4 * Copyright 1995 Martin von Loewis
5 * Copyright 1999 Francis Beaudet
6 * Copyright 1999 Noel Borthwick
21 #include "wine/obj_clientserver.h"
22 #include "wine/winbase16.h"
23 #include "wine/wingdi16.h"
24 #include "wine/winestring.h"
25 #include "debugtools.h"
29 DEFAULT_DEBUG_CHANNEL(ole);
31 /******************************************************************************
32 * These are static/global variables and internal data structures that the
33 * OLE module uses to maintain it's state.
35 typedef struct tagDropTargetNode
38 IDropTarget* dropTarget;
39 struct tagDropTargetNode* prevDropTarget;
40 struct tagDropTargetNode* nextDropTarget;
43 typedef struct tagTrackerWindowInfo
45 IDataObject* dataObject;
46 IDropSource* dropSource;
53 HWND curDragTargetHWND;
54 IDropTarget* curDragTarget;
57 typedef struct tagOleMenuDescriptor /* OleMenuDescriptor */
59 HWND hwndFrame; /* The containers frame window */
60 HWND hwndActiveObject; /* The active objects window */
61 OLEMENUGROUPWIDTHS mgw; /* OLE menu group widths for the shared menu */
62 HMENU hmenuCombined; /* The combined menu */
63 BOOL bIsServerItem; /* True if the currently open popup belongs to the server */
66 typedef struct tagOleMenuHookItem /* OleMenu hook item in per thread hook list */
68 DWORD tid; /* Thread Id */
69 HANDLE hHeap; /* Heap this is allocated from */
70 HHOOK GetMsg_hHook; /* message hook for WH_GETMESSAGE */
71 HHOOK CallWndProc_hHook; /* message hook for WH_CALLWNDPROC */
72 struct tagOleMenuHookItem *next;
75 static OleMenuHookItem *hook_list;
78 * This is the lock count on the OLE library. It is controlled by the
79 * OLEInitialize/OLEUninitialize methods.
81 static ULONG OLE_moduleLockCount = 0;
84 * Name of our registered window class.
86 static const char OLEDD_DRAGTRACKERCLASS[] = "WineDragDropTracker32";
89 * This is the head of the Drop target container.
91 static DropTargetNode* targetListHead = NULL;
93 /******************************************************************************
94 * These are the prototypes of miscelaneous utility methods
96 static void OLEUTL_ReadRegistryDWORDValue(HKEY regKey, DWORD* pdwValue);
98 /******************************************************************************
99 * These are the prototypes of the utility methods used to manage a shared menu
101 static void OLEMenu_Initialize();
102 static void OLEMenu_UnInitialize();
103 BOOL OLEMenu_InstallHooks( DWORD tid );
104 BOOL OLEMenu_UnInstallHooks( DWORD tid );
105 OleMenuHookItem * OLEMenu_IsHookInstalled( DWORD tid );
106 static BOOL OLEMenu_FindMainMenuIndex( HMENU hMainMenu, HMENU hPopupMenu, UINT *pnPos );
107 BOOL OLEMenu_SetIsServerMenu( HMENU hmenu, OleMenuDescriptor *pOleMenuDescriptor );
108 LRESULT CALLBACK OLEMenu_CallWndProc(INT code, WPARAM wParam, LPARAM lParam);
109 LRESULT CALLBACK OLEMenu_GetMsgProc(INT code, WPARAM wParam, LPARAM lParam);
111 /******************************************************************************
112 * These are the prototypes of the OLE Clipboard initialization methods (in clipboard.c)
114 void OLEClipbrd_UnInitialize();
115 void OLEClipbrd_Initialize();
117 /******************************************************************************
118 * These are the prototypes of the utility methods used for OLE Drag n Drop
120 static void OLEDD_Initialize();
121 static void OLEDD_UnInitialize();
122 static void OLEDD_InsertDropTarget(
123 DropTargetNode* nodeToAdd);
124 static DropTargetNode* OLEDD_ExtractDropTarget(
126 static DropTargetNode* OLEDD_FindDropTarget(
128 static LRESULT WINAPI OLEDD_DragTrackerWindowProc(
133 static void OLEDD_TrackMouseMove(
134 TrackerWindowInfo* trackerInfo,
137 static void OLEDD_TrackStateChange(
138 TrackerWindowInfo* trackerInfo,
141 static DWORD OLEDD_GetButtonState();
144 /******************************************************************************
145 * OleBuildVersion [OLE2.1]
147 DWORD WINAPI OleBuildVersion(void)
149 TRACE("Returning version %d, build %d.\n", rmm, rup);
150 return (rmm<<16)+rup;
153 /***********************************************************************
154 * OleInitialize (OLE2.2) (OLE32.108)
156 HRESULT WINAPI OleInitialize(LPVOID reserved)
160 TRACE("(%p)\n", reserved);
163 * The first duty of the OleInitialize is to initialize the COM libraries.
165 hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
168 * If the CoInitializeEx call failed, the OLE libraries can't be
175 * Then, it has to initialize the OLE specific modules.
179 * Object linking and Embedding
180 * In-place activation
182 if (OLE_moduleLockCount==0)
185 * Initialize the libraries.
187 TRACE("() - Initializing the OLE libraries\n");
192 OLEClipbrd_Initialize();
202 OLEMenu_Initialize();
206 * Then, we increase the lock count on the OLE module.
208 OLE_moduleLockCount++;
213 /******************************************************************************
214 * CoGetCurrentProcess [COMPOBJ.34] [OLE2.2][OLE32.108]
217 * Is DWORD really the correct return type for this function?
219 DWORD WINAPI CoGetCurrentProcess(void)
221 return GetCurrentProcessId();
224 /******************************************************************************
225 * OleUninitialize [OLE2.3] [OLE32.131]
227 void WINAPI OleUninitialize(void)
232 * Decrease the lock count on the OLE module.
234 OLE_moduleLockCount--;
237 * If we hit the bottom of the lock stack, free the libraries.
239 if (OLE_moduleLockCount==0)
242 * Actually free the libraries.
244 TRACE("() - Freeing the last reference count\n");
249 OLEClipbrd_UnInitialize();
254 OLEDD_UnInitialize();
259 OLEMenu_UnInitialize();
263 * Then, uninitialize the COM libraries.
268 /******************************************************************************
269 * CoRegisterMessageFilter [OLE32.38]
271 HRESULT WINAPI CoRegisterMessageFilter(
272 LPMESSAGEFILTER lpMessageFilter, /* Pointer to interface */
273 LPMESSAGEFILTER *lplpMessageFilter /* Indirect pointer to prior instance if non-NULL */
276 if (lplpMessageFilter) {
277 *lplpMessageFilter = NULL;
282 /******************************************************************************
283 * OleInitializeWOW [OLE32.109]
285 HRESULT WINAPI OleInitializeWOW(DWORD x) {
286 FIXME("(0x%08lx),stub!\n",x);
290 /***********************************************************************
291 * RegisterDragDrop16 (OLE2.35)
293 HRESULT WINAPI RegisterDragDrop16(
295 LPDROPTARGET pDropTarget
297 FIXME("(0x%04x,%p),stub!\n",hwnd,pDropTarget);
301 /***********************************************************************
302 * RegisterDragDrop (OLE32.139)
304 HRESULT WINAPI RegisterDragDrop(
306 LPDROPTARGET pDropTarget)
308 DropTargetNode* dropTargetInfo;
310 TRACE("(0x%x,%p)\n", hwnd, pDropTarget);
313 * First, check if the window is already registered.
315 dropTargetInfo = OLEDD_FindDropTarget(hwnd);
317 if (dropTargetInfo!=NULL)
318 return DRAGDROP_E_ALREADYREGISTERED;
321 * If it's not there, we can add it. We first create a node for it.
323 dropTargetInfo = HeapAlloc(GetProcessHeap(), 0, sizeof(DropTargetNode));
325 if (dropTargetInfo==NULL)
326 return E_OUTOFMEMORY;
328 dropTargetInfo->hwndTarget = hwnd;
329 dropTargetInfo->prevDropTarget = NULL;
330 dropTargetInfo->nextDropTarget = NULL;
333 * Don't forget that this is an interface pointer, need to nail it down since
334 * we keep a copy of it.
336 dropTargetInfo->dropTarget = pDropTarget;
337 IDropTarget_AddRef(dropTargetInfo->dropTarget);
339 OLEDD_InsertDropTarget(dropTargetInfo);
344 /***********************************************************************
345 * RevokeDragDrop16 (OLE2.36)
347 HRESULT WINAPI RevokeDragDrop16(
350 FIXME("(0x%04x),stub!\n",hwnd);
354 /***********************************************************************
355 * RevokeDragDrop (OLE32.141)
357 HRESULT WINAPI RevokeDragDrop(
360 DropTargetNode* dropTargetInfo;
362 TRACE("(0x%x)\n", hwnd);
365 * First, check if the window is already registered.
367 dropTargetInfo = OLEDD_ExtractDropTarget(hwnd);
370 * If it ain't in there, it's an error.
372 if (dropTargetInfo==NULL)
373 return DRAGDROP_E_NOTREGISTERED;
376 * If it's in there, clean-up it's used memory and
379 IDropTarget_Release(dropTargetInfo->dropTarget);
380 HeapFree(GetProcessHeap(), 0, dropTargetInfo);
385 /***********************************************************************
386 * OleRegGetUserType (OLE32.122)
388 * This implementation of OleRegGetUserType ignores the dwFormOfType
389 * parameter and always returns the full name of the object. This is
390 * not too bad since this is the case for many objects because of the
391 * way they are registered.
393 HRESULT WINAPI OleRegGetUserType(
396 LPOLESTR* pszUserType)
406 * Initialize the out parameter.
411 * Build the key name we're looking for
413 sprintf( keyName, "CLSID\\{%08lx-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}\\",
414 clsid->Data1, clsid->Data2, clsid->Data3,
415 clsid->Data4[0], clsid->Data4[1], clsid->Data4[2], clsid->Data4[3],
416 clsid->Data4[4], clsid->Data4[5], clsid->Data4[6], clsid->Data4[7] );
418 TRACE("(%s, %ld, %p)\n", keyName, dwFormOfType, pszUserType);
421 * Open the class id Key
423 hres = RegOpenKeyA(HKEY_CLASSES_ROOT,
427 if (hres != ERROR_SUCCESS)
428 return REGDB_E_CLASSNOTREG;
431 * Retrieve the size of the name string.
435 hres = RegQueryValueExA(clsidKey,
442 if (hres!=ERROR_SUCCESS)
444 RegCloseKey(clsidKey);
445 return REGDB_E_READREGDB;
449 * Allocate a buffer for the registry value.
451 *pszUserType = CoTaskMemAlloc(cbData*2);
453 if (*pszUserType==NULL)
455 RegCloseKey(clsidKey);
456 return E_OUTOFMEMORY;
459 buffer = HeapAlloc(GetProcessHeap(), 0, cbData);
463 RegCloseKey(clsidKey);
464 CoTaskMemFree(*pszUserType);
466 return E_OUTOFMEMORY;
469 hres = RegQueryValueExA(clsidKey,
476 RegCloseKey(clsidKey);
479 if (hres!=ERROR_SUCCESS)
481 CoTaskMemFree(*pszUserType);
484 retVal = REGDB_E_READREGDB;
488 lstrcpyAtoW(*pszUserType, buffer);
491 HeapFree(GetProcessHeap(), 0, buffer);
496 /***********************************************************************
497 * DoDragDrop [OLE32.65]
499 HRESULT WINAPI DoDragDrop (
500 IDataObject *pDataObject, /* ptr to the data obj */
501 IDropSource* pDropSource, /* ptr to the source obj */
502 DWORD dwOKEffect, /* effects allowed by the source */
503 DWORD *pdwEffect) /* ptr to effects of the source */
505 TrackerWindowInfo trackerInfo;
506 HWND hwndTrackWindow;
509 TRACE("(DataObject %p, DropSource %p)\n", pDataObject, pDropSource);
512 * Setup the drag n drop tracking window.
514 trackerInfo.dataObject = pDataObject;
515 trackerInfo.dropSource = pDropSource;
516 trackerInfo.dwOKEffect = dwOKEffect;
517 trackerInfo.pdwEffect = pdwEffect;
518 trackerInfo.trackingDone = FALSE;
519 trackerInfo.escPressed = FALSE;
520 trackerInfo.curDragTargetHWND = 0;
521 trackerInfo.curDragTarget = 0;
523 hwndTrackWindow = CreateWindowA(OLEDD_DRAGTRACKERCLASS,
526 CW_USEDEFAULT, CW_USEDEFAULT,
527 CW_USEDEFAULT, CW_USEDEFAULT,
531 (LPVOID)&trackerInfo);
533 if (hwndTrackWindow!=0)
536 * Capture the mouse input
538 SetCapture(hwndTrackWindow);
541 * Pump messages. All mouse input should go the the capture window.
543 while (!trackerInfo.trackingDone && GetMessageA(&msg, 0, 0, 0) )
545 if ( (msg.message >= WM_KEYFIRST) &&
546 (msg.message <= WM_KEYLAST) )
549 * When keyboard messages are sent to windows on this thread, we
550 * want to ignore notify the drop source that the state changed.
551 * in the case of the Escape key, we also notify the drop source
552 * we give it a special meaning.
554 if ( (msg.message==WM_KEYDOWN) &&
555 (msg.wParam==VK_ESCAPE) )
557 trackerInfo.escPressed = TRUE;
561 * Notify the drop source.
563 OLEDD_TrackStateChange(&trackerInfo,
565 OLEDD_GetButtonState());
570 * Dispatch the messages only when it's not a keyboard message.
572 DispatchMessageA(&msg);
577 * Destroy the temporary window.
579 DestroyWindow(hwndTrackWindow);
581 return trackerInfo.returnValue;
587 /***********************************************************************
588 * OleQueryLinkFromData [OLE32.118]
590 HRESULT WINAPI OleQueryLinkFromData(
591 IDataObject* pSrcDataObject)
593 FIXME("(%p),stub!\n", pSrcDataObject);
597 /***********************************************************************
598 * OleRegGetMiscStatus [OLE32.121]
600 HRESULT WINAPI OleRegGetMiscStatus(
612 * Initialize the out parameter.
617 * Build the key name we're looking for
619 sprintf( keyName, "CLSID\\{%08lx-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}\\",
620 clsid->Data1, clsid->Data2, clsid->Data3,
621 clsid->Data4[0], clsid->Data4[1], clsid->Data4[2], clsid->Data4[3],
622 clsid->Data4[4], clsid->Data4[5], clsid->Data4[6], clsid->Data4[7] );
624 TRACE("(%s, %ld, %p)\n", keyName, dwAspect, pdwStatus);
627 * Open the class id Key
629 result = RegOpenKeyA(HKEY_CLASSES_ROOT,
633 if (result != ERROR_SUCCESS)
634 return REGDB_E_CLASSNOTREG;
639 result = RegOpenKeyA(clsidKey,
644 if (result != ERROR_SUCCESS)
646 RegCloseKey(clsidKey);
647 return REGDB_E_READREGDB;
651 * Read the default value
653 OLEUTL_ReadRegistryDWORDValue(miscStatusKey, pdwStatus);
656 * Open the key specific to the requested aspect.
658 sprintf(keyName, "%ld", dwAspect);
660 result = RegOpenKeyA(miscStatusKey,
664 if (result == ERROR_SUCCESS)
666 OLEUTL_ReadRegistryDWORDValue(aspectKey, pdwStatus);
667 RegCloseKey(aspectKey);
673 RegCloseKey(miscStatusKey);
674 RegCloseKey(clsidKey);
679 /******************************************************************************
680 * OleSetContainedObject [OLE32.128]
682 HRESULT WINAPI OleSetContainedObject(
686 IRunnableObject* runnable = NULL;
689 TRACE("(%p,%x), stub!\n", pUnknown, fContained);
691 hres = IUnknown_QueryInterface(pUnknown,
692 &IID_IRunnableObject,
697 hres = IRunnableObject_SetContainedObject(runnable, fContained);
699 IRunnableObject_Release(runnable);
707 /******************************************************************************
708 * OleLoad [OLE32.112]
710 HRESULT WINAPI OleLoad(
713 LPOLECLIENTSITE pClientSite,
716 IPersistStorage* persistStorage = NULL;
717 IOleObject* oleObject = NULL;
721 TRACE("(%p,%p,%p,%p)\n", pStg, riid, pClientSite, ppvObj);
724 * TODO, Conversion ... OleDoAutoConvert
728 * Get the class ID for the object.
730 hres = IStorage_Stat(pStg, &storageInfo, STATFLAG_NONAME);
733 * Now, try and create the handler for the object
735 hres = CoCreateInstance(&storageInfo.clsid,
737 CLSCTX_INPROC_HANDLER,
742 * If that fails, as it will most times, load the default
747 hres = OleCreateDefaultHandler(&storageInfo.clsid,
754 * If we couldn't find a handler... this is bad. Abort the whole thing.
760 * Inform the new object of it's client site.
762 hres = IOleObject_SetClientSite(oleObject, pClientSite);
765 * Initialize the object with it's IPersistStorage interface.
767 hres = IOleObject_QueryInterface(oleObject,
768 &IID_IPersistStorage,
769 (void**)&persistStorage);
773 IPersistStorage_Load(persistStorage, pStg);
775 IPersistStorage_Release(persistStorage);
776 persistStorage = NULL;
780 * Return the requested interface to the caller.
782 hres = IOleObject_QueryInterface(oleObject, riid, ppvObj);
785 * Cleanup interfaces used internally
787 IOleObject_Release(oleObject);
792 /***********************************************************************
793 * OleSave [OLE32.124]
795 HRESULT WINAPI OleSave(
796 LPPERSISTSTORAGE pPS,
803 TRACE("(%p,%p,%x)\n", pPS, pStg, fSameAsLoad);
806 * First, we transfer the class ID (if available)
808 hres = IPersistStorage_GetClassID(pPS, &objectClass);
812 WriteClassStg(pStg, &objectClass);
816 * Then, we ask the object to save itself to the
817 * storage. If it is successful, we commit the storage.
819 hres = IPersistStorage_Save(pPS, pStg, fSameAsLoad);
823 IStorage_Commit(pStg,
831 /**************************************************************************
832 * Internal methods to manage the shared OLE menu in response to the
833 * OLE***MenuDescriptor API
837 * OLEMenu_Initialize()
839 * Initializes the OLEMENU data structures.
841 static void OLEMenu_Initialize()
846 * OLEMenu_UnInitialize()
848 * Releases the OLEMENU data structures.
850 static void OLEMenu_UnInitialize()
854 /*************************************************************************
855 * OLEMenu_InstallHooks
856 * Install thread scope message hooks for WH_GETMESSAGE and WH_CALLWNDPROC
858 * RETURNS: TRUE if message hooks were succesfully installed
861 BOOL OLEMenu_InstallHooks( DWORD tid )
863 OleMenuHookItem *pHookItem = NULL;
865 /* Create an entry for the hook table */
866 if ( !(pHookItem = HeapAlloc(GetProcessHeap(), 0,
867 sizeof(OleMenuHookItem)) ) )
870 pHookItem->tid = tid;
871 pHookItem->hHeap = GetProcessHeap();
873 /* Install a thread scope message hook for WH_GETMESSAGE */
874 pHookItem->GetMsg_hHook = SetWindowsHookExA( WH_GETMESSAGE, OLEMenu_GetMsgProc,
875 0, GetCurrentThreadId() );
876 if ( !pHookItem->GetMsg_hHook )
879 /* Install a thread scope message hook for WH_CALLWNDPROC */
880 pHookItem->CallWndProc_hHook = SetWindowsHookExA( WH_CALLWNDPROC, OLEMenu_CallWndProc,
881 0, GetCurrentThreadId() );
882 if ( !pHookItem->CallWndProc_hHook )
885 /* Insert the hook table entry */
886 pHookItem->next = hook_list;
887 hook_list = pHookItem;
892 /* Unhook any hooks */
893 if ( pHookItem->GetMsg_hHook )
894 UnhookWindowsHookEx( pHookItem->GetMsg_hHook );
895 if ( pHookItem->CallWndProc_hHook )
896 UnhookWindowsHookEx( pHookItem->CallWndProc_hHook );
897 /* Release the hook table entry */
898 HeapFree(pHookItem->hHeap, 0, pHookItem );
903 /*************************************************************************
904 * OLEMenu_UnInstallHooks
905 * UnInstall thread scope message hooks for WH_GETMESSAGE and WH_CALLWNDPROC
907 * RETURNS: TRUE if message hooks were succesfully installed
910 BOOL OLEMenu_UnInstallHooks( DWORD tid )
912 OleMenuHookItem *pHookItem = NULL;
913 OleMenuHookItem **ppHook = &hook_list;
917 if ((*ppHook)->tid == tid)
920 *ppHook = pHookItem->next;
923 ppHook = &(*ppHook)->next;
925 if (!pHookItem) return FALSE;
927 /* Uninstall the hooks installed for this thread */
928 if ( !UnhookWindowsHookEx( pHookItem->GetMsg_hHook ) )
930 if ( !UnhookWindowsHookEx( pHookItem->CallWndProc_hHook ) )
933 /* Release the hook table entry */
934 HeapFree(pHookItem->hHeap, 0, pHookItem );
939 /* Release the hook table entry */
941 HeapFree(pHookItem->hHeap, 0, pHookItem );
946 /*************************************************************************
947 * OLEMenu_IsHookInstalled
948 * Tests if OLEMenu hooks have been installed for a thread
950 * RETURNS: The pointer and index of the hook table entry for the tid
951 * NULL and -1 for the index if no hooks were installed for this thread
953 OleMenuHookItem * OLEMenu_IsHookInstalled( DWORD tid )
955 OleMenuHookItem *pHookItem = NULL;
957 /* Do a simple linear search for an entry whose tid matches ours.
958 * We really need a map but efficiency is not a concern here. */
959 for (pHookItem = hook_list; pHookItem; pHookItem = pHookItem->next)
961 if ( tid == pHookItem->tid )
968 /***********************************************************************
969 * OLEMenu_FindMainMenuIndex
971 * Used by OLEMenu API to find the top level group a menu item belongs to.
972 * On success pnPos contains the index of the item in the top level menu group
974 * RETURNS: TRUE if the ID was found, FALSE on failure
976 static BOOL OLEMenu_FindMainMenuIndex( HMENU hMainMenu, HMENU hPopupMenu, UINT *pnPos )
980 nItems = GetMenuItemCount( hMainMenu );
982 for (i = 0; i < nItems; i++)
986 /* Is the current item a submenu? */
987 if ( (hsubmenu = GetSubMenu(hMainMenu, i)) )
989 /* If the handle is the same we're done */
990 if ( hsubmenu == hPopupMenu )
996 /* Recursively search without updating pnPos */
997 else if ( OLEMenu_FindMainMenuIndex( hsubmenu, hPopupMenu, NULL ) )
1009 /***********************************************************************
1010 * OLEMenu_SetIsServerMenu
1012 * Checks whether a popup menu belongs to a shared menu group which is
1013 * owned by the server, and sets the menu descriptor state accordingly.
1014 * All menu messages from these groups should be routed to the server.
1016 * RETURNS: TRUE if the popup menu is part of a server owned group
1017 * FASE if the popup menu is part of a container owned group
1019 BOOL OLEMenu_SetIsServerMenu( HMENU hmenu, OleMenuDescriptor *pOleMenuDescriptor )
1021 UINT nPos = 0, nWidth, i;
1023 pOleMenuDescriptor->bIsServerItem = FALSE;
1025 /* Don't bother searching if the popup is the combined menu itself */
1026 if ( hmenu == pOleMenuDescriptor->hmenuCombined )
1029 /* Find the menu item index in the shared OLE menu that this item belongs to */
1030 if ( !OLEMenu_FindMainMenuIndex( pOleMenuDescriptor->hmenuCombined, hmenu, &nPos ) )
1033 /* The group widths array has counts for the number of elements
1034 * in the groups File, Edit, Container, Object, Window, Help.
1035 * The Edit, Object & Help groups belong to the server object
1036 * and the other three belong to the container.
1037 * Loop thru the group widths and locate the group we are a member of.
1039 for ( i = 0, nWidth = 0; i < 6; i++ )
1041 nWidth += pOleMenuDescriptor->mgw.width[i];
1042 if ( nPos < nWidth )
1044 /* Odd elements are server menu widths */
1045 pOleMenuDescriptor->bIsServerItem = (i%2) ? TRUE : FALSE;
1050 return pOleMenuDescriptor->bIsServerItem;
1053 /*************************************************************************
1054 * OLEMenu_CallWndProc
1055 * Thread scope WH_CALLWNDPROC hook proc filter function (callback)
1056 * This is invoked from a message hook installed in OleSetMenuDescriptor.
1058 LRESULT CALLBACK OLEMenu_CallWndProc(INT code, WPARAM wParam, LPARAM lParam)
1060 LPCWPSTRUCT pMsg = NULL;
1061 HOLEMENU hOleMenu = 0;
1062 OleMenuDescriptor *pOleMenuDescriptor = NULL;
1063 OleMenuHookItem *pHookItem = NULL;
1066 TRACE("%i, %04x, %08x\n", code, wParam, (unsigned)lParam );
1068 /* Check if we're being asked to process the message */
1069 if ( HC_ACTION != code )
1072 /* Retrieve the current message being dispatched from lParam */
1073 pMsg = (LPCWPSTRUCT)lParam;
1075 /* Check if the message is destined for a window we are interested in:
1076 * If the window has an OLEMenu property we may need to dispatch
1077 * the menu message to its active objects window instead. */
1079 hOleMenu = (HOLEMENU)GetPropA( pMsg->hwnd, "PROP_OLEMenuDescriptor" );
1083 /* Get the menu descriptor */
1084 pOleMenuDescriptor = (OleMenuDescriptor *) GlobalLock( hOleMenu );
1085 if ( !pOleMenuDescriptor ) /* Bad descriptor! */
1088 /* Process menu messages */
1089 switch( pMsg->message )
1093 /* Reset the menu descriptor state */
1094 pOleMenuDescriptor->bIsServerItem = FALSE;
1096 /* Send this message to the server as well */
1097 SendMessageA( pOleMenuDescriptor->hwndActiveObject,
1098 pMsg->message, pMsg->wParam, pMsg->lParam );
1102 case WM_INITMENUPOPUP:
1104 /* Save the state for whether this is a server owned menu */
1105 OLEMenu_SetIsServerMenu( (HMENU)pMsg->wParam, pOleMenuDescriptor );
1111 fuFlags = HIWORD(pMsg->wParam); /* Get flags */
1112 if ( fuFlags & MF_SYSMENU )
1115 /* Save the state for whether this is a server owned popup menu */
1116 else if ( fuFlags & MF_POPUP )
1117 OLEMenu_SetIsServerMenu( (HMENU)pMsg->lParam, pOleMenuDescriptor );
1124 LPDRAWITEMSTRUCT lpdis = (LPDRAWITEMSTRUCT) pMsg->lParam;
1125 if ( pMsg->wParam != 0 || lpdis->CtlType != ODT_MENU )
1126 goto NEXTHOOK; /* Not a menu message */
1135 /* If the message was for the server dispatch it accordingly */
1136 if ( pOleMenuDescriptor->bIsServerItem )
1138 SendMessageA( pOleMenuDescriptor->hwndActiveObject,
1139 pMsg->message, pMsg->wParam, pMsg->lParam );
1143 if ( pOleMenuDescriptor )
1144 GlobalUnlock( hOleMenu );
1146 /* Lookup the hook item for the current thread */
1147 if ( !( pHookItem = OLEMenu_IsHookInstalled( GetCurrentThreadId() ) ) )
1149 /* This should never fail!! */
1150 WARN("could not retrieve hHook for current thread!\n" );
1154 /* Pass on the message to the next hooker */
1155 return CallNextHookEx( pHookItem->CallWndProc_hHook, code, wParam, lParam );
1158 /*************************************************************************
1159 * OLEMenu_GetMsgProc
1160 * Thread scope WH_GETMESSAGE hook proc filter function (callback)
1161 * This is invoked from a message hook installed in OleSetMenuDescriptor.
1163 LRESULT CALLBACK OLEMenu_GetMsgProc(INT code, WPARAM wParam, LPARAM lParam)
1166 HOLEMENU hOleMenu = 0;
1167 OleMenuDescriptor *pOleMenuDescriptor = NULL;
1168 OleMenuHookItem *pHookItem = NULL;
1171 TRACE("%i, %04x, %08x\n", code, wParam, (unsigned)lParam );
1173 /* Check if we're being asked to process a messages */
1174 if ( HC_ACTION != code )
1177 /* Retrieve the current message being dispatched from lParam */
1178 pMsg = (LPMSG)lParam;
1180 /* Check if the message is destined for a window we are interested in:
1181 * If the window has an OLEMenu property we may need to dispatch
1182 * the menu message to its active objects window instead. */
1184 hOleMenu = (HOLEMENU)GetPropA( pMsg->hwnd, "PROP_OLEMenuDescriptor" );
1188 /* Process menu messages */
1189 switch( pMsg->message )
1193 wCode = HIWORD(pMsg->wParam); /* Get notification code */
1195 goto NEXTHOOK; /* Not a menu message */
1202 /* Get the menu descriptor */
1203 pOleMenuDescriptor = (OleMenuDescriptor *) GlobalLock( hOleMenu );
1204 if ( !pOleMenuDescriptor ) /* Bad descriptor! */
1207 /* If the message was for the server dispatch it accordingly */
1208 if ( pOleMenuDescriptor->bIsServerItem )
1210 /* Change the hWnd in the message to the active objects hWnd.
1211 * The message loop which reads this message will automatically
1212 * dispatch it to the embedded objects window. */
1213 pMsg->hwnd = pOleMenuDescriptor->hwndActiveObject;
1217 if ( pOleMenuDescriptor )
1218 GlobalUnlock( hOleMenu );
1220 /* Lookup the hook item for the current thread */
1221 if ( !( pHookItem = OLEMenu_IsHookInstalled( GetCurrentThreadId() ) ) )
1223 /* This should never fail!! */
1224 WARN("could not retrieve hHook for current thread!\n" );
1228 /* Pass on the message to the next hooker */
1229 return CallNextHookEx( pHookItem->GetMsg_hHook, code, wParam, lParam );
1232 /***********************************************************************
1233 * OleCreateMenuDescriptor [OLE32.97]
1234 * Creates an OLE menu descriptor for OLE to use when dispatching
1235 * menu messages and commands.
1238 * hmenuCombined - Handle to the objects combined menu
1239 * lpMenuWidths - Pointer to array of 6 LONG's indicating menus per group
1242 HOLEMENU WINAPI OleCreateMenuDescriptor(
1243 HMENU hmenuCombined,
1244 LPOLEMENUGROUPWIDTHS lpMenuWidths)
1247 OleMenuDescriptor *pOleMenuDescriptor;
1250 if ( !hmenuCombined || !lpMenuWidths )
1253 /* Create an OLE menu descriptor */
1254 if ( !(hOleMenu = GlobalAlloc(GMEM_MOVEABLE | GMEM_ZEROINIT,
1255 sizeof(OleMenuDescriptor) ) ) )
1258 pOleMenuDescriptor = (OleMenuDescriptor *) GlobalLock( hOleMenu );
1259 if ( !pOleMenuDescriptor )
1262 /* Initialize menu group widths and hmenu */
1263 for ( i = 0; i < 6; i++ )
1264 pOleMenuDescriptor->mgw.width[i] = lpMenuWidths->width[i];
1266 pOleMenuDescriptor->hmenuCombined = hmenuCombined;
1267 pOleMenuDescriptor->bIsServerItem = FALSE;
1268 GlobalUnlock( hOleMenu );
1273 /***********************************************************************
1274 * OleDestroyMenuDescriptor [OLE32.99]
1275 * Destroy the shared menu descriptor
1277 HRESULT WINAPI OleDestroyMenuDescriptor(
1278 HOLEMENU hmenuDescriptor)
1280 if ( hmenuDescriptor )
1281 GlobalFree( hmenuDescriptor );
1285 /***********************************************************************
1286 * OleSetMenuDescriptor [OLE32.129]
1287 * Installs or removes OLE dispatching code for the containers frame window
1288 * FIXME: The lpFrame and lpActiveObject parameters are currently ignored
1289 * OLE should install context sensitive help F1 filtering for the app when
1290 * these are non null.
1293 * hOleMenu Handle to composite menu descriptor
1294 * hwndFrame Handle to containers frame window
1295 * hwndActiveObject Handle to objects in-place activation window
1296 * lpFrame Pointer to IOleInPlaceFrame on containers window
1297 * lpActiveObject Pointer to IOleInPlaceActiveObject on active in-place object
1300 * S_OK - menu installed correctly
1301 * E_FAIL, E_INVALIDARG, E_UNEXPECTED - failure
1303 HRESULT WINAPI OleSetMenuDescriptor(
1306 HWND hwndActiveObject,
1307 LPOLEINPLACEFRAME lpFrame,
1308 LPOLEINPLACEACTIVEOBJECT lpActiveObject)
1310 OleMenuDescriptor *pOleMenuDescriptor = NULL;
1313 if ( !hwndFrame || (hOleMenu && !hwndActiveObject) )
1314 return E_INVALIDARG;
1316 if ( lpFrame || lpActiveObject )
1318 FIXME("(%x, %x, %x, %p, %p), Context sensitive help filtering not implemented!\n",
1319 (unsigned int)hOleMenu,
1326 /* Set up a message hook to intercept the containers frame window messages.
1327 * The message filter is responsible for dispatching menu messages from the
1328 * shared menu which are intended for the object.
1331 if ( hOleMenu ) /* Want to install dispatching code */
1333 /* If OLEMenu hooks are already installed for this thread, fail
1334 * Note: This effectively means that OleSetMenuDescriptor cannot
1335 * be called twice in succession on the same frame window
1336 * without first calling it with a null hOleMenu to uninstall */
1337 if ( OLEMenu_IsHookInstalled( GetCurrentThreadId() ) )
1340 /* Get the menu descriptor */
1341 pOleMenuDescriptor = (OleMenuDescriptor *) GlobalLock( hOleMenu );
1342 if ( !pOleMenuDescriptor )
1343 return E_UNEXPECTED;
1345 /* Update the menu descriptor */
1346 pOleMenuDescriptor->hwndFrame = hwndFrame;
1347 pOleMenuDescriptor->hwndActiveObject = hwndActiveObject;
1349 GlobalUnlock( hOleMenu );
1350 pOleMenuDescriptor = NULL;
1352 /* Add a menu descriptor windows property to the frame window */
1353 SetPropA( hwndFrame, "PROP_OLEMenuDescriptor", hOleMenu );
1355 /* Install thread scope message hooks for WH_GETMESSAGE and WH_CALLWNDPROC */
1356 if ( !OLEMenu_InstallHooks( GetCurrentThreadId() ) )
1359 else /* Want to uninstall dispatching code */
1361 /* Uninstall the hooks */
1362 if ( !OLEMenu_UnInstallHooks( GetCurrentThreadId() ) )
1365 /* Remove the menu descriptor property from the frame window */
1366 RemovePropA( hwndFrame, "PROP_OLEMenuDescriptor" );
1372 /***********************************************************************
1373 * ReleaseStgMedium [OLE32.140]
1375 void WINAPI ReleaseStgMedium(
1378 switch (pmedium->tymed)
1382 if ( (pmedium->pUnkForRelease==0) &&
1383 (pmedium->u.hGlobal!=0) )
1384 GlobalFree(pmedium->u.hGlobal);
1386 pmedium->u.hGlobal = 0;
1391 if (pmedium->u.lpszFileName!=0)
1393 if (pmedium->pUnkForRelease==0)
1395 DeleteFileW(pmedium->u.lpszFileName);
1398 CoTaskMemFree(pmedium->u.lpszFileName);
1401 pmedium->u.lpszFileName = 0;
1406 if (pmedium->u.pstm!=0)
1408 IStream_Release(pmedium->u.pstm);
1411 pmedium->u.pstm = 0;
1414 case TYMED_ISTORAGE:
1416 if (pmedium->u.pstg!=0)
1418 IStorage_Release(pmedium->u.pstg);
1421 pmedium->u.pstg = 0;
1426 if ( (pmedium->pUnkForRelease==0) &&
1427 (pmedium->u.hGlobal!=0) )
1428 DeleteObject(pmedium->u.hGlobal);
1430 pmedium->u.hGlobal = 0;
1435 if ( (pmedium->pUnkForRelease==0) &&
1436 (pmedium->u.hMetaFilePict!=0) )
1438 DeleteMetaFile(pmedium->u.hMetaFilePict);
1439 GlobalFree(pmedium->u.hMetaFilePict);
1442 pmedium->u.hMetaFilePict = 0;
1447 if ( (pmedium->pUnkForRelease==0) &&
1448 (pmedium->u.hEnhMetaFile!=0) )
1450 DeleteEnhMetaFile(pmedium->u.hEnhMetaFile);
1453 pmedium->u.hEnhMetaFile = 0;
1462 * After cleaning up, the unknown is released
1464 if (pmedium->pUnkForRelease!=0)
1466 IUnknown_Release(pmedium->pUnkForRelease);
1467 pmedium->pUnkForRelease = 0;
1472 * OLEDD_Initialize()
1474 * Initializes the OLE drag and drop data structures.
1476 static void OLEDD_Initialize()
1480 ZeroMemory (&wndClass, sizeof(WNDCLASSA));
1481 wndClass.style = CS_GLOBALCLASS;
1482 wndClass.lpfnWndProc = (WNDPROC)OLEDD_DragTrackerWindowProc;
1483 wndClass.cbClsExtra = 0;
1484 wndClass.cbWndExtra = sizeof(TrackerWindowInfo*);
1485 wndClass.hCursor = 0;
1486 wndClass.hbrBackground = 0;
1487 wndClass.lpszClassName = OLEDD_DRAGTRACKERCLASS;
1489 RegisterClassA (&wndClass);
1493 * OLEDD_UnInitialize()
1495 * Releases the OLE drag and drop data structures.
1497 static void OLEDD_UnInitialize()
1500 * Simply empty the list.
1502 while (targetListHead!=NULL)
1504 RevokeDragDrop(targetListHead->hwndTarget);
1509 * OLEDD_InsertDropTarget()
1511 * Insert the target node in the tree.
1513 static void OLEDD_InsertDropTarget(DropTargetNode* nodeToAdd)
1515 DropTargetNode* curNode;
1516 DropTargetNode** parentNodeLink;
1519 * Iterate the tree to find the insertion point.
1521 curNode = targetListHead;
1522 parentNodeLink = &targetListHead;
1524 while (curNode!=NULL)
1526 if (nodeToAdd->hwndTarget<curNode->hwndTarget)
1529 * If the node we want to add has a smaller HWND, go left
1531 parentNodeLink = &curNode->prevDropTarget;
1532 curNode = curNode->prevDropTarget;
1534 else if (nodeToAdd->hwndTarget>curNode->hwndTarget)
1537 * If the node we want to add has a larger HWND, go right
1539 parentNodeLink = &curNode->nextDropTarget;
1540 curNode = curNode->nextDropTarget;
1545 * The item was found in the list. It shouldn't have been there
1553 * If we get here, we have found a spot for our item. The parentNodeLink
1554 * pointer points to the pointer that we have to modify.
1555 * The curNode should be NULL. We just have to establish the link and Voila!
1557 assert(curNode==NULL);
1558 assert(parentNodeLink!=NULL);
1559 assert(*parentNodeLink==NULL);
1561 *parentNodeLink=nodeToAdd;
1565 * OLEDD_ExtractDropTarget()
1567 * Removes the target node from the tree.
1569 static DropTargetNode* OLEDD_ExtractDropTarget(HWND hwndOfTarget)
1571 DropTargetNode* curNode;
1572 DropTargetNode** parentNodeLink;
1575 * Iterate the tree to find the insertion point.
1577 curNode = targetListHead;
1578 parentNodeLink = &targetListHead;
1580 while (curNode!=NULL)
1582 if (hwndOfTarget<curNode->hwndTarget)
1585 * If the node we want to add has a smaller HWND, go left
1587 parentNodeLink = &curNode->prevDropTarget;
1588 curNode = curNode->prevDropTarget;
1590 else if (hwndOfTarget>curNode->hwndTarget)
1593 * If the node we want to add has a larger HWND, go right
1595 parentNodeLink = &curNode->nextDropTarget;
1596 curNode = curNode->nextDropTarget;
1601 * The item was found in the list. Detach it from it's parent and
1602 * re-insert it's kids in the tree.
1604 assert(parentNodeLink!=NULL);
1605 assert(*parentNodeLink==curNode);
1608 * We arbitrately re-attach the left sub-tree to the parent.
1610 *parentNodeLink = curNode->prevDropTarget;
1613 * And we re-insert the right subtree
1615 if (curNode->nextDropTarget!=NULL)
1617 OLEDD_InsertDropTarget(curNode->nextDropTarget);
1621 * The node we found is still a valid node once we complete
1622 * the unlinking of the kids.
1624 curNode->nextDropTarget=NULL;
1625 curNode->prevDropTarget=NULL;
1632 * If we get here, the node is not in the tree
1638 * OLEDD_FindDropTarget()
1640 * Finds information about the drop target.
1642 static DropTargetNode* OLEDD_FindDropTarget(HWND hwndOfTarget)
1644 DropTargetNode* curNode;
1647 * Iterate the tree to find the HWND value.
1649 curNode = targetListHead;
1651 while (curNode!=NULL)
1653 if (hwndOfTarget<curNode->hwndTarget)
1656 * If the node we want to add has a smaller HWND, go left
1658 curNode = curNode->prevDropTarget;
1660 else if (hwndOfTarget>curNode->hwndTarget)
1663 * If the node we want to add has a larger HWND, go right
1665 curNode = curNode->nextDropTarget;
1670 * The item was found in the list.
1677 * If we get here, the item is not in the list
1683 * OLEDD_DragTrackerWindowProc()
1685 * This method is the WindowProcedure of the drag n drop tracking
1686 * window. During a drag n Drop operation, an invisible window is created
1687 * to receive the user input and act upon it. This procedure is in charge
1690 static LRESULT WINAPI OLEDD_DragTrackerWindowProc(
1700 LPCREATESTRUCTA createStruct = (LPCREATESTRUCTA)lParam;
1702 SetWindowLongA(hwnd, 0, (LONG)createStruct->lpCreateParams);
1709 TrackerWindowInfo* trackerInfo = (TrackerWindowInfo*)GetWindowLongA(hwnd, 0);
1713 * Get the current mouse position in screen coordinates.
1715 mousePos.x = LOWORD(lParam);
1716 mousePos.y = HIWORD(lParam);
1717 ClientToScreen(hwnd, &mousePos);
1720 * Track the movement of the mouse.
1722 OLEDD_TrackMouseMove(trackerInfo, mousePos, wParam);
1729 case WM_LBUTTONDOWN:
1730 case WM_MBUTTONDOWN:
1731 case WM_RBUTTONDOWN:
1733 TrackerWindowInfo* trackerInfo = (TrackerWindowInfo*)GetWindowLongA(hwnd, 0);
1737 * Get the current mouse position in screen coordinates.
1739 mousePos.x = LOWORD(lParam);
1740 mousePos.y = HIWORD(lParam);
1741 ClientToScreen(hwnd, &mousePos);
1744 * Notify everyone that the button state changed
1745 * TODO: Check if the "escape" key was pressed.
1747 OLEDD_TrackStateChange(trackerInfo, mousePos, wParam);
1754 * This is a window proc after all. Let's call the default.
1756 return DefWindowProcA (hwnd, uMsg, wParam, lParam);
1760 * OLEDD_TrackMouseMove()
1762 * This method is invoked while a drag and drop operation is in effect.
1763 * it will generate the appropriate callbacks in the drop source
1764 * and drop target. It will also provide the expected feedback to
1768 * trackerInfo - Pointer to the structure identifying the
1769 * drag & drop operation that is currently
1771 * mousePos - Current position of the mouse in screen
1773 * keyState - Contains the state of the shift keys and the
1774 * mouse buttons (MK_LBUTTON and the like)
1776 static void OLEDD_TrackMouseMove(
1777 TrackerWindowInfo* trackerInfo,
1781 HWND hwndNewTarget = 0;
1785 * Get the handle of the window under the mouse
1787 hwndNewTarget = WindowFromPoint(mousePos);
1790 * Every time, we re-initialize the effects passed to the
1791 * IDropTarget to the effects allowed by the source.
1793 *trackerInfo->pdwEffect = trackerInfo->dwOKEffect;
1796 * If we are hovering over the same target as before, send the
1797 * DragOver notification
1799 if ( (trackerInfo->curDragTarget != 0) &&
1800 (trackerInfo->curDragTargetHWND==hwndNewTarget) )
1802 POINTL mousePosParam;
1805 * The documentation tells me that the coordinate should be in the target
1806 * window's coordinate space. However, the tests I made tell me the
1807 * coordinates should be in screen coordinates.
1809 mousePosParam.x = mousePos.x;
1810 mousePosParam.y = mousePos.y;
1812 IDropTarget_DragOver(trackerInfo->curDragTarget,
1815 trackerInfo->pdwEffect);
1819 DropTargetNode* newDropTargetNode = 0;
1822 * If we changed window, we have to notify our old target and check for
1825 if (trackerInfo->curDragTarget!=0)
1827 IDropTarget_DragLeave(trackerInfo->curDragTarget);
1831 * Make sure we're hovering over a window.
1833 if (hwndNewTarget!=0)
1836 * Find-out if there is a drag target under the mouse
1838 newDropTargetNode = OLEDD_FindDropTarget(hwndNewTarget);
1840 trackerInfo->curDragTargetHWND = hwndNewTarget;
1841 trackerInfo->curDragTarget = newDropTargetNode ? newDropTargetNode->dropTarget : 0;
1844 * If there is, notify it that we just dragged-in
1846 if (trackerInfo->curDragTarget!=0)
1848 POINTL mousePosParam;
1851 * The documentation tells me that the coordinate should be in the target
1852 * window's coordinate space. However, the tests I made tell me the
1853 * coordinates should be in screen coordinates.
1855 mousePosParam.x = mousePos.x;
1856 mousePosParam.y = mousePos.y;
1858 IDropTarget_DragEnter(trackerInfo->curDragTarget,
1859 trackerInfo->dataObject,
1862 trackerInfo->pdwEffect);
1868 * The mouse is not over a window so we don't track anything.
1870 trackerInfo->curDragTargetHWND = 0;
1871 trackerInfo->curDragTarget = 0;
1876 * Now that we have done that, we have to tell the source to give
1877 * us feedback on the work being done by the target. If we don't
1878 * have a target, simulate no effect.
1880 if (trackerInfo->curDragTarget==0)
1882 *trackerInfo->pdwEffect = DROPEFFECT_NONE;
1885 hr = IDropSource_GiveFeedback(trackerInfo->dropSource,
1886 *trackerInfo->pdwEffect);
1889 * When we ask for feedback from the drop source, sometimes it will
1890 * do all the necessary work and sometimes it will not handle it
1891 * when that's the case, we must display the standard drag and drop
1894 if (hr==DRAGDROP_S_USEDEFAULTCURSORS)
1896 if ( (*trackerInfo->pdwEffect & DROPEFFECT_MOVE) ||
1897 (*trackerInfo->pdwEffect & DROPEFFECT_COPY) ||
1898 (*trackerInfo->pdwEffect & DROPEFFECT_LINK) )
1900 SetCursor(LoadCursorA(0, IDC_SIZEALLA));
1904 SetCursor(LoadCursorA(0, IDC_NOA));
1910 * OLEDD_TrackStateChange()
1912 * This method is invoked while a drag and drop operation is in effect.
1913 * It is used to notify the drop target/drop source callbacks when
1914 * the state of the keyboard or mouse button change.
1917 * trackerInfo - Pointer to the structure identifying the
1918 * drag & drop operation that is currently
1920 * mousePos - Current position of the mouse in screen
1922 * keyState - Contains the state of the shift keys and the
1923 * mouse buttons (MK_LBUTTON and the like)
1925 static void OLEDD_TrackStateChange(
1926 TrackerWindowInfo* trackerInfo,
1931 * Ask the drop source what to do with the operation.
1933 trackerInfo->returnValue = IDropSource_QueryContinueDrag(
1934 trackerInfo->dropSource,
1935 trackerInfo->escPressed,
1939 * All the return valued will stop the operation except the S_OK
1942 if (trackerInfo->returnValue!=S_OK)
1945 * Make sure the message loop in DoDragDrop stops
1947 trackerInfo->trackingDone = TRUE;
1950 * Release the mouse in case the drop target decides to show a popup
1951 * or a menu or something.
1956 * If we end-up over a target, drop the object in the target or
1957 * inform the target that the operation was cancelled.
1959 if (trackerInfo->curDragTarget!=0)
1961 switch (trackerInfo->returnValue)
1964 * If the source wants us to complete the operation, we tell
1965 * the drop target that we just dropped the object in it.
1967 case DRAGDROP_S_DROP:
1969 POINTL mousePosParam;
1972 * The documentation tells me that the coordinate should be
1973 * in the target window's coordinate space. However, the tests
1974 * I made tell me the coordinates should be in screen coordinates.
1976 mousePosParam.x = mousePos.x;
1977 mousePosParam.y = mousePos.y;
1979 IDropTarget_Drop(trackerInfo->curDragTarget,
1980 trackerInfo->dataObject,
1983 trackerInfo->pdwEffect);
1987 * If the source told us that we should cancel, fool the drop
1988 * target by telling it that the mouse left it's window.
1989 * Also set the drop effect to "NONE" in case the application
1990 * ignores the result of DoDragDrop.
1992 case DRAGDROP_S_CANCEL:
1993 IDropTarget_DragLeave(trackerInfo->curDragTarget);
1994 *trackerInfo->pdwEffect = DROPEFFECT_NONE;
2002 * OLEDD_GetButtonState()
2004 * This method will use the current state of the keyboard to build
2005 * a button state mask equivalent to the one passed in the
2006 * WM_MOUSEMOVE wParam.
2008 static DWORD OLEDD_GetButtonState()
2010 BYTE keyboardState[256];
2013 GetKeyboardState(keyboardState);
2015 if ( (keyboardState[VK_SHIFT] & 0x80) !=0)
2016 keyMask |= MK_SHIFT;
2018 if ( (keyboardState[VK_CONTROL] & 0x80) !=0)
2019 keyMask |= MK_CONTROL;
2021 if ( (keyboardState[VK_LBUTTON] & 0x80) !=0)
2022 keyMask |= MK_LBUTTON;
2024 if ( (keyboardState[VK_RBUTTON] & 0x80) !=0)
2025 keyMask |= MK_RBUTTON;
2027 if ( (keyboardState[VK_MBUTTON] & 0x80) !=0)
2028 keyMask |= MK_MBUTTON;
2034 * OLEDD_GetButtonState()
2036 * This method will read the default value of the registry key in
2037 * parameter and extract a DWORD value from it. The registry key value
2038 * can be in a string key or a DWORD key.
2041 * regKey - Key to read the default value from
2042 * pdwValue - Pointer to the location where the DWORD
2043 * value is returned. This value is not modified
2044 * if the value is not found.
2047 static void OLEUTL_ReadRegistryDWORDValue(
2056 lres = RegQueryValueExA(regKey,
2063 if (lres==ERROR_SUCCESS)
2068 *pdwValue = *(DWORD*)buffer;
2073 *pdwValue = (DWORD)strtoul(buffer, NULL, 10);
2079 /******************************************************************************
2080 * OleMetaFilePictFromIconAndLabel
2082 * Returns a global memory handle to a metafile which contains the icon and
2084 * I guess the result of that should look somehow like desktop icons.
2085 * If no hIcon is given, we load the icon via lpszSourceFile and iIconIndex.
2086 * This code might be wrong at some places.
2088 HGLOBAL16 WINAPI OleMetaFilePictFromIconAndLabel16(
2090 LPCOLESTR16 lpszLabel,
2091 LPCOLESTR16 lpszSourceFile,
2098 FIXME("(%04x, '%s', '%s', %d): incorrect metrics, please try to correct them !\n\n\n", hIcon, lpszLabel, lpszSourceFile, iIconIndex);
2101 if (lpszSourceFile) {
2102 HINSTANCE16 hInstance = LoadLibrary16(lpszSourceFile);
2104 /* load the icon at index from lpszSourceFile */
2105 hIcon = (HICON16)LoadIconA(hInstance, (LPCSTR)(DWORD)iIconIndex);
2106 FreeLibrary16(hInstance);
2108 return (HGLOBAL)NULL;
2111 hdc = CreateMetaFile16(NULL);
2112 DrawIcon(hdc, 0, 0, hIcon); /* FIXME */
2113 TextOutA(hdc, 0, 0, lpszLabel, 1); /* FIXME */
2114 hmf = GlobalAlloc16(0, sizeof(METAFILEPICT16));
2115 mf = (METAFILEPICT16 *)GlobalLock16(hmf);
2116 mf->mm = MM_ANISOTROPIC;
2117 mf->xExt = 20; /* FIXME: bogus */
2118 mf->yExt = 20; /* dito */
2119 mf->hMF = CloseMetaFile16(hdc);