd_UnInitialize();
 252
 253     /*
 254      * Drag and Drop
 255      */
 256     OLEDD_UnInitialize();
 257
 258     /*
 259      * OLE shared menu
 260      */
 261     OLEMenu_UnInitialize();
 262   }
 263
 264   /*
 265    * Then, uninitialize the COM libraries.
 266    */
 267   CoUninitialize();
 268 }
 269
 270 /******************************************************************************
 271  *              CoRegisterMessageFilter [OLE32.38]
 272  */
 273 HRESULT WINAPI CoRegisterMessageFilter(
 274     LPMESSAGEFILTER lpMessageFilter,    /* [in] Pointer to interface */
 275     LPMESSAGEFILTER *lplpMessageFilter  /* [out] Indirect pointer to prior instance if non-NULL */
 276 ) {
 277     FIXME("stub\n");
 278     if (lplpMessageFilter) {
 279         *lplpMessageFilter = NULL;
 280     }
 281     return S_OK;
 282 }
 283
 284 /******************************************************************************
 285  *              OleInitializeWOW        [OLE32.109]
 286  */
 287 HRESULT WINAPI OleInitializeWOW(DWORD x) {
 288         FIXME("(0x%08lx),stub!\n",x);
 289         return 0;
 290 }
 291
 292 /***********************************************************************
 293  *           RegisterDragDrop16 (OLE2.35)
 294  */
 295 HRESULT WINAPI RegisterDragDrop16(
 296         HWND16 hwnd,
 297         LPDROPTARGET pDropTarget
 298 ) {
 299         FIXME("(0x%04x,%p),stub!\n",hwnd,pDropTarget);
 300         return S_OK;
 301 }
 302
 303 /***********************************************************************
 304  *           RegisterDragDrop (OLE32.139)
 305  */
 306 HRESULT WINAPI RegisterDragDrop(
 307         HWND hwnd,
 308         LPDROPTARGET pDropTarget)
 309 {
 310   DropTargetNode* dropTargetInfo;
 311
 312   TRACE("(0x%x,%p)\n", hwnd, pDropTarget);
 313
 314   /*
 315    * First, check if the window is already registered.
 316    */
 317   dropTargetInfo = OLEDD_FindDropTarget(hwnd);
 318
 319   if (dropTargetInfo!=NULL)
 320     return DRAGDROP_E_ALREADYREGISTERED;
 321
 322   /*
 323    * If it's not there, we can add it. We first create a node for it.
 324    */
 325   dropTargetInfo = HeapAlloc(GetProcessHeap(), 0, sizeof(DropTargetNode));
 326
 327   if (dropTargetInfo==NULL)
 328     return E_OUTOFMEMORY;
 329
 330   dropTargetInfo->hwndTarget     = hwnd;
 331   dropTargetInfo->prevDropTarget = NULL;
 332   dropTargetInfo->nextDropTarget = NULL;
 333
 334   /*
 335    * Don't forget that this is an interface pointer, need to nail it down since
 336    * we keep a copy of it.
 337    */
 338   dropTargetInfo->dropTarget  = pDropTarget;
 339   IDropTarget_AddRef(dropTargetInfo->dropTarget);
 340
 341   OLEDD_InsertDropTarget(dropTargetInfo);
 342
 343         return S_OK;
 344 }
 345
 346 /***********************************************************************
 347  *           RevokeDragDrop16 (OLE2.36)
 348  */
 349 HRESULT WINAPI RevokeDragDrop16(
 350         HWND16 hwnd
 351 ) {
 352         FIXME("(0x%04x),stub!\n",hwnd);
 353         return S_OK;
 354 }
 355
 356 /***********************************************************************
 357  *           RevokeDragDrop (OLE32.141)
 358  */
 359 HRESULT WINAPI RevokeDragDrop(
 360         HWND hwnd)
 361 {
 362   DropTargetNode* dropTargetInfo;
 363
 364   TRACE("(0x%x)\n", hwnd);
 365
 366   /*
 367    * First, check if the window is already registered.
 368    */
 369   dropTargetInfo = OLEDD_ExtractDropTarget(hwnd);
 370
 371   /*
 372    * If it ain't in there, it's an error.
 373    */
 374   if (dropTargetInfo==NULL)
 375     return DRAGDROP_E_NOTREGISTERED;
 376
 377   /*
 378    * If it's in there, clean-up it's used memory and
 379    * references
 380    */
 381   IDropTarget_Release(dropTargetInfo->dropTarget);
 382   HeapFree(GetProcessHeap(), 0, dropTargetInfo);
 383
 384         return S_OK;
 385 }
 386
 387 /***********************************************************************
 388  *           OleRegGetUserType (OLE32.122)
 389  *
 390  * This implementation of OleRegGetUserType ignores the dwFormOfType
 391  * parameter and always returns the full name of the object. This is
 392  * not too bad since this is the case for many objects because of the
 393  * way they are registered.
 394  */
 395 HRESULT WINAPI OleRegGetUserType(
 396         REFCLSID clsid,
 397         DWORD dwFormOfType,
 398         LPOLESTR* pszUserType)
 399 {
 400   char    keyName[60];
 401   DWORD   dwKeyType;
 402   DWORD   cbData;
 403   HKEY    clsidKey;
 404   LONG    hres;
 405   LPBYTE  buffer;
 406   HRESULT retVal;
 407   /*
 408    * Initialize the out parameter.
 409    */
 410   *pszUserType = NULL;
 411
 412   /*
 413    * Build the key name we're looking for
 414    */
 415   sprintf( keyName, "CLSID\\{%08lx-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}\\",
 416            clsid->Data1, clsid->Data2, clsid->Data3,
 417            clsid->Data4[0], clsid->Data4[1], clsid->Data4[2], clsid->Data4[3],
 418            clsid->Data4[4], clsid->Data4[5], clsid->Data4[6], clsid->Data4[7] );
 419
 420   TRACE("(%s, %ld, %p)\n", keyName, dwFormOfType, pszUserType);
 421
 422   /*
 423    * Open the class id Key
 424    */
 425   hres = RegOpenKeyA(HKEY_CLASSES_ROOT,
 426                      keyName,
 427                      &clsidKey);
 428
 429   if (hres != ERROR_SUCCESS)
 430     return REGDB_E_CLASSNOTREG;
 431
 432   /*
 433    * Retrieve the size of the name string.
 434    */
 435   cbData = 0;
 436
 437   hres = RegQueryValueExA(clsidKey,
 438                           "",
 439                           NULL,
 440                           &dwKeyType,
 441                           NULL,
 442                           &cbData);
 443
 444   if (hres!=ERROR_SUCCESS)
 445   {
 446     RegCloseKey(clsidKey);
 447     return REGDB_E_READREGDB;
 448   }
 449
 450   /*
 451    * Allocate a buffer for the registry value.
 452    */
 453   *pszUserType = CoTaskMemAlloc(cbData*2);
 454
 455   if (*pszUserType==NULL)
 456   {
 457     RegCloseKey(clsidKey);
 458     return E_OUTOFMEMORY;
 459   }
 460
 461   buffer = HeapAlloc(GetProcessHeap(), 0, cbData);
 462
 463   if (buffer == NULL)
 464   {
 465     RegCloseKey(clsidKey);
 466     CoTaskMemFree(*pszUserType);
 467     *pszUserType=NULL;
 468     return E_OUTOFMEMORY;
 469   }
 470
 471   hres = RegQueryValueExA(clsidKey,
 472                           "",
 473                           NULL,
 474                           &dwKeyType,
 475                           buffer,
 476                           &cbData);
 477
 478   RegCloseKey(clsidKey);
 479
 480
 481   if (hres!=ERROR_SUCCESS)
 482   {
 483     CoTaskMemFree(*pszUserType);
 484     *pszUserType=NULL;
 485
 486     retVal = REGDB_E_READREGDB;
 487   }
 488   else
 489   {
 490     MultiByteToWideChar( CP_ACP, 0, buffer, -1, *pszUserType, cbData /*FIXME*/ );
 491     retVal = S_OK;
 492   }
 493   HeapFree(GetProcessHeap(), 0, buffer);
 494
 495   return retVal;
 496 }
 497
 498 /***********************************************************************
 499  * DoDragDrop [OLE32.65]
 500  */
 501 HRESULT WINAPI DoDragDrop (
 502   IDataObject *pDataObject,  /* [in] ptr to the data obj           */
 503   IDropSource* pDropSource,  /* [in] ptr to the source obj         */
 504   DWORD       dwOKEffect,    /* [in] effects allowed by the source */
 505   DWORD       *pdwEffect)    /* [out] ptr to effects of the source */
 506 {
 507   TrackerWindowInfo trackerInfo;
 508   HWND            hwndTrackWindow;
 509   MSG             msg;
 510
 511   TRACE("(DataObject %p, DropSource %p)\n", pDataObject, pDropSource);
 512
 513   /*
 514    * Setup the drag n drop tracking window.
 515    */
 516   trackerInfo.dataObject        = pDataObject;
 517   trackerInfo.dropSource        = pDropSource;
 518   trackerInfo.dwOKEffect        = dwOKEffect;
 519   trackerInfo.pdwEffect         = pdwEffect;
 520   trackerInfo.trackingDone      = FALSE;
 521   trackerInfo.escPressed        = FALSE;
 522   trackerInfo.curDragTargetHWND = 0;
 523   trackerInfo.curDragTarget     = 0;
 524
 525   hwndTrackWindow = CreateWindowA(OLEDD_DRAGTRACKERCLASS,
 526                                     "TrackerWindow",
 527                                     WS_POPUP,
 528                                     CW_USEDEFAULT, CW_USEDEFAULT,
 529                                     CW_USEDEFAULT, CW_USEDEFAULT,
 530                                     0,
 531                                     0,
 532                                     0,
 533                                     (LPVOID)&trackerInfo);
 534
 535   if (hwndTrackWindow!=0)
 536   {
 537     /*
 538      * Capture the mouse input
 539      */
 540     SetCapture(hwndTrackWindow);
 541
 542     /*
 543      * Pump messages. All mouse input should go the the capture window.
 544      */
 545     while (!trackerInfo.trackingDone && GetMessageA(&msg, 0, 0, 0) )
 546     {
 547       if ( (msg.message >= WM_KEYFIRST) &&
 548            (msg.message <= WM_KEYLAST) )
 549       {
 550         /*
 551          * When keyboard messages are sent to windows on this thread, we
 552          * want to ignore notify the drop source that the state changed.
 553          * in the case of the Escape key, we also notify the drop source
 554          * we give it a special meaning.
 555          */
 556         if ( (msg.message==WM_KEYDOWN) &&
 557              (msg.wParam==VK_ESCAPE) )
 558         {
 559           trackerInfo.escPressed = TRUE;
 560         }
 561
 562         /*
 563          * Notify the drop source.
 564          */
 565         OLEDD_TrackStateChange(&trackerInfo,
 566                                msg.pt,
 567                                OLEDD_GetButtonState());
 568       }
 569       else
 570       {
 571         /*
 572          * Dispatch the messages only when it's not a keyboard message.
 573          */
 574         DispatchMessageA(&msg);
 575       }
 576     }
 577
 578     /*
 579      * Destroy the temporary window.
 580      */
 581     DestroyWindow(hwndTrackWindow);
 582
 583     return trackerInfo.returnValue;
 584   }
 585
 586   return E_FAIL;
 587 }
 588
 589 /***********************************************************************
 590  * OleQueryLinkFromData [OLE32.118]
 591  */
 592 HRESULT WINAPI OleQueryLinkFromData(
 593   IDataObject* pSrcDataObject)
 594 {
 595   FIXME("(%p),stub!\n", pSrcDataObject);
 596   return S_OK;
 597 }
 598
 599 /***********************************************************************
 600  * OleRegGetMiscStatus [OLE32.121]
 601  */
 602 HRESULT WINAPI OleRegGetMiscStatus(
 603   REFCLSID clsid,
 604   DWORD    dwAspect,
 605   DWORD*   pdwStatus)
 606 {
 607   char    keyName[60];
 608   HKEY    clsidKey;
 609   HKEY    miscStatusKey;
 610   HKEY    aspectKey;
 611   LONG    result;
 612
 613   /*
 614    * Initialize the out parameter.
 615    */
 616   *pdwStatus = 0;
 617
 618   /*
 619    * Build the key name we're looking for
 620    */
 621   sprintf( keyName, "CLSID\\{%08lx-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}\\",
 622            clsid->Data1, clsid->Data2, clsid->Data3,
 623            clsid->Data4[0], clsid->Data4[1], clsid->Data4[2], clsid->Data4[3],
 624            clsid->Data4[4], clsid->Data4[5], clsid->Data4[6], clsid->Data4[7] );
 625
 626   TRACE("(%s, %ld, %p)\n", keyName, dwAspect, pdwStatus);
 627
 628   /*
 629    * Open the class id Key
 630    */
 631   result = RegOpenKeyA(HKEY_CLASSES_ROOT,
 632                        keyName,
 633                        &clsidKey);
 634
 635   if (result != ERROR_SUCCESS)
 636     return REGDB_E_CLASSNOTREG;
 637
 638   /*
 639    * Get the MiscStatus
 640    */
 641   result = RegOpenKeyA(clsidKey,
 642                        "MiscStatus",
 643                        &miscStatusKey);
 644
 645
 646   if (result != ERROR_SUCCESS)
 647   {
 648     RegCloseKey(clsidKey);
 649     return REGDB_E_READREGDB;
 650   }
 651
 652   /*
 653    * Read the default value
 654    */
 655   OLEUTL_ReadRegistryDWORDValue(miscStatusKey, pdwStatus);
 656
 657   /*
 658    * Open the key specific to the requested aspect.
 659    */
 660   sprintf(keyName, "%ld", dwAspect);
 661
 662   result = RegOpenKeyA(miscStatusKey,
 663                        keyName,
 664                        &aspectKey);
 665
 666   if (result == ERROR_SUCCESS)
 667   {
 668     OLEUTL_ReadRegistryDWORDValue(aspectKey, pdwStatus);
 669     RegCloseKey(aspectKey);
 670   }
 671
 672   /*
 673    * Cleanup
 674    */
 675   RegCloseKey(miscStatusKey);
 676   RegCloseKey(clsidKey);
 677
 678   return S_OK;
 679 }
 680
 681 /******************************************************************************
 682  *              OleSetContainedObject        [OLE32.128]
 683  */
 684 HRESULT WINAPI OleSetContainedObject(
 685   LPUNKNOWN pUnknown,
 686   BOOL      fContained)
 687 {
 688   IRunnableObject* runnable = NULL;
 689   HRESULT          hres;
 690
 691   TRACE("(%p,%x), stub!\n", pUnknown, fContained);
 692
 693   hres = IUnknown_QueryInterface(pUnknown,
 694                                  &IID_IRunnableObject,
 695                                  (void**)&runnable);
 696
 697   if (SUCCEEDED(hres))
 698   {
 699     hres = IRunnableObject_SetContainedObject(runnable, fContained);
 700
 701     IRunnableObject_Release(runnable);
 702
 703     return hres;
 704   }
 705
 706   return S_OK;
 707 }
 708
 709 /******************************************************************************
 710  *              OleLoad        [OLE32.112]
 711  */
 712 HRESULT WINAPI OleLoad(
 713   LPSTORAGE       pStg,
 714   REFIID          riid,
 715   LPOLECLIENTSITE pClientSite,
 716   LPVOID*         ppvObj)
 717 {
 718   IPersistStorage* persistStorage = NULL;
 719   IOleObject*      oleObject      = NULL;
 720   STATSTG          storageInfo;
 721   HRESULT          hres;
 722
 723   TRACE("(%p,%p,%p,%p)\n", pStg, riid, pClientSite, ppvObj);
 724
 725   /*
 726    * TODO, Conversion ... OleDoAutoConvert
 727    */
 728
 729   /*
 730    * Get the class ID for the object.
 731    */
 732   hres = IStorage_Stat(pStg, &storageInfo, STATFLAG_NONAME);
 733
 734   /*
 735    * Now, try and create the handler for the object
 736    */
 737   hres = CoCreateInstance(&storageInfo.clsid,
 738                           NULL,
 739                           CLSCTX_INPROC_HANDLER,
 740                           &IID_IOleObject,
 741                           (void**)&oleObject);
 742
 743   /*
 744    * If that fails, as it will most times, load the default
 745    * OLE handler.
 746    */
 747   if (FAILED(hres))
 748   {
 749     hres = OleCreateDefaultHandler(&storageInfo.clsid,
 750                                    NULL,
 751                                    &IID_IOleObject,
 752                                    (void**)&oleObject);
 753   }
 754
 755   /*
 756    * If we couldn't find a handler... this is bad. Abort the whole thing.
 757    */
 758   if (FAILED(hres))
 759     return hres;
 760
 761   /*
 762    * Inform the new object of it's client site.
 763    */
 764   hres = IOleObject_SetClientSite(oleObject, pClientSite);
 765
 766   /*
 767    * Initialize the object with it's IPersistStorage interface.
 768    */
 769   hres = IOleObject_QueryInterface(oleObject,
 770                                    &IID_IPersistStorage,
 771                                    (void**)&persistStorage);
 772
 773   if (SUCCEEDED(hres))
 774   {
 775     IPersistStorage_Load(persistStorage, pStg);
 776
 777     IPersistStorage_Release(persistStorage);
 778     persistStorage = NULL;
 779   }
 780
 781   /*
 782    * Return the requested interface to the caller.
 783    */
 784   hres = IOleObject_QueryInterface(oleObject, riid, ppvObj);
 785
 786   /*
 787    * Cleanup interfaces used internally
 788    */
 789   IOleObject_Release(oleObject);
 790
 791   return hres;
 792 }
 793
 794 /***********************************************************************
 795  *           OleSave     [OLE32.124]
 796  */
 797 HRESULT WINAPI OleSave(
 798   LPPERSISTSTORAGE pPS,
 799   LPSTORAGE        pStg,
 800   BOOL             fSameAsLoad)
 801 {
 802   HRESULT hres;
 803   CLSID   objectClass;
 804
 805   TRACE("(%p,%p,%x)\n", pPS, pStg, fSameAsLoad);
 806
 807   /*
 808    * First, we transfer the class ID (if available)
 809    */
 810   hres = IPersistStorage_GetClassID(pPS, &objectClass);
 811
 812   if (SUCCEEDED(hres))
 813   {
 814     WriteClassStg(pStg, &objectClass);
 815   }
 816
 817   /*
 818    * Then, we ask the object to save itself to the
 819    * storage. If it is successful, we commit the storage.
 820    */
 821   hres = IPersistStorage_Save(pPS, pStg, fSameAsLoad);
 822
 823   if (SUCCEEDED(hres))
 824   {
 825     IStorage_Commit(pStg,
 826                     STGC_DEFAULT);
 827   }
 828
 829   return hres;
 830 }
 831
 832
 833 /******************************************************************************
 834  *              OleLockRunning        [OLE32.114]
 835  */
 836 HRESULT WINAPI OleLockRunning(LPUNKNOWN pUnknown, BOOL fLock, BOOL fLastUnlockCloses)
 837 {
 838   IRunnableObject* runnable = NULL;
 839   HRESULT          hres;
 840
 841   TRACE("(%p,%x,%x)\n", pUnknown, fLock, fLastUnlockCloses);
 842
 843   hres = IUnknown_QueryInterface(pUnknown,
 844                                  &IID_IRunnableObject,
 845                                  (void**)&runnable);
 846
 847   if (SUCCEEDED(hres))
 848   {
 849     hres = IRunnableObject_LockRunning(runnable, fLock, fLastUnlockCloses);
 850
 851     IRunnableObject_Release(runnable);
 852
 853     return hres;
 854   }
 855   else
 856     return E_INVALIDARG;
 857 }
 858
 859
 860 /**************************************************************************
 861  * Internal methods to manage the shared OLE menu in response to the
 862  * OLE***MenuDescriptor API
 863  */
 864
 865 /***
 866  * OLEMenu_Initialize()
 867  *
 868  * Initializes the OLEMENU data structures.
 869  */
 870 static void OLEMenu_Initialize()
 871 {
 872 }
 873
 874 /***
 875  * OLEMenu_UnInitialize()
 876  *
 877  * Releases the OLEMENU data structures.
 878  */
 879 static void OLEMenu_UnInitialize()
 880 {
 881 }
 882
 883 /*************************************************************************
 884  * OLEMenu_InstallHooks
 885  * Install thread scope message hooks for WH_GETMESSAGE and WH_CALLWNDPROC
 886  *
 887  * RETURNS: TRUE if message hooks were succesfully installed
 888  *          FALSE on failure
 889  */
 890 BOOL OLEMenu_InstallHooks( DWORD tid )
 891 {
 892   OleMenuHookItem *pHookItem = NULL;
 893
 894   /* Create an entry for the hook table */
 895   if ( !(pHookItem = HeapAlloc(GetProcessHeap(), 0,
 896                                sizeof(OleMenuHookItem)) ) )
 897     return FALSE;
 898
 899   pHookItem->tid = tid;
 900   pHookItem->hHeap = GetProcessHeap();
 901
 902   /* Install a thread scope message hook for WH_GETMESSAGE */
 903   pHookItem->GetMsg_hHook = SetWindowsHookExA( WH_GETMESSAGE, OLEMenu_GetMsgProc,
 904                                                0, GetCurrentThreadId() );
 905   if ( !pHookItem->GetMsg_hHook )
 906     goto CLEANUP;
 907
 908   /* Install a thread scope message hook for WH_CALLWNDPROC */
 909   pHookItem->CallWndProc_hHook = SetWindowsHookExA( WH_CALLWNDPROC, OLEMenu_CallWndProc,
 910                                                     0, GetCurrentThreadId() );
 911   if ( !pHookItem->CallWndProc_hHook )
 912     goto CLEANUP;
 913
 914   /* Insert the hook table entry */
 915   pHookItem->next = hook_list;
 916   hook_list = pHookItem;
 917
 918   return TRUE;
 919
 920 CLEANUP:
 921   /* Unhook any hooks */
 922   if ( pHookItem->GetMsg_hHook )
 923     UnhookWindowsHookEx( pHookItem->GetMsg_hHook );
 924   if ( pHookItem->CallWndProc_hHook )
 925     UnhookWindowsHookEx( pHookItem->CallWndProc_hHook );
 926   /* Release the hook table entry */
 927   HeapFree(pHookItem->hHeap, 0, pHookItem );
 928
 929   return FALSE;
 930 }
 931
 932 /*************************************************************************
 933  * OLEMenu_UnInstallHooks
 934  * UnInstall thread scope message hooks for WH_GETMESSAGE and WH_CALLWNDPROC
 935  *
 936  * RETURNS: TRUE if message hooks were succesfully installed
 937  *          FALSE on failure
 938  */
 939 BOOL OLEMenu_UnInstallHooks( DWORD tid )
 940 {
 941   OleMenuHookItem *pHookItem = NULL;
 942   OleMenuHookItem **ppHook = &hook_list;
 943
 944   while (*ppHook)
 945   {
 946       if ((*ppHook)->tid == tid)
 947       {
 948           pHookItem = *ppHook;
 949           *ppHook = pHookItem->next;
 950           break;
 951       }
 952       ppHook = &(*ppHook)->next;
 953   }
 954   if (!pHookItem) return FALSE;
 955
 956   /* Uninstall the hooks installed for this thread */
 957   if ( !UnhookWindowsHookEx( pHookItem->GetMsg_hHook ) )
 958     goto CLEANUP;
 959   if ( !UnhookWindowsHookEx( pHookItem->CallWndProc_hHook ) )
 960     goto CLEANUP;
 961
 962   /* Release the hook table entry */
 963   HeapFree(pHookItem->hHeap, 0, pHookItem );
 964
 965   return TRUE;
 966
 967 CLEANUP:
 968   /* Release the hook table entry */
 969   if (pHookItem)
 970     HeapFree(pHookItem->hHeap, 0, pHookItem );
 971
 972   return FALSE;
 973 }
 974
 975 /*************************************************************************
 976  * OLEMenu_IsHookInstalled
 977  * Tests if OLEMenu hooks have been installed for a thread
 978  *
 979  * RETURNS: The pointer and index of the hook table entry for the tid
 980  *          NULL and -1 for the index if no hooks were installed for this thread
 981  */
 982 OleMenuHookItem * OLEMenu_IsHookInstalled( DWORD tid )
 983 {
 984   OleMenuHookItem *pHookItem = NULL;
 985
 986   /* Do a simple linear search for an entry whose tid matches ours.
 987    * We really need a map but efficiency is not a concern here. */
 988   for (pHookItem = hook_list; pHookItem; pHookItem = pHookItem->next)
 989   {
 990     if ( tid == pHookItem->tid )
 991       return pHookItem;
 992   }
 993
 994   return NULL;
 995 }
 996
 997 /***********************************************************************
 998  *           OLEMenu_FindMainMenuIndex
 999  *
1000  * Used by OLEMenu API to find the top level group a menu item belongs to.
1001  * On success pnPos contains the index of the item in the top level menu group
1002  *
1003  * RETURNS: TRUE if the ID was found, FALSE on failure
1004  */
1005 static BOOL OLEMenu_FindMainMenuIndex( HMENU hMainMenu, HMENU hPopupMenu, UINT *pnPos )
1006 {
1007   UINT i, nItems;
1008
1009   nItems = GetMenuItemCount( hMainMenu );
1010
1011   for (i = 0; i < nItems; i++)
1012   {
1013     HMENU hsubmenu;
1014
1015     /*  Is the current item a submenu? */
1016     if ( (hsubmenu = GetSubMenu(hMainMenu, i)) )
1017     {
1018       /* If the handle is the same we're done */
1019       if ( hsubmenu == hPopupMenu )
1020       {
1021         if (pnPos)
1022           *pnPos = i;
1023         return TRUE;
1024       }
1025       /* Recursively search without updating pnPos */
1026       else if ( OLEMenu_FindMainMenuIndex( hsubmenu, hPopupMenu, NULL ) )
1027       {
1028         if (pnPos)
1029           *pnPos = i;
1030         return TRUE;
1031       }
1032     }
1033   }
1034
1035   return FALSE;
1036 }
1037
1038 /***********************************************************************
1039  *           OLEMenu_SetIsServerMenu
1040  *
1041  * Checks whether a popup menu belongs to a shared menu group which is
1042  * owned by the server, and sets the menu descriptor state accordingly.
1043  * All menu messages from these groups should be routed to the server.
1044  *
1045  * RETURNS: TRUE if the popup menu is part of a server owned group
1046  *          FASE if the popup menu is part of a container owned group
1047  */
1048 BOOL OLEMenu_SetIsServerMenu( HMENU hmenu, OleMenuDescriptor *pOleMenuDescriptor )
1049 {
1050   UINT nPos = 0, nWidth, i;
1051
1052   pOleMenuDescriptor->bIsServerItem = FALSE;
1053
1054   /* Don't bother searching if the popup is the combined menu itself */
1055   if ( hmenu == pOleMenuDescriptor->hmenuCombined )
1056     return FALSE;
1057
1058   /* Find the menu item index in the shared OLE menu that this item belongs to */
1059   if ( !OLEMenu_FindMainMenuIndex( pOleMenuDescriptor->hmenuCombined, hmenu,  &nPos ) )
1060     return FALSE;
1061
1062   /* The group widths array has counts for the number of elements
1063    * in the groups File, Edit, Container, Object, Window, Help.
1064    * The Edit, Object & Help groups belong to the server object
1065    * and the other three belong to the container.
1066    * Loop thru the group widths and locate the group we are a member of.
1067    */
1068   for ( i = 0, nWidth = 0; i < 6; i++ )
1069   {
1070     nWidth += pOleMenuDescriptor->mgw.width[i];
1071     if ( nPos < nWidth )
1072     {
1073       /* Odd elements are server menu widths */
1074       pOleMenuDescriptor->bIsServerItem = (i%2) ? TRUE : FALSE;
1075       break;
1076     }
1077   }
1078
1079   return pOleMenuDescriptor->bIsServerItem;
1080 }
1081
1082 /*************************************************************************
1083  * OLEMenu_CallWndProc
1084  * Thread scope WH_CALLWNDPROC hook proc filter function (callback)
1085  * This is invoked from a message hook installed in OleSetMenuDescriptor.
1086  */
1087 LRESULT CALLBACK OLEMenu_CallWndProc(INT code, WPARAM wParam, LPARAM lParam)
1088 {
1089   LPCWPSTRUCT pMsg = NULL;
1090   HOLEMENU hOleMenu = 0;
1091   OleMenuDescriptor *pOleMenuDescriptor = NULL;
1092   OleMenuHookItem *pHookItem = NULL;
1093   WORD fuFlags;
1094
1095   TRACE("%i, %04x, %08x\n", code, wParam, (unsigned)lParam );
1096
1097   /* Check if we're being asked to process the message */
1098   if ( HC_ACTION != code )
1099     goto NEXTHOOK;
1100
1101   /* Retrieve the current message being dispatched from lParam */
1102   pMsg = (LPCWPSTRUCT)lParam;
1103
1104   /* Check if the message is destined for a window we are interested in:
1105    * If the window has an OLEMenu property we may need to dispatch
1106    * the menu message to its active objects window instead. */
1107
1108   hOleMenu = (HOLEMENU)GetPropA( pMsg->hwnd, "PROP_OLEMenuDescriptor" );
1109   if ( !hOleMenu )
1110     goto NEXTHOOK;
1111
1112   /* Get the menu descriptor */
1113   pOleMenuDescriptor = (OleMenuDescriptor *) GlobalLock( hOleMenu );
1114   if ( !pOleMenuDescriptor ) /* Bad descriptor! */
1115     goto NEXTHOOK;
1116
1117   /* Process menu messages */
1118   switch( pMsg->message )
1119   {
1120     case WM_INITMENU:
1121     {
1122       /* Reset the menu descriptor state */
1123       pOleMenuDescriptor->bIsServerItem = FALSE;
1124
1125       /* Send this message to the server as well */
1126       SendMessageA( pOleMenuDescriptor->hwndActiveObject,
1127                   pMsg->message, pMsg->wParam, pMsg->lParam );
1128       goto NEXTHOOK;
1129     }
1130
1131     case WM_INITMENUPOPUP:
1132     {
1133       /* Save the state for whether this is a server owned menu */
1134       OLEMenu_SetIsServerMenu( (HMENU)pMsg->wParam, pOleMenuDescriptor );
1135       break;
1136     }
1137
1138     case WM_MENUSELECT:
1139     {
1140       fuFlags = HIWORD(pMsg->wParam);  /* Get flags */
1141       if ( fuFlags & MF_SYSMENU )
1142          goto NEXTHOOK;
1143
1144       /* Save the state for whether this is a server owned popup menu */
1145       else if ( fuFlags & MF_POPUP )
1146         OLEMenu_SetIsServerMenu( (HMENU)pMsg->lParam, pOleMenuDescriptor );
1147
1148       break;
1149     }
1150
1151     case WM_DRAWITEM:
1152     {
1153       LPDRAWITEMSTRUCT lpdis = (LPDRAWITEMSTRUCT) pMsg->lParam;
1154       if ( pMsg->wParam != 0 || lpdis->CtlType != ODT_MENU )
1155         goto NEXTHOOK;  /* Not a menu message */
1156
1157       break;
1158     }
1159
1160     default:
1161       goto NEXTHOOK;
1162   }
1163
1164   /* If the message was for the server dispatch it accordingly */
1165   if ( pOleMenuDescriptor->bIsServerItem )
1166   {
1167     SendMessageA( pOleMenuDescriptor->hwndActiveObject,
1168                   pMsg->message, pMsg->wParam, pMsg->lParam );
1169   }
1170
1171 NEXTHOOK:
1172   if ( pOleMenuDescriptor )
1173     GlobalUnlock( hOleMenu );
1174
1175   /* Lookup the hook item for the current thread */
1176   if ( !( pHookItem = OLEMenu_IsHookInstalled( GetCurrentThreadId() ) ) )
1177   {
1178     /* This should never fail!! */
1179     WARN("could not retrieve hHook for current thread!\n" );
1180     return 0;
1181   }
1182
1183   /* Pass on the message to the next hooker */
1184   return CallNextHookEx( pHookItem->CallWndProc_hHook, code, wParam, lParam );
1185 }
1186
1187 /*************************************************************************
1188  * OLEMenu_GetMsgProc
1189  * Thread scope WH_GETMESSAGE hook proc filter function (callback)
1190  * This is invoked from a message hook installed in OleSetMenuDescriptor.
1191  */
1192 LRESULT CALLBACK OLEMenu_GetMsgProc(INT code, WPARAM wParam, LPARAM lParam)
1193 {
1194   LPMSG pMsg = NULL;
1195   HOLEMENU hOleMenu = 0;
1196   OleMenuDescriptor *pOleMenuDescriptor = NULL;
1197   OleMenuHookItem *pHookItem = NULL;
1198   WORD wCode;
1199
1200   TRACE("%i, %04x, %08x\n", code, wParam, (unsigned)lParam );
1201
1202   /* Check if we're being asked to process a  messages */
1203   if ( HC_ACTION != code )
1204     goto NEXTHOOK;
1205
1206   /* Retrieve the current message being dispatched from lParam */
1207   pMsg = (LPMSG)lParam;
1208
1209   /* Check if the message is destined for a window we are interested in:
1210    * If the window has an OLEMenu property we may need to dispatch
1211    * the menu message to its active objects window instead. */
1212
1213   hOleMenu = (HOLEMENU)GetPropA( pMsg->hwnd, "PROP_OLEMenuDescriptor" );
1214   if ( !hOleMenu )
1215     goto NEXTHOOK;
1216
1217   /* Process menu messages */
1218   switch( pMsg->message )
1219   {
1220     case WM_COMMAND:
1221     {
1222       wCode = HIWORD(pMsg->wParam);  /* Get notification code */
1223       if ( wCode )
1224         goto NEXTHOOK;  /* Not a menu message */
1225       break;
1226     }
1227     default:
1228       goto NEXTHOOK;
1229   }
1230
1231   /* Get the menu descriptor */
1232   pOleMenuDescriptor = (OleMenuDescriptor *) GlobalLock( hOleMenu );
1233   if ( !pOleMenuDescriptor ) /* Bad descriptor! */
1234     goto NEXTHOOK;
1235
1236   /* If the message was for the server dispatch it accordingly */
1237   if ( pOleMenuDescriptor->bIsServerItem )
1238   {
1239     /* Change the hWnd in the message to the active objects hWnd.
1240      * The message loop which reads this message will automatically
1241      * dispatch it to the embedded objects window. */
1242     pMsg->hwnd = pOleMenuDescriptor->hwndActiveObject;
1243   }
1244
1245 NEXTHOOK:
1246   if ( pOleMenuDescriptor )
1247     GlobalUnlock( hOleMenu );
1248
1249   /* Lookup the hook item for the current thread */
1250   if ( !( pHookItem = OLEMenu_IsHookInstalled( GetCurrentThreadId() ) ) )
1251   {
1252     /* This should never fail!! */
1253     WARN("could not retrieve hHook for current thread!\n" );
1254     return FALSE;
1255   }
1256
1257   /* Pass on the message to the next hooker */
1258   return CallNextHookEx( pHookItem->GetMsg_hHook, code, wParam, lParam );
1259 }
1260
1261 /***********************************************************************
1262  * OleCreateMenuDescriptor [OLE32.97]
1263  * Creates an OLE menu descriptor for OLE to use when dispatching
1264  * menu messages and commands.
1265  *
1266  * PARAMS:
1267  *    hmenuCombined  -  Handle to the objects combined menu
1268  *    lpMenuWidths   -  Pointer to array of 6 LONG's indicating menus per group
1269  *
1270  */
1271 HOLEMENU WINAPI OleCreateMenuDescriptor(
1272   HMENU                hmenuCombined,
1273   LPOLEMENUGROUPWIDTHS lpMenuWidths)
1274 {
1275   HOLEMENU hOleMenu;
1276   OleMenuDescriptor *pOleMenuDescriptor;
1277   int i;
1278
1279   if ( !hmenuCombined || !lpMenuWidths )
1280     return 0;
1281
1282   /* Create an OLE menu descriptor */
1283   if ( !(hOleMenu = GlobalAlloc(GMEM_MOVEABLE | GMEM_ZEROINIT,
1284                                 sizeof(OleMenuDescriptor) ) ) )
1285   return 0;
1286
1287   pOleMenuDescriptor = (OleMenuDescriptor *) GlobalLock( hOleMenu );
1288   if ( !pOleMenuDescriptor )
1289     return 0;
1290
1291   /* Initialize menu group widths and hmenu */
1292   for ( i = 0; i < 6; i++ )
1293     pOleMenuDescriptor->mgw.width[i] = lpMenuWidths->width[i];
1294
1295   pOleMenuDescriptor->hmenuCombined = hmenuCombined;
1296   pOleMenuDescriptor->bIsServerItem = FALSE;
1297   GlobalUnlock( hOleMenu );
1298
1299   return hOleMenu;
1300 }
1301
1302 /***********************************************************************
1303  * OleDestroyMenuDescriptor [OLE32.99]
1304  * Destroy the shared menu descriptor
1305  */
1306 HRESULT WINAPI OleDestroyMenuDescriptor(
1307   HOLEMENU hmenuDescriptor)
1308 {
1309   if ( hmenuDescriptor )
1310     GlobalFree( hmenuDescriptor );
1311         return S_OK;
1312 }
1313
1314 /***********************************************************************
1315  * OleSetMenuDescriptor [OLE32.129]
1316  * Installs or removes OLE dispatching code for the containers frame window
1317  * FIXME: The lpFrame and lpActiveObject parameters are currently ignored
1318  * OLE should install context sensitive help F1 filtering for the app when
1319  * these are non null.
1320  *
1321  * PARAMS:
1322  *     hOleMenu         Handle to composite menu descriptor
1323  *     hwndFrame        Handle to containers frame window
1324  *     hwndActiveObject Handle to objects in-place activation window
1325  *     lpFrame          Pointer to IOleInPlaceFrame on containers window
1326  *     lpActiveObject   Pointer to IOleInPlaceActiveObject on active in-place object
1327  *
1328  * RETURNS:
1329  *      S_OK                               - menu installed correctly
1330  *      E_FAIL, E_INVALIDARG, E_UNEXPECTED - failure
1331  */
1332 HRESULT WINAPI OleSetMenuDescriptor(
1333   HOLEMENU               hOleMenu,
1334   HWND                   hwndFrame,
1335   HWND                   hwndActiveObject,
1336   LPOLEINPLACEFRAME        lpFrame,
1337   LPOLEINPLACEACTIVEOBJECT lpActiveObject)
1338 {
1339   OleMenuDescriptor *pOleMenuDescriptor = NULL;
1340
1341   /* Check args */
1342   if ( !hwndFrame || (hOleMenu && !hwndActiveObject) )
1343     return E_INVALIDARG;
1344
1345   if ( lpFrame || lpActiveObject )
1346   {
1347      FIXME("(%x, %x, %x, %p, %p), Context sensitive help filtering not implemented!\n",
1348         (unsigned int)hOleMenu,
1349         hwndFrame,
1350         hwndActiveObject,
1351         lpFrame,
1352         lpActiveObject);
1353   }
1354
1355   /* Set up a message hook to intercept the containers frame window messages.
1356    * The message filter is responsible for dispatching menu messages from the
1357    * shared menu which are intended for the object.
1358    */
1359
1360   if ( hOleMenu )  /* Want to install dispatching code */
1361   {
1362     /* If OLEMenu hooks are already installed for this thread, fail
1363      * Note: This effectively means that OleSetMenuDescriptor cannot
1364      * be called twice in succession on the same frame window
1365      * without first calling it with a null hOleMenu to uninstall */
1366     if ( OLEMenu_IsHookInstalled( GetCurrentThreadId() ) )
1367   return E_FAIL;
1368
1369     /* Get the menu descriptor */
1370     pOleMenuDescriptor = (OleMenuDescriptor *) GlobalLock( hOleMenu );
1371     if ( !pOleMenuDescriptor )
1372       return E_UNEXPECTED;
1373
1374     /* Update the menu descriptor */
1375     pOleMenuDescriptor->hwndFrame = hwndFrame;
1376     pOleMenuDescriptor->hwndActiveObject = hwndActiveObject;
1377
1378     GlobalUnlock( hOleMenu );
1379     pOleMenuDescriptor = NULL;
1380
1381     /* Add a menu descriptor windows property to the frame window */
1382     SetPropA( hwndFrame, "PROP_OLEMenuDescriptor", hOleMenu );
1383
1384     /* Install thread scope message hooks for WH_GETMESSAGE and WH_CALLWNDPROC */
1385     if ( !OLEMenu_InstallHooks( GetCurrentThreadId() ) )
1386       return E_FAIL;
1387   }
1388   else  /* Want to uninstall dispatching code */
1389   {
1390     /* Uninstall the hooks */
1391     if ( !OLEMenu_UnInstallHooks( GetCurrentThreadId() ) )
1392       return E_FAIL;
1393
1394     /* Remove the menu descriptor property from the frame window */
1395     RemovePropA( hwndFrame, "PROP_OLEMenuDescriptor" );
1396   }
1397
1398   return S_OK;
1399 }
1400
1401 /******************************************************************************
1402  *              IsAccelerator        [OLE32.75]
1403  * Mostly copied from controls/menu.c TranslateAccelerator implementation
1404  */
1405 BOOL WINAPI IsAccelerator(HACCEL hAccel, int cAccelEntries, LPMSG lpMsg, WORD* lpwCmd)
1406 {
1407     /* YES, Accel16! */
1408     LPACCEL16 lpAccelTbl;
1409     int i;
1410
1411     if(!lpMsg) return FALSE;
1412     if (!hAccel || !(lpAccelTbl = (LPACCEL16)LockResource16(hAccel)))
1413     {
1414         WARN_(accel)("invalid accel handle=%04x\n", hAccel);
1415         return FALSE;
1416     }
1417     if((lpMsg->message != WM_KEYDOWN &&
1418         lpMsg->message != WM_KEYUP &&
1419         lpMsg->message != WM_SYSKEYDOWN &&
1420         lpMsg->message != WM_SYSKEYUP &&
1421         lpMsg->message != WM_CHAR)) return FALSE;
1422
1423     TRACE_(accel)("hAccel=%04x, cAccelEntries=%d,"
1424                 "msg->hwnd=%04x, msg->message=%04x, wParam=%08x, lParam=%08lx\n",
1425                 hAccel, cAccelEntries,
1426                 lpMsg->hwnd, lpMsg->message, lpMsg->wParam, lpMsg->lParam);
1427     for(i = 0; i < cAccelEntries; i++)
1428     {
1429         if(lpAccelTbl[i].key != lpMsg->wParam)
1430             continue;
1431
1432         if(lpMsg->message == WM_CHAR)
1433         {
1434             if(!(lpAccelTbl[i].fVirt & FALT) && !(lpAccelTbl[i].fVirt & FVIRTKEY))
1435             {
1436                 TRACE_(accel)("found accel for WM_CHAR: ('%c')\n", lpMsg->wParam & 0xff);
1437                 goto found;
1438             }
1439         }
1440         else
1441         {
1442             if(lpAccelTbl[i].fVirt & FVIRTKEY)
1443             {
1444                 INT mask = 0;
1445                 TRACE_(accel)("found accel for virt_key %04x (scan %04x)\n",
1446                                 lpMsg->wParam, HIWORD(lpMsg->lParam) & 0xff);
1447                 if(GetKeyState(VK_SHIFT) & 0x8000) mask |= FSHIFT;
1448                 if(GetKeyState(VK_CONTROL) & 0x8000) mask |= FCONTROL;
1449                 if(GetKeyState(VK_MENU) & 0x8000) mask |= FALT;
1450                 if(mask == (lpAccelTbl[i].fVirt & (FSHIFT | FCONTROL | FALT))) goto found;
1451                 TRACE_(accel)("incorrect SHIFT/CTRL/ALT-state\n");
1452             }
1453             else
1454             {
1455                 if(!(lpMsg->lParam & 0x01000000))  /* no special_key */
1456                 {
1457                     if((lpAccelTbl[i].fVirt & FALT) && (lpMsg->lParam & 0x20000000))
1458                     {                                                  /* ^^ ALT pressed */
1459                         TRACE_(accel)("found accel for Alt-%c\n", lpMsg->wParam & 0xff);
1460                         goto found;
1461                     }
1462                 }
1463             }
1464         }
1465     }
1466
1467     WARN_(accel)("couldn't translate accelerator key\n");
1468     return FALSE;
1469
1470 found:
1471     if(lpwCmd) *lpwCmd = lpAccelTbl[i].cmd;
1472     return TRUE;
1473 }
1474
1475 /***********************************************************************
1476  * ReleaseStgMedium [OLE32.140]
1477  */
1478 void WINAPI ReleaseStgMedium(
1479   STGMEDIUM* pmedium)
1480 {
1481   switch (pmedium->tymed)
1482   {
1483     case TYMED_HGLOBAL:
1484     {
1485       if ( (pmedium->pUnkForRelease==0) &&
1486            (pmedium->u.hGlobal!=0) )
1487         GlobalFree(pmedium->u.hGlobal);
1488
1489       pmedium->u.hGlobal = 0;
1490       break;
1491     }
1492     case TYMED_FILE:
1493     {
1494       if (pmedium->u.lpszFileName!=0)
1495       {
1496         if (pmedium->pUnkForRelease==0)
1497         {
1498           DeleteFileW(pmedium->u.lpszFileName);
1499         }
1500
1501         CoTaskMemFree(pmedium->u.lpszFileName);
1502       }
1503
1504       pmedium->u.lpszFileName = 0;
1505       break;
1506     }
1507     case TYMED_ISTREAM:
1508     {
1509       if (pmedium->u.pstm!=0)
1510       {
1511         IStream_Release(pmedium->u.pstm);
1512       }
1513
1514       pmedium->u.pstm = 0;
1515       break;
1516     }
1517     case TYMED_ISTORAGE:
1518     {
1519       if (pmedium->u.pstg!=0)
1520       {
1521         IStorage_Release(pmedium->u.pstg);
1522       }
1523
1524       pmedium->u.pstg = 0;
1525       break;
1526     }
1527     case TYMED_GDI:
1528     {
1529       if ( (pmedium->pUnkForRelease==0) &&
1530            (pmedium->u.hGlobal!=0) )
1531         DeleteObject(pmedium->u.hGlobal);
1532
1533       pmedium->u.hGlobal = 0;
1534       break;
1535     }
1536     case TYMED_MFPICT:
1537     {
1538       if ( (pmedium->pUnkForRelease==0) &&
1539            (pmedium->u.hMetaFilePict!=0) )
1540       {
1541         LPMETAFILEPICT pMP = GlobalLock(pmedium->u.hMetaFilePict);
1542         DeleteMetaFile(pMP->hMF);
1543         GlobalUnlock(pmedium->u.hMetaFilePict);
1544         GlobalFree(pmedium->u.hMetaFilePict);
1545       }
1546
1547       pmedium->u.hMetaFilePict = 0;
1548       break;
1549     }
1550     case TYMED_ENHMF:
1551     {
1552       if ( (pmedium->pUnkForRelease==0) &&
1553            (pmedium->u.hEnhMetaFile!=0) )
1554       {
1555         DeleteEnhMetaFile(pmedium->u.hEnhMetaFile);
1556       }
1557
1558       pmedium->u.hEnhMetaFile = 0;
1559       break;
1560     }
1561     case TYMED_NULL:
1562     default:
1563       break;
1564   }
1565
1566   /*
1567    * After cleaning up, the unknown is released
1568    */
1569   if (pmedium->pUnkForRelease!=0)
1570   {
1571     IUnknown_Release(pmedium->pUnkForRelease);
1572     pmedium->pUnkForRelease = 0;
1573   }
1574 }
1575
1576 /***
1577  * OLEDD_Initialize()
1578  *
1579  * Initializes the OLE drag and drop data structures.
1580  */
1581 static void OLEDD_Initialize()
1582 {
1583     WNDCLASSA wndClass;
1584
1585     ZeroMemory (&wndClass, sizeof(WNDCLASSA));
1586     wndClass.style         = CS_GLOBALCLASS;
1587     wndClass.lpfnWndProc   = (WNDPROC)OLEDD_DragTrackerWindowProc;
1588     wndClass.cbClsExtra    = 0;
1589     wndClass.cbWndExtra    = sizeof(TrackerWindowInfo*);
1590     wndClass.hCursor       = 0;
1591     wndClass.hbrBackground = 0;
1592     wndClass.lpszClassName = OLEDD_DRAGTRACKERCLASS;
1593
1594     RegisterClassA (&wndClass);
1595 }
1596
1597 /***
1598  * OLEDD_UnInitialize()
1599  *
1600  * Releases the OLE drag and drop data structures.
1601  */
1602 static void OLEDD_UnInitialize()
1603 {
1604   /*
1605    * Simply empty the list.
1606    */
1607   while (targetListHead!=NULL)
1608   {
1609     RevokeDragDrop(targetListHead->hwndTarget);
1610   }
1611 }
1612
1613 /***
1614  * OLEDD_InsertDropTarget()
1615  *
1616  * Insert the target node in the tree.
1617  */
1618 static void OLEDD_InsertDropTarget(DropTargetNode* nodeToAdd)
1619 {
1620   DropTargetNode*  curNode;
1621   DropTargetNode** parentNodeLink;
1622
1623   /*
1624    * Iterate the tree to find the insertion point.
1625    */
1626   curNode        = targetListHead;
1627   parentNodeLink = &targetListHead;
1628
1629   while (curNode!=NULL)
1630   {
1631     if (nodeToAdd->hwndTarget<curNode->hwndTarget)
1632     {
1633       /*
1634        * If the node we want to add has a smaller HWND, go left
1635        */
1636       parentNodeLink = &curNode->prevDropTarget;
1637       curNode        =  curNode->prevDropTarget;
1638     }
1639     else if (nodeToAdd->hwndTarget>curNode->hwndTarget)
1640     {
1641       /*
1642        * If the node we want to add has a larger HWND, go right
1643        */
1644       parentNodeLink = &curNode->nextDropTarget;
1645       curNode        =  curNode->nextDropTarget;
1646     }
1647     else
1648     {
1649       /*
1650        * The item was found in the list. It shouldn't have been there
1651        */
1652       assert(FALSE);
1653       return;
1654     }
1655   }
1656
1657   /*
1658    * If we get here, we have found a spot for our item. The parentNodeLink
1659    * pointer points to the pointer that we have to modify.
1660    * The curNode should be NULL. We just have to establish the link and Voila!
1661    */
1662   assert(curNode==NULL);
1663   assert(parentNodeLink!=NULL);
1664   assert(*parentNodeLink==NULL);
1665
1666   *parentNodeLink=nodeToAdd;
1667 }
1668
1669 /***
1670  * OLEDD_ExtractDropTarget()
1671  *
1672  * Removes the target node from the tree.
1673  */
1674 static DropTargetNode* OLEDD_ExtractDropTarget(HWND hwndOfTarget)
1675 {
1676   DropTargetNode*  curNode;
1677   DropTargetNode** parentNodeLink;
1678
1679   /*
1680    * Iterate the tree to find the insertion point.
1681    */
1682   curNode        = targetListHead;
1683   parentNodeLink = &targetListHead;
1684
1685   while (curNode!=NULL)
1686   {
1687     if (hwndOfTarget<curNode->hwndTarget)
1688     {
1689       /*
1690        * If the node we want to add has a smaller HWND, go left
1691        */
1692       parentNodeLink = &curNode->prevDropTarget;
1693       curNode        =  curNode->prevDropTarget;
1694     }
1695     else if (hwndOfTarget>curNode->hwndTarget)
1696     {
1697       /*
1698        * If the node we want to add has a larger HWND, go right
1699        */
1700       parentNodeLink = &curNode->nextDropTarget;
1701       curNode        =  curNode->nextDropTarget;
1702     }
1703     else
1704     {
1705       /*
1706        * The item was found in the list. Detach it from it's parent and
1707        * re-insert it's kids in the tree.
1708        */
1709       assert(parentNodeLink!=NULL);
1710       assert(*parentNodeLink==curNode);
1711
1712       /*
1713        * We arbitrately re-attach the left sub-tree to the parent.
1714        */
1715       *parentNodeLink = curNode->prevDropTarget;
1716
1717       /*
1718        * And we re-insert the right subtree
1719        */
1720       if (curNode->nextDropTarget!=NULL)
1721       {
1722         OLEDD_InsertDropTarget(curNode->nextDropTarget);
1723       }
1724
1725       /*
1726        * The node we found is still a valid node once we complete
1727        * the unlinking of the kids.
1728        */
1729       curNode->nextDropTarget=NULL;
1730       curNode->prevDropTarget=NULL;
1731
1732       return curNode;
1733     }
1734   }
1735
1736   /*
1737    * If we get here, the node is not in the tree
1738    */
1739   return NULL;
1740 }
1741
1742 /***
1743  * OLEDD_FindDropTarget()
1744  *
1745  * Finds information about the drop target.
1746  */
1747 static DropTargetNode* OLEDD_FindDropTarget(HWND hwndOfTarget)
1748 {
1749   DropTargetNode*  curNode;
1750
1751   /*
1752    * Iterate the tree to find the HWND value.
1753    */
1754   curNode        = targetListHead;
1755
1756   while (curNode!=NULL)
1757   {
1758     if (hwndOfTarget<curNode->hwndTarget)
1759     {
1760       /*
1761        * If the node we want to add has a smaller HWND, go left
1762        */
1763       curNode =  curNode->prevDropTarget;
1764     }
1765     else if (hwndOfTarget>curNode->hwndTarget)
1766     {
1767       /*
1768        * If the node we want to add has a larger HWND, go right
1769        */
1770       curNode =  curNode->nextDropTarget;
1771     }
1772     else
1773     {
1774       /*
1775        * The item was found in the list.
1776        */
1777       return curNode;
1778     }
1779   }
1780
1781   /*
1782    * If we get here, the item is not in the list
1783    */
1784   return NULL;
1785 }
1786
1787 /***
1788  * OLEDD_DragTrackerWindowProc()
1789  *
1790  * This method is the WindowProcedure of the drag n drop tracking
1791  * window. During a drag n Drop operation, an invisible window is created
1792  * to receive the user input and act upon it. This procedure is in charge
1793  * of this behavior.
1794  */
1795 static LRESULT WINAPI OLEDD_DragTrackerWindowProc(
1796                          HWND   hwnd,
1797                          UINT   uMsg,
1798                          WPARAM wParam,
1799                          LPARAM   lParam)
1800 {
1801   switch (uMsg)
1802   {
1803     case WM_CREATE:
1804     {
1805       LPCREATESTRUCTA createStruct = (LPCREATESTRUCTA)lParam;
1806
1807       SetWindowLongA(hwnd, 0, (LONG)createStruct->lpCreateParams);
1808
1809
1810       break;
1811     }
1812     case WM_MOUSEMOVE:
1813     {
1814       TrackerWindowInfo* trackerInfo = (TrackerWindowInfo*)GetWindowLongA(hwnd, 0);
1815       POINT            mousePos;
1816
1817       /*
1818        * Get the current mouse position in screen coordinates.
1819        */
1820       mousePos.x = LOWORD(lParam);
1821       mousePos.y = HIWORD(lParam);
1822       ClientToScreen(hwnd, &mousePos);
1823
1824       /*
1825        * Track the movement of the mouse.
1826        */
1827       OLEDD_TrackMouseMove(trackerInfo, mousePos, wParam);
1828
1829       break;
1830     }
1831     case WM_LBUTTONUP:
1832     case WM_MBUTTONUP:
1833     case WM_RBUTTONUP:
1834     case WM_LBUTTONDOWN:
1835     case WM_MBUTTONDOWN:
1836     case WM_RBUTTONDOWN:
1837     {
1838       TrackerWindowInfo* trackerInfo = (TrackerWindowInfo*)GetWindowLongA(hwnd, 0);
1839       POINT            mousePos;
1840
1841       /*
1842        * Get the current mouse position in screen coordinates.
1843        */
1844       mousePos.x = LOWORD(lParam);
1845       mousePos.y = HIWORD(lParam);
1846       ClientToScreen(hwnd, &mousePos);
1847
1848       /*
1849        * Notify everyone that the button state changed
1850        * TODO: Check if the "escape" key was pressed.
1851        */
1852       OLEDD_TrackStateChange(trackerInfo, mousePos, wParam);
1853
1854       break;
1855     }
1856   }
1857
1858   /*
1859    * This is a window proc after all. Let's call the default.
1860    */
1861   return DefWindowProcA (hwnd, uMsg, wParam, lParam);
1862 }
1863
1864 /***
1865  * OLEDD_TrackMouseMove()
1866  *
1867  * This method is invoked while a drag and drop operation is in effect.
1868  * it will generate the appropriate callbacks in the drop source
1869  * and drop target. It will also provide the expected feedback to
1870  * the user.
1871  *
1872  * params:
1873  *    trackerInfo - Pointer to the structure identifying the
1874  *                  drag & drop operation that is currently
1875  *                  active.
1876  *    mousePos    - Current position of the mouse in screen
1877  *                  coordinates.
1878  *    keyState    - Contains the state of the shift keys and the
1879  *                  mouse buttons (MK_LBUTTON and the like)
1880  */
1881 static void OLEDD_TrackMouseMove(
1882   TrackerWindowInfo* trackerInfo,
1883   POINT            mousePos,
1884   DWORD              keyState)
1885 {
1886   HWND   hwndNewTarget = 0;
1887   HRESULT  hr = S_OK;
1888
1889   /*
1890    * Get the handle of the window under the mouse
1891    */
1892   hwndNewTarget = WindowFromPoint(mousePos);
1893
1894   /*
1895    * Every time, we re-initialize the effects passed to the
1896    * IDropTarget to the effects allowed by the source.
1897    */
1898   *trackerInfo->pdwEffect = trackerInfo->dwOKEffect;
1899
1900   /*
1901    * If we are hovering over the same target as before, send the
1902    * DragOver notification
1903    */
1904   if ( (trackerInfo->curDragTarget != 0) &&
1905        (trackerInfo->curDragTargetHWND==hwndNewTarget) )
1906   {
1907     POINTL  mousePosParam;
1908
1909     /*
1910      * The documentation tells me that the coordinate should be in the target
1911      * window's coordinate space. However, the tests I made tell me the
1912      * coordinates should be in screen coordinates.
1913      */
1914     mousePosParam.x = mousePos.x;
1915     mousePosParam.y = mousePos.y;
1916
1917     IDropTarget_DragOver(trackerInfo->curDragTarget,
1918                          keyState,
1919                          mousePosParam,
1920                          trackerInfo->pdwEffect);
1921   }
1922   else
1923   {
1924     DropTargetNode* newDropTargetNode = 0;
1925
1926     /*
1927      * If we changed window, we have to notify our old target and check for
1928      * the new one.
1929      */
1930     if (trackerInfo->curDragTarget!=0)
1931     {
1932       IDropTarget_DragLeave(trackerInfo->curDragTarget);
1933     }
1934
1935     /*
1936      * Make sure we're hovering over a window.
1937      */
1938     if (hwndNewTarget!=0)
1939     {
1940       /*
1941        * Find-out if there is a drag target under the mouse
1942        */
1943       HWND nexttar = hwndNewTarget;
1944       do {
1945         newDropTargetNode = OLEDD_FindDropTarget(nexttar);
1946       } while (!newDropTargetNode && (nexttar = GetParent(nexttar)) != 0);
1947       if(nexttar) hwndNewTarget = nexttar;
1948
1949       trackerInfo->curDragTargetHWND = hwndNewTarget;
1950       trackerInfo->curDragTarget     = newDropTargetNode ? newDropTargetNode->dropTarget : 0;
1951
1952       /*
1953        * If there is, notify it that we just dragged-in
1954        */
1955       if (trackerInfo->curDragTarget!=0)
1956       {
1957         POINTL  mousePosParam;
1958
1959         /*
1960          * The documentation tells me that the coordinate should be in the target
1961          * window's coordinate space. However, the tests I made tell me the
1962          * coordinates should be in screen coordinates.
1963          */
1964         mousePosParam.x = mousePos.x;
1965         mousePosParam.y = mousePos.y;
1966
1967         IDropTarget_DragEnter(trackerInfo->curDragTarget,
1968                               trackerInfo->dataObject,
1969                               keyState,
1970                               mousePosParam,
1971                               trackerInfo->pdwEffect);
1972       }
1973     }
1974     else
1975     {
1976       /*
1977        * The mouse is not over a window so we don't track anything.
1978        */
1979       trackerInfo->curDragTargetHWND = 0;
1980       trackerInfo->curDragTarget     = 0;
1981     }
1982   }
1983
1984   /*
1985    * Now that we have done that, we have to tell the source to give
1986    * us feedback on the work being done by the target.  If we don't
1987    * have a target, simulate no effect.
1988    */
1989   if (trackerInfo->curDragTarget==0)
1990   {
1991     *trackerInfo->pdwEffect = DROPEFFECT_NONE;
1992   }
1993
1994   hr = IDropSource_GiveFeedback(trackerInfo->dropSource,
1995                                 *trackerInfo->pdwEffect);
1996
1997   /*
1998    * When we ask for feedback from the drop source, sometimes it will
1999    * do all the necessary work and sometimes it will not handle it
2000    * when that's the case, we must display the standard drag and drop
2001    * cursors.
2002    */
2003   if (hr==DRAGDROP_S_USEDEFAULTCURSORS)
2004   {
2005     if (*trackerInfo->pdwEffect & DROPEFFECT_MOVE)
2006     {
2007       SetCursor(LoadCursorA(OLE32_hInstance, MAKEINTRESOURCEA(1)));
2008     }
2009     else if (*trackerInfo->pdwEffect & DROPEFFECT_COPY)
2010     {
2011       SetCursor(LoadCursorA(OLE32_hInstance, MAKEINTRESOURCEA(2)));
2012     }
2013     else if (*trackerInfo->pdwEffect & DROPEFFECT_LINK)
2014     {
2015       SetCursor(LoadCursorA(OLE32_hInstance, MAKEINTRESOURCEA(3)));
2016     }
2017     else
2018     {
2019       SetCursor(LoadCursorA(OLE32_hInstance, MAKEINTRESOURCEA(0)));
2020     }
2021   }
2022 }
2023
2024 /***
2025  * OLEDD_TrackStateChange()
2026  *
2027  * This method is invoked while a drag and drop operation is in effect.
2028  * It is used to notify the drop target/drop source callbacks when
2029  * the state of the keyboard or mouse button change.
2030  *
2031  * params:
2032  *    trackerInfo - Pointer to the structure identifying the
2033  *                  drag & drop operation that is currently
2034  *                  active.
2035  *    mousePos    - Current position of the mouse in screen
2036  *                  coordinates.
2037  *    keyState    - Contains the state of the shift keys and the
2038  *                  mouse buttons (MK_LBUTTON and the like)
2039  */
2040 static void OLEDD_TrackStateChange(
2041   TrackerWindowInfo* trackerInfo,
2042   POINT            mousePos,
2043   DWORD              keyState)
2044 {
2045   /*
2046    * Ask the drop source what to do with the operation.
2047    */
2048   trackerInfo->returnValue = IDropSource_QueryContinueDrag(
2049                                trackerInfo->dropSource,
2050                                trackerInfo->escPressed,
2051                                keyState);
2052
2053   /*
2054    * All the return valued will stop the operation except the S_OK
2055    * return value.
2056    */
2057   if (trackerInfo->returnValue!=S_OK)
2058   {
2059     /*
2060      * Make sure the message loop in DoDragDrop stops
2061      */
2062     trackerInfo->trackingDone = TRUE;
2063
2064     /*
2065      * Release the mouse in case the drop target decides to show a popup
2066      * or a menu or something.
2067      */
2068     ReleaseCapture();
2069
2070     /*
2071      * If we end-up over a target, drop the object in the target or
2072      * inform the target that the operation was cancelled.
2073      */
2074     if (trackerInfo->curDragTarget!=0)
2075     {
2076       switch (trackerInfo->returnValue)
2077       {
2078         /*
2079          * If the source wants us to complete the operation, we tell
2080          * the drop target that we just dropped the object in it.
2081          */
2082         case DRAGDROP_S_DROP:
2083         {
2084           POINTL  mousePosParam;
2085
2086           /*
2087            * The documentation tells me that the coordinate should be
2088            * in the target window's coordinate space. However, the tests
2089            * I made tell me the coordinates should be in screen coordinates.
2090            */
2091           mousePosParam.x = mousePos.x;
2092           mousePosParam.y = mousePos.y;
2093
2094           IDropTarget_Drop(trackerInfo->curDragTarget,
2095                            trackerInfo->dataObject,
2096                            keyState,
2097                            mousePosParam,
2098                            trackerInfo->pdwEffect);
2099           break;
2100         }
2101         /*
2102          * If the source told us that we should cancel, fool the drop
2103          * target by telling it that the mouse left it's window.
2104          * Also set the drop effect to "NONE" in case the application
2105          * ignores the result of DoDragDrop.
2106          */
2107         case DRAGDROP_S_CANCEL:
2108           IDropTarget_DragLeave(trackerInfo->curDragTarget);
2109           *trackerInfo->pdwEffect = DROPEFFECT_NONE;
2110           break;
2111       }
2112     }
2113   }
2114 }
2115
2116 /***
2117  * OLEDD_GetButtonState()
2118  *
2119  * This method will use the current state of the keyboard to build
2120  * a button state mask equivalent to the one passed in the
2121  * WM_MOUSEMOVE wParam.
2122  */
2123 static DWORD OLEDD_GetButtonState()
2124 {
2125   BYTE  keyboardState[256];
2126   DWORD keyMask = 0;
2127
2128   GetKeyboardState(keyboardState);
2129
2130   if ( (keyboardState[VK_SHIFT] & 0x80) !=0)
2131     keyMask |= MK_SHIFT;
2132
2133   if ( (keyboardState[VK_CONTROL] & 0x80) !=0)
2134     keyMask |= MK_CONTROL;
2135
2136   if ( (keyboardState[VK_LBUTTON] & 0x80) !=0)
2137     keyMask |= MK_LBUTTON;
2138
2139   if ( (keyboardState[VK_RBUTTON] & 0x80) !=0)
2140     keyMask |= MK_RBUTTON;
2141
2142   if ( (keyboardState[VK_MBUTTON] & 0x80) !=0)
2143     keyMask |= MK_MBUTTON;
2144
2145   return keyMask;
2146 }
2147
2148 /***
2149  * OLEDD_GetButtonState()
2150  *
2151  * This method will read the default value of the registry key in
2152  * parameter and extract a DWORD value from it. The registry key value
2153  * can be in a string key or a DWORD key.
2154  *
2155  * params:
2156  *     regKey   - Key to read the default value from
2157  *     pdwValue - Pointer to the location where the DWORD
2158  *                value is returned. This value is not modified
2159  *                if the value is not found.
2160  */
2161
2162 static void OLEUTL_ReadRegistryDWORDValue(
2163   HKEY   regKey,
2164   DWORD* pdwValue)
2165 {
2166   char  buffer[20];
2167   DWORD dwKeyType;
2168   DWORD cbData = 20;
2169   LONG  lres;
2170
2171   lres = RegQueryValueExA(regKey,
2172                           "",
2173                           NULL,
2174                           &dwKeyType,
2175                           (LPBYTE)buffer,
2176                           &cbData);
2177
2178   if (lres==ERROR_SUCCESS)
2179   {
2180     switch (dwKeyType)
2181     {
2182       case REG_DWORD:
2183         *pdwValue = *(DWORD*)buffer;
2184         break;
2185       case REG_EXPAND_SZ:
2186       case REG_MULTI_SZ:
2187       case REG_SZ:
2188         *pdwValue = (DWORD)strtoul(buffer, NULL, 10);
2189         break;
2190     }
2191   }
2192 }
2193
2194 /******************************************************************************
2195  * OleMetaFilePictFromIconAndLabel
2196  *
2197  * Returns a global memory handle to a metafile which contains the icon and
2198  * label given.
2199  * I guess the result of that should look somehow like desktop icons.
2200  * If no hIcon is given, we load the icon via lpszSourceFile and iIconIndex.
2201  * This code might be wrong at some places.
2202  */
2203 HGLOBAL16 WINAPI OleMetaFilePictFromIconAndLabel16(
2204         HICON16 hIcon,
2205         LPCOLESTR16 lpszLabel,
2206         LPCOLESTR16 lpszSourceFile,
2207         UINT16 iIconIndex
2208 ) {
2209     METAFILEPICT16 *mf;
2210     HGLOBAL16 hmf;
2211     HDC16 hdc;
2212
2213     FIXME("(%04x, '%s', '%s', %d): incorrect metrics, please try to correct them !\n\n\n", hIcon, lpszLabel, lpszSourceFile, iIconIndex);
2214
2215     if (!hIcon) {
2216         if (lpszSourceFile) {
2217             HINSTANCE16 hInstance = LoadLibrary16(lpszSourceFile);
2218
2219             /* load the icon at index from lpszSourceFile */
2220             hIcon = (HICON16)LoadIconA(hInstance, (LPCSTR)(DWORD)iIconIndex);
2221             FreeLibrary16(hInstance);
2222         } else
2223             return (HGLOBAL)NULL;
2224     }
2225
2226     hdc = CreateMetaFile16(NULL);
2227     DrawIcon(hdc, 0, 0, hIcon); /* FIXME */
2228     TextOutA(hdc, 0, 0, lpszLabel, 1); /* FIXME */
2229     hmf = GlobalAlloc16(0, sizeof(METAFILEPICT16));
2230     mf = (METAFILEPICT16 *)GlobalLock16(hmf);
2231     mf->mm = MM_ANISOTROPIC;
2232     mf->xExt = 20; /* FIXME: bogus */
2233     mf->yExt = 20; /* dito */
2234     mf->hMF = CloseMetaFile16(hdc);
2235     return hmf;
2236 }
2237
2238 /******************************************************************************
2239  * DllDebugObjectRPCHook
2240  * turns on and off internal debugging,  pointer is only used on macintosh
2241  */
2242
2243 BOOL WINAPI DllDebugObjectRPCHook(BOOL b, void *dummy)
2244 {
2245   FIXME("stub\n");
2246   return TRUE;
2247 }
2248