4 * Copyright 1997 Alexandre Julliard
5 * Copyright 1997 Len White
6 * Copyright 1999 Keith Matthews
8 * Copyright 2001 Eric Pouech
9 * Copyright 2003, 2004, 2005 Dmitry Timoshkov
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License as published by the Free Software Foundation; either
14 * version 2.1 of the License, or (at your option) any later version.
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Lesser General Public License for more details.
21 * You should have received a copy of the GNU Lesser General Public
22 * License along with this library; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
27 #include "wine/port.h"
39 #include "dde_private.h"
40 #include "wine/unicode.h"
41 #include "wine/debug.h"
43 WINE_DEFAULT_DEBUG_CHANNEL(ddeml);
45 /* convert between ATOM and HSZ avoiding compiler warnings */
46 #define ATOM2HSZ(atom) ((HSZ) (ULONG_PTR)(atom))
47 #define HSZ2ATOM(hsz) ((ATOM) (ULONG_PTR)(hsz))
49 static WDML_INSTANCE* WDML_InstanceList = NULL;
50 static LONG WDML_MaxInstanceID = 0; /* OK for present, have to worry about wrap-around later */
51 const WCHAR WDML_szEventClass[] = {'W','i','n','e','D','d','e','E','v','e','n','t','C','l','a','s','s',0};
53 /* protection for instance list */
54 static CRITICAL_SECTION WDML_CritSect;
55 static CRITICAL_SECTION_DEBUG critsect_debug =
58 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
59 0, 0, { (DWORD_PTR)(__FILE__ ": WDML_CritSect") }
61 static CRITICAL_SECTION WDML_CritSect = { &critsect_debug, -1, 0, 0, 0, 0 };
63 /* ================================================================
65 * Pure DDE (non DDEML) management
67 * ================================================================ */
70 /*****************************************************************
71 * PackDDElParam (USER32.@)
76 LPARAM WINAPI PackDDElParam(UINT msg, UINT_PTR uiLo, UINT_PTR uiHi)
87 if (!(hMem = GlobalAlloc(GMEM_DDESHARE, sizeof(UINT_PTR) * 2)))
89 ERR("GlobalAlloc failed\n");
92 if (!(params = GlobalLock(hMem)))
94 ERR("GlobalLock failed (%p)\n", hMem);
106 return MAKELONG(uiLo, uiHi);
111 /*****************************************************************
112 * UnpackDDElParam (USER32.@)
118 BOOL WINAPI UnpackDDElParam(UINT msg, LPARAM lParam,
119 PUINT_PTR uiLo, PUINT_PTR uiHi)
129 if (!lParam || !(params = GlobalLock((HGLOBAL)lParam)))
135 if (uiLo) *uiLo = params[0];
136 if (uiHi) *uiHi = params[1];
137 GlobalUnlock( (HGLOBAL)lParam );
142 if (uiHi) *uiHi = lParam;
146 if (uiLo) *uiLo = LOWORD(lParam);
147 if (uiHi) *uiHi = HIWORD(lParam);
153 /*****************************************************************
154 * FreeDDElParam (USER32.@)
160 BOOL WINAPI FreeDDElParam(UINT msg, LPARAM lParam)
168 /* first check if it's a global handle */
169 if (!GlobalHandle( (LPVOID)lParam )) return TRUE;
170 return !GlobalFree( (HGLOBAL)lParam );
178 /*****************************************************************
179 * ReuseDDElParam (USER32.@)
184 LPARAM WINAPI ReuseDDElParam(LPARAM lParam, UINT msgIn, UINT msgOut,
185 UINT_PTR uiLo, UINT_PTR uiHi)
201 if (!lParam) return 0;
202 if (!(params = GlobalLock( (HGLOBAL)lParam )))
204 ERR("GlobalLock failed\n");
209 TRACE("Reusing pack %08lx %08lx\n", uiLo, uiHi);
210 GlobalUnlock( (HGLOBAL)lParam );
214 FreeDDElParam( msgIn, lParam );
218 FreeDDElParam( msgIn, lParam );
219 return MAKELPARAM(uiLo, uiHi);
223 return PackDDElParam( msgOut, uiLo, uiHi );
227 /*****************************************************************
228 * ImpersonateDdeClientWindow (USER32.@)
231 * hWndClient [I] handle to DDE client window
232 * hWndServer [I] handle to DDE server window
234 BOOL WINAPI ImpersonateDdeClientWindow(HWND hWndClient, HWND hWndServer)
236 FIXME("(%p %p): stub\n", hWndClient, hWndServer);
240 /*****************************************************************
241 * DdeSetQualityOfService (USER32.@)
244 BOOL WINAPI DdeSetQualityOfService(HWND hwndClient, CONST SECURITY_QUALITY_OF_SERVICE *pqosNew,
245 PSECURITY_QUALITY_OF_SERVICE pqosPrev)
247 FIXME("(%p %p %p): stub\n", hwndClient, pqosNew, pqosPrev);
251 /* ================================================================
253 * Instance management
255 * ================================================================ */
257 /******************************************************************************
258 * IncrementInstanceId
260 * generic routine to increment the max instance Id and allocate a new application instance
262 static void WDML_IncrementInstanceId(WDML_INSTANCE* pInstance)
264 DWORD id = InterlockedIncrement(&WDML_MaxInstanceID);
266 pInstance->instanceID = id;
267 TRACE("New instance id %d allocated\n", id);
270 /******************************************************************
275 static LRESULT CALLBACK WDML_EventProc(HWND hwndEvent, UINT uMsg, WPARAM wParam, LPARAM lParam)
277 WDML_INSTANCE* pInstance;
282 case WM_WDML_REGISTER:
283 pInstance = WDML_GetInstanceFromWnd(hwndEvent);
284 /* try calling the Callback */
285 if (pInstance && !(pInstance->CBFflags & CBF_SKIP_REGISTRATIONS))
287 hsz1 = WDML_MakeHszFromAtom(pInstance, wParam);
288 hsz2 = WDML_MakeHszFromAtom(pInstance, lParam);
289 WDML_InvokeCallback(pInstance, XTYP_REGISTER, 0, 0, hsz1, hsz2, 0, 0, 0);
290 WDML_DecHSZ(pInstance, hsz1);
291 WDML_DecHSZ(pInstance, hsz2);
295 case WM_WDML_UNREGISTER:
296 pInstance = WDML_GetInstanceFromWnd(hwndEvent);
297 if (pInstance && !(pInstance->CBFflags & CBF_SKIP_UNREGISTRATIONS))
299 hsz1 = WDML_MakeHszFromAtom(pInstance, wParam);
300 hsz2 = WDML_MakeHszFromAtom(pInstance, lParam);
301 WDML_InvokeCallback(pInstance, XTYP_UNREGISTER, 0, 0, hsz1, hsz2, 0, 0, 0);
302 WDML_DecHSZ(pInstance, hsz1);
303 WDML_DecHSZ(pInstance, hsz2);
307 case WM_WDML_CONNECT_CONFIRM:
308 pInstance = WDML_GetInstanceFromWnd(hwndEvent);
309 if (pInstance && !(pInstance->CBFflags & CBF_SKIP_CONNECT_CONFIRMS))
312 /* confirm connection...
313 * lookup for this conv handle
315 HWND client = WIN_GetFullHandle( (HWND)wParam );
316 HWND server = WIN_GetFullHandle( (HWND)lParam );
317 for (pConv = pInstance->convs[WDML_SERVER_SIDE]; pConv != NULL; pConv = pConv->next)
319 if (pConv->hwndClient == client && pConv->hwndServer == server)
324 pConv->wStatus |= ST_ISLOCAL;
326 WDML_InvokeCallback(pInstance, XTYP_CONNECT_CONFIRM, 0, (HCONV)pConv,
327 pConv->hszTopic, pConv->hszService, 0, 0,
328 (pConv->wStatus & ST_ISSELF) ? 1 : 0);
333 return DefWindowProcW(hwndEvent, uMsg, wParam, lParam);
338 /******************************************************************
343 UINT WDML_Initialize(LPDWORD pidInst, PFNCALLBACK pfnCallback,
344 DWORD afCmd, DWORD ulRes, BOOL bUnicode)
346 WDML_INSTANCE* pInstance;
347 WDML_INSTANCE* reference_inst;
349 WNDCLASSEXW wndclass;
351 TRACE("(%p,%p,0x%x,%d,0x%x)\n",
352 pidInst, pfnCallback, afCmd, ulRes, bUnicode);
356 ERR("Reserved value not zero? What does this mean?\n");
357 /* trap this and no more until we know more */
358 return DMLERR_NO_ERROR;
361 /* grab enough heap for one control struct - not really necessary for re-initialise
362 * but allows us to use same validation routines */
363 pInstance = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_INSTANCE));
364 if (pInstance == NULL)
366 /* catastrophe !! warn user & abort */
367 ERR("Instance create failed - out of memory\n");
368 return DMLERR_SYS_ERROR;
370 pInstance->next = NULL;
371 pInstance->monitor = (afCmd | APPCLASS_MONITOR);
373 /* messy bit, spec implies that 'Client Only' can be set in 2 different ways, catch 1 here */
375 pInstance->clientOnly = afCmd & APPCMD_CLIENTONLY;
376 pInstance->instanceID = *pidInst; /* May need to add calling proc Id */
377 pInstance->threadID = GetCurrentThreadId();
378 pInstance->callback = *pfnCallback;
379 pInstance->unicode = bUnicode;
380 pInstance->nodeList = NULL; /* node will be added later */
381 pInstance->monitorFlags = afCmd & MF_MASK;
382 pInstance->wStatus = 0;
383 pInstance->lastError = DMLERR_NO_ERROR;
384 pInstance->servers = NULL;
385 pInstance->convs[0] = NULL;
386 pInstance->convs[1] = NULL;
387 pInstance->links[0] = NULL;
388 pInstance->links[1] = NULL;
390 /* isolate CBF flags in one go, expect this will go the way of all attempts to be clever !! */
392 pInstance->CBFflags = afCmd^((afCmd&MF_MASK)|((afCmd&APPCMD_MASK)|(afCmd&APPCLASS_MASK)));
394 if (!pInstance->clientOnly)
396 /* Check for other way of setting Client-only !! */
397 pInstance->clientOnly =
398 (pInstance->CBFflags & CBF_FAIL_ALLSVRXACTIONS) == CBF_FAIL_ALLSVRXACTIONS;
401 TRACE("instance created - checking validity\n");
405 /* Initialisation of new Instance Identifier */
406 TRACE("new instance, callback %p flags %X\n",pfnCallback,afCmd);
408 EnterCriticalSection(&WDML_CritSect);
410 if (WDML_InstanceList == NULL)
412 /* can't be another instance in this case, assign to the base pointer */
413 WDML_InstanceList = pInstance;
415 /* since first must force filter of XTYP_CONNECT and XTYP_WILDCONNECT for
417 * ------------------------------- NOTE NOTE NOTE --------------------------
419 * the manual is not clear if this condition
420 * applies to the first call to DdeInitialize from an application, or the
421 * first call for a given callback !!!
424 pInstance->CBFflags = pInstance->CBFflags|APPCMD_FILTERINITS;
425 TRACE("First application instance detected OK\n");
426 /* allocate new instance ID */
427 WDML_IncrementInstanceId(pInstance);
431 /* really need to chain the new one in to the latest here, but after checking conditions
432 * such as trying to start a conversation from an application trying to monitor */
433 reference_inst = WDML_InstanceList;
434 TRACE("Subsequent application instance - starting checks\n");
435 while (reference_inst->next != NULL)
438 * This set of tests will work if application uses same instance Id
439 * at application level once allocated - which is what manual implies
440 * should happen. If someone tries to be
441 * clever (lazy ?) it will fail to pick up that later calls are for
442 * the same application - should we trust them ?
444 if (pInstance->instanceID == reference_inst->instanceID)
446 /* Check 1 - must be same Client-only state */
448 if (pInstance->clientOnly != reference_inst->clientOnly)
450 ret = DMLERR_DLL_USAGE;
454 /* Check 2 - cannot use 'Monitor' with any non-monitor modes */
456 if (pInstance->monitor != reference_inst->monitor)
458 ret = DMLERR_INVALIDPARAMETER;
462 /* Check 3 - must supply different callback address */
464 if (pInstance->callback == reference_inst->callback)
466 ret = DMLERR_DLL_USAGE;
470 reference_inst = reference_inst->next;
472 /* All cleared, add to chain */
474 TRACE("Application Instance checks finished\n");
475 WDML_IncrementInstanceId(pInstance);
476 reference_inst->next = pInstance;
478 LeaveCriticalSection(&WDML_CritSect);
480 *pidInst = pInstance->instanceID;
482 /* for deadlock issues, windows must always be created when outside the critical section */
483 wndclass.cbSize = sizeof(wndclass);
485 wndclass.lpfnWndProc = WDML_EventProc;
486 wndclass.cbClsExtra = 0;
487 wndclass.cbWndExtra = sizeof(ULONG_PTR);
488 wndclass.hInstance = 0;
490 wndclass.hCursor = 0;
491 wndclass.hbrBackground = 0;
492 wndclass.lpszMenuName = NULL;
493 wndclass.lpszClassName = WDML_szEventClass;
494 wndclass.hIconSm = 0;
496 RegisterClassExW(&wndclass);
498 pInstance->hwndEvent = CreateWindowW(WDML_szEventClass, NULL,
499 WS_POPUP, 0, 0, 0, 0,
502 SetWindowLongPtrW(pInstance->hwndEvent, GWL_WDML_INSTANCE, (ULONG_PTR)pInstance);
504 TRACE("New application instance processing finished OK\n");
508 /* Reinitialisation situation --- FIX */
509 TRACE("reinitialisation of (%p,%p,0x%x,%d): stub\n", pidInst, pfnCallback, afCmd, ulRes);
511 EnterCriticalSection(&WDML_CritSect);
513 if (WDML_InstanceList == NULL)
515 ret = DMLERR_INVALIDPARAMETER;
518 /* can't reinitialise if we have initialised nothing !! */
519 reference_inst = WDML_InstanceList;
520 /* must first check if we have been given a valid instance to re-initialise !! how do we do that ? */
522 * MS allows initialisation without specifying a callback, should we allow addition of the
523 * callback by a later call to initialise ? - if so this lot will have to change
525 while (reference_inst->next != NULL)
527 if (*pidInst == reference_inst->instanceID && pfnCallback == reference_inst->callback)
529 /* Check 1 - cannot change client-only mode if set via APPCMD_CLIENTONLY */
531 if (reference_inst->clientOnly)
533 if ((reference_inst->CBFflags & CBF_FAIL_ALLSVRXACTIONS) != CBF_FAIL_ALLSVRXACTIONS)
535 /* i.e. Was set to Client-only and through APPCMD_CLIENTONLY */
537 if (!(afCmd & APPCMD_CLIENTONLY))
539 ret = DMLERR_INVALIDPARAMETER;
544 /* Check 2 - cannot change monitor modes */
546 if (pInstance->monitor != reference_inst->monitor)
548 ret = DMLERR_INVALIDPARAMETER;
552 /* Check 3 - trying to set Client-only via APPCMD when not set so previously */
554 if ((afCmd&APPCMD_CLIENTONLY) && !reference_inst->clientOnly)
556 ret = DMLERR_INVALIDPARAMETER;
561 reference_inst = reference_inst->next;
563 if (reference_inst->next == NULL)
565 ret = DMLERR_INVALIDPARAMETER;
568 /* All checked - change relevant flags */
570 reference_inst->CBFflags = pInstance->CBFflags;
571 reference_inst->clientOnly = pInstance->clientOnly;
572 reference_inst->monitorFlags = pInstance->monitorFlags;
574 HeapFree(GetProcessHeap(), 0, pInstance); /* finished - release heap space used as work store */
576 LeaveCriticalSection(&WDML_CritSect);
579 return DMLERR_NO_ERROR;
581 HeapFree(GetProcessHeap(), 0, pInstance);
582 LeaveCriticalSection(&WDML_CritSect);
586 /******************************************************************************
587 * DdeInitializeA (USER32.@)
589 * See DdeInitializeW.
591 UINT WINAPI DdeInitializeA(LPDWORD pidInst, PFNCALLBACK pfnCallback,
592 DWORD afCmd, DWORD ulRes)
594 return WDML_Initialize(pidInst, pfnCallback, afCmd, ulRes, FALSE);
597 /******************************************************************************
598 * DdeInitializeW [USER32.@]
599 * Registers an application with the DDEML
602 * pidInst [I] Pointer to instance identifier
603 * pfnCallback [I] Pointer to callback function
604 * afCmd [I] Set of command and filter flags
608 * Success: DMLERR_NO_ERROR
609 * Failure: DMLERR_DLL_USAGE, DMLERR_INVALIDPARAMETER, DMLERR_SYS_ERROR
611 UINT WINAPI DdeInitializeW(LPDWORD pidInst, PFNCALLBACK pfnCallback,
612 DWORD afCmd, DWORD ulRes)
614 return WDML_Initialize(pidInst, pfnCallback, afCmd, ulRes, TRUE);
617 /*****************************************************************
618 * DdeUninitialize [USER32.@] Frees DDEML resources
621 * idInst [I] Instance identifier
628 BOOL WINAPI DdeUninitialize(DWORD idInst)
630 /* Stage one - check if we have a handle for this instance
632 WDML_INSTANCE* pInstance;
634 WDML_CONV* pConvNext;
636 TRACE("(%d)\n", idInst);
638 /* First check instance
640 pInstance = WDML_GetInstance(idInst);
641 if (pInstance == NULL)
644 * Needs something here to record NOT_INITIALIZED ready for DdeGetLastError
649 /* first terminate all conversations client side
650 * this shall close existing links...
652 for (pConv = pInstance->convs[WDML_CLIENT_SIDE]; pConv != NULL; pConv = pConvNext)
654 pConvNext = pConv->next;
655 DdeDisconnect((HCONV)pConv);
657 if (pInstance->convs[WDML_CLIENT_SIDE])
658 FIXME("still pending conversations\n");
660 /* then unregister all known service names */
661 DdeNameService(idInst, 0, 0, DNS_UNREGISTER);
663 /* Free the nodes that were not freed by this instance
664 * and remove the nodes from the list of HSZ nodes.
666 WDML_FreeAllHSZ(pInstance);
668 DestroyWindow(pInstance->hwndEvent);
670 /* OK now delete the instance handle itself */
672 if (WDML_InstanceList == pInstance)
674 /* special case - the first/only entry */
675 WDML_InstanceList = pInstance->next;
679 /* general case, remove entry */
682 for (inst = WDML_InstanceList; inst->next != pInstance; inst = inst->next);
683 inst->next = pInstance->next;
685 /* release the heap entry
687 HeapFree(GetProcessHeap(), 0, pInstance);
692 /******************************************************************
693 * WDML_NotifyThreadExit
697 void WDML_NotifyThreadDetach(void)
699 WDML_INSTANCE* pInstance;
701 DWORD tid = GetCurrentThreadId();
703 EnterCriticalSection(&WDML_CritSect);
704 for (pInstance = WDML_InstanceList; pInstance != NULL; pInstance = next)
706 next = pInstance->next;
707 if (pInstance->threadID == tid)
709 LeaveCriticalSection(&WDML_CritSect);
710 DdeUninitialize(pInstance->instanceID);
711 EnterCriticalSection(&WDML_CritSect);
714 LeaveCriticalSection(&WDML_CritSect);
717 /******************************************************************
718 * WDML_InvokeCallback
722 HDDEDATA WDML_InvokeCallback(WDML_INSTANCE* pInstance, UINT uType, UINT uFmt, HCONV hConv,
723 HSZ hsz1, HSZ hsz2, HDDEDATA hdata,
724 ULONG_PTR dwData1, ULONG_PTR dwData2)
728 if (pInstance == NULL)
731 TRACE("invoking CB[%p] (%x %x %p %p %p %p %lx %lx)\n",
732 pInstance->callback, uType, uFmt,
733 hConv, hsz1, hsz2, hdata, dwData1, dwData2);
734 ret = pInstance->callback(uType, uFmt, hConv, hsz1, hsz2, hdata, dwData1, dwData2);
735 TRACE("done => %p\n", ret);
739 /*****************************************************************************
742 * generic routine to return a pointer to the relevant DDE_HANDLE_ENTRY
743 * for an instance Id, or NULL if the entry does not exist
746 WDML_INSTANCE* WDML_GetInstance(DWORD instId)
748 WDML_INSTANCE* pInstance;
750 EnterCriticalSection(&WDML_CritSect);
752 for (pInstance = WDML_InstanceList; pInstance != NULL; pInstance = pInstance->next)
754 if (pInstance->instanceID == instId)
756 if (GetCurrentThreadId() != pInstance->threadID)
758 FIXME("Tried to get instance from wrong thread\n");
765 LeaveCriticalSection(&WDML_CritSect);
768 WARN("Instance entry missing for id %04x\n", instId);
772 /******************************************************************
773 * WDML_GetInstanceFromWnd
777 WDML_INSTANCE* WDML_GetInstanceFromWnd(HWND hWnd)
779 return (WDML_INSTANCE*)GetWindowLongPtrW(hWnd, GWL_WDML_INSTANCE);
782 /******************************************************************************
783 * DdeGetLastError [USER32.@] Gets most recent error code
786 * idInst [I] Instance identifier
791 UINT WINAPI DdeGetLastError(DWORD idInst)
794 WDML_INSTANCE* pInstance;
796 /* First check instance
798 pInstance = WDML_GetInstance(idInst);
799 if (pInstance == NULL)
801 error_code = DMLERR_INVALIDPARAMETER;
805 error_code = pInstance->lastError;
806 pInstance->lastError = 0;
812 /******************************************************************
813 * WDML_SetAllLastError
817 static void WDML_SetAllLastError(DWORD lastError)
820 WDML_INSTANCE* pInstance;
821 threadID = GetCurrentThreadId();
822 pInstance = WDML_InstanceList;
825 if (pInstance->threadID == threadID)
826 pInstance->lastError = lastError;
827 pInstance = pInstance->next;
831 /* ================================================================
835 * ================================================================ */
838 /******************************************************************
843 static HSZNode* WDML_FindNode(WDML_INSTANCE* pInstance, HSZ hsz)
847 if (pInstance == NULL) return NULL;
849 for (pNode = pInstance->nodeList; pNode != NULL; pNode = pNode->next)
851 if (pNode->hsz == hsz) break;
853 if (!pNode) WARN("HSZ %p not found\n", hsz);
857 /******************************************************************
858 * WDML_MakeAtomFromHsz
860 * Creates a global atom from an existing HSZ
861 * Generally used before sending an HSZ as an atom to a remote app
863 ATOM WDML_MakeAtomFromHsz(HSZ hsz)
865 WCHAR nameBuffer[MAX_BUFFER_LEN];
867 if (GetAtomNameW(HSZ2ATOM(hsz), nameBuffer, MAX_BUFFER_LEN))
868 return GlobalAddAtomW(nameBuffer);
869 WARN("HSZ %p not found\n", hsz);
873 /******************************************************************
874 * WDML_MakeHszFromAtom
876 * Creates a HSZ from an existing global atom
877 * Generally used while receiving a global atom and transforming it
880 HSZ WDML_MakeHszFromAtom(const WDML_INSTANCE* pInstance, ATOM atom)
882 WCHAR nameBuffer[MAX_BUFFER_LEN];
884 if (!atom) return NULL;
886 if (GlobalGetAtomNameW(atom, nameBuffer, MAX_BUFFER_LEN))
888 TRACE("%x => %s\n", atom, debugstr_w(nameBuffer));
889 return DdeCreateStringHandleW(pInstance->instanceID, nameBuffer, CP_WINUNICODE);
891 WARN("ATOM 0x%x not found\n", atom);
895 /******************************************************************
900 BOOL WDML_IncHSZ(WDML_INSTANCE* pInstance, HSZ hsz)
904 pNode = WDML_FindNode(pInstance, hsz);
905 if (!pNode) return FALSE;
911 /******************************************************************************
912 * WDML_DecHSZ (INTERNAL)
914 * Decrease the ref count of an HSZ. If it reaches 0, the node is removed from the list
916 * Returns -1 is the HSZ isn't found, otherwise it's the current (after --) of the ref count
918 BOOL WDML_DecHSZ(WDML_INSTANCE* pInstance, HSZ hsz)
920 HSZNode* pPrev = NULL;
923 for (pCurrent = pInstance->nodeList; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
925 /* If we found the node we were looking for and its ref count is one,
928 if (pCurrent->hsz == hsz)
930 if (--pCurrent->refCount == 0)
932 if (pCurrent == pInstance->nodeList)
934 pInstance->nodeList = pCurrent->next;
938 pPrev->next = pCurrent->next;
940 HeapFree(GetProcessHeap(), 0, pCurrent);
941 DeleteAtom(HSZ2ATOM(hsz));
946 WARN("HSZ %p not found\n", hsz);
951 /******************************************************************************
952 * WDML_FreeAllHSZ (INTERNAL)
954 * Frees up all the strings still allocated in the list and
955 * remove all the nodes from the list of HSZ nodes.
957 void WDML_FreeAllHSZ(WDML_INSTANCE* pInstance)
959 /* Free any strings created in this instance.
961 while (pInstance->nodeList != NULL)
963 DdeFreeStringHandle(pInstance->instanceID, pInstance->nodeList->hsz);
967 /******************************************************************************
968 * InsertHSZNode (INTERNAL)
970 * Insert a node to the head of the list.
972 static void WDML_InsertHSZNode(WDML_INSTANCE* pInstance, HSZ hsz)
976 HSZNode* pNew = NULL;
977 /* Create a new node for this HSZ.
979 pNew = HeapAlloc(GetProcessHeap(), 0, sizeof(HSZNode));
983 pNew->next = pInstance->nodeList;
985 pInstance->nodeList = pNew;
989 ERR("Primary HSZ Node allocation failed - out of memory\n");
994 /******************************************************************
999 static int WDML_QueryString(WDML_INSTANCE* pInstance, HSZ hsz, LPVOID ptr, DWORD cchMax,
1002 WCHAR pString[MAX_BUFFER_LEN];
1004 /* If psz is null, we have to return only the length
1010 cchMax = MAX_BUFFER_LEN;
1013 /* if there is no input windows returns a NULL string */
1024 ret = GetAtomNameA(HSZ2ATOM(hsz), ptr, cchMax);
1027 ret = GetAtomNameW(HSZ2ATOM(hsz), ptr, cchMax);
1030 ERR("Unknown code page %d\n", codepage);
1036 /*****************************************************************
1037 * DdeQueryStringA [USER32.@]
1039 DWORD WINAPI DdeQueryStringA(DWORD idInst, HSZ hsz, LPSTR psz, DWORD cchMax, INT iCodePage)
1042 WDML_INSTANCE* pInstance;
1044 TRACE("(%d, %p, %p, %d, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
1046 /* First check instance
1048 pInstance = WDML_GetInstance(idInst);
1049 if (pInstance != NULL)
1051 if (iCodePage == 0) iCodePage = CP_WINANSI;
1052 ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
1055 TRACE("returning %d (%s)\n", ret, debugstr_a(psz));
1059 /*****************************************************************
1060 * DdeQueryStringW [USER32.@]
1063 DWORD WINAPI DdeQueryStringW(DWORD idInst, HSZ hsz, LPWSTR psz, DWORD cchMax, INT iCodePage)
1066 WDML_INSTANCE* pInstance;
1068 TRACE("(%d, %p, %p, %d, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
1070 /* First check instance
1072 pInstance = WDML_GetInstance(idInst);
1073 if (pInstance != NULL)
1075 if (iCodePage == 0) iCodePage = CP_WINUNICODE;
1076 ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
1079 TRACE("returning %d (%s)\n", ret, debugstr_w(psz));
1083 /******************************************************************
1088 static HSZ WDML_CreateString(WDML_INSTANCE* pInstance, LPCVOID ptr, int codepage)
1095 hsz = ATOM2HSZ(AddAtomA(ptr));
1096 TRACE("added atom %s with HSZ %p,\n", debugstr_a(ptr), hsz);
1099 hsz = ATOM2HSZ(AddAtomW(ptr));
1100 TRACE("added atom %s with HSZ %p,\n", debugstr_w(ptr), hsz);
1103 ERR("Unknown code page %d\n", codepage);
1106 WDML_InsertHSZNode(pInstance, hsz);
1110 /*****************************************************************
1111 * DdeCreateStringHandleA [USER32.@]
1113 * See DdeCreateStringHandleW.
1115 HSZ WINAPI DdeCreateStringHandleA(DWORD idInst, LPCSTR psz, INT codepage)
1118 WDML_INSTANCE* pInstance;
1120 TRACE("(%d,%s,%d)\n", idInst, debugstr_a(psz), codepage);
1122 pInstance = WDML_GetInstance(idInst);
1123 if (pInstance == NULL)
1124 WDML_SetAllLastError(DMLERR_INVALIDPARAMETER);
1127 if (codepage == 0) codepage = CP_WINANSI;
1128 hsz = WDML_CreateString(pInstance, psz, codepage);
1135 /******************************************************************************
1136 * DdeCreateStringHandleW [USER32.@] Creates handle to identify string
1139 * idInst [I] Instance identifier
1140 * psz [I] Pointer to string
1141 * codepage [I] Code page identifier
1143 * Success: String handle
1146 HSZ WINAPI DdeCreateStringHandleW(DWORD idInst, LPCWSTR psz, INT codepage)
1148 WDML_INSTANCE* pInstance;
1151 pInstance = WDML_GetInstance(idInst);
1152 if (pInstance == NULL)
1153 WDML_SetAllLastError(DMLERR_INVALIDPARAMETER);
1156 if (codepage == 0) codepage = CP_WINUNICODE;
1157 hsz = WDML_CreateString(pInstance, psz, codepage);
1163 /*****************************************************************
1164 * DdeFreeStringHandle (USER32.@)
1169 BOOL WINAPI DdeFreeStringHandle(DWORD idInst, HSZ hsz)
1171 WDML_INSTANCE* pInstance;
1174 TRACE("(%d,%p):\n", idInst, hsz);
1176 /* First check instance
1178 pInstance = WDML_GetInstance(idInst);
1180 ret = WDML_DecHSZ(pInstance, hsz);
1185 /*****************************************************************
1186 * DdeKeepStringHandle (USER32.@)
1192 BOOL WINAPI DdeKeepStringHandle(DWORD idInst, HSZ hsz)
1194 WDML_INSTANCE* pInstance;
1197 TRACE("(%d,%p):\n", idInst, hsz);
1199 /* First check instance
1201 pInstance = WDML_GetInstance(idInst);
1203 ret = WDML_IncHSZ(pInstance, hsz);
1208 /*****************************************************************
1209 * DdeCmpStringHandles (USER32.@)
1211 * Compares the value of two string handles. This comparison is
1212 * not case sensitive.
1215 * hsz1 [I] Handle to the first string
1216 * hsz2 [I] Handle to the second string
1219 * -1 The value of hsz1 is zero or less than hsz2
1220 * 0 The values of hsz 1 and 2 are the same or both zero.
1221 * 1 The value of hsz2 is zero of less than hsz1
1223 INT WINAPI DdeCmpStringHandles(HSZ hsz1, HSZ hsz2)
1225 WCHAR psz1[MAX_BUFFER_LEN];
1226 WCHAR psz2[MAX_BUFFER_LEN];
1230 ret1 = GetAtomNameW(HSZ2ATOM(hsz1), psz1, MAX_BUFFER_LEN);
1231 ret2 = GetAtomNameW(HSZ2ATOM(hsz2), psz2, MAX_BUFFER_LEN);
1233 TRACE("(%p<%s> %p<%s>);\n", hsz1, debugstr_w(psz1), hsz2, debugstr_w(psz2));
1235 /* Make sure we found both strings. */
1236 if (ret1 == 0 && ret2 == 0)
1238 /* If both are not found, return both "zero strings". */
1243 /* If hsz1 is a not found, return hsz1 is "zero string". */
1248 /* If hsz2 is a not found, return hsz2 is "zero string". */
1253 /* Compare the two strings we got (case insensitive). */
1254 ret = lstrcmpiW(psz1, psz2);
1255 /* Since strcmp returns any number smaller than
1256 * 0 when the first string is found to be less than
1257 * the second one we must make sure we are returning
1258 * the proper values.
1273 /* ================================================================
1275 * Data handle management
1277 * ================================================================ */
1279 /*****************************************************************
1280 * DdeCreateDataHandle (USER32.@)
1282 HDDEDATA WINAPI DdeCreateDataHandle(DWORD idInst, LPBYTE pSrc, DWORD cb, DWORD cbOff,
1283 HSZ hszItem, UINT wFmt, UINT afCmd)
1286 /* Other than check for validity we will ignore for now idInst, hszItem.
1287 * The purpose of these arguments still need to be investigated.
1290 WDML_INSTANCE* pInstance;
1293 DDE_DATAHANDLE_HEAD* pDdh;
1294 WCHAR psz[MAX_BUFFER_LEN];
1296 pInstance = WDML_GetInstance(idInst);
1297 if (pInstance == NULL)
1299 WDML_SetAllLastError(DMLERR_INVALIDPARAMETER);
1303 if (!GetAtomNameW(HSZ2ATOM(hszItem), psz, MAX_BUFFER_LEN))
1305 psz[0] = HSZ2ATOM(hszItem);
1309 TRACE("(%d,%p,cb %d, cbOff %d,%p <%s>,fmt %04x,%x)\n",
1310 idInst, pSrc, cb, cbOff, hszItem, debugstr_w(psz), wFmt, afCmd);
1312 if (afCmd != 0 && afCmd != HDATA_APPOWNED)
1315 /* we use the first 4 bytes to store the size */
1316 if (!(hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, cb + cbOff + sizeof(DDE_DATAHANDLE_HEAD))))
1318 ERR("GlobalAlloc failed\n");
1322 pDdh = GlobalLock(hMem);
1329 pDdh->cfFormat = wFmt;
1330 pDdh->bAppOwned = (afCmd == HDATA_APPOWNED);
1332 pByte = (LPBYTE)(pDdh + 1);
1335 memcpy(pByte, pSrc + cbOff, cb);
1339 TRACE("=> %p\n", hMem);
1343 /*****************************************************************
1345 * DdeAddData (USER32.@)
1347 HDDEDATA WINAPI DdeAddData(HDDEDATA hData, LPBYTE pSrc, DWORD cb, DWORD cbOff)
1349 DWORD old_sz, new_sz;
1352 TRACE("(%p,%p,cb %d, cbOff %d)\n", hData, pSrc, cb, cbOff);
1354 pDst = DdeAccessData(hData, &old_sz);
1355 if (!pDst) return 0;
1357 new_sz = cb + cbOff;
1358 if (new_sz > old_sz)
1360 DdeUnaccessData(hData);
1361 hData = GlobalReAlloc(hData, new_sz + sizeof(DDE_DATAHANDLE_HEAD),
1362 GMEM_MOVEABLE | GMEM_DDESHARE);
1363 pDst = DdeAccessData(hData, &old_sz);
1366 if (!pDst) return 0;
1368 memcpy(pDst + cbOff, pSrc, cb);
1369 DdeUnaccessData(hData);
1373 /******************************************************************************
1374 * DdeGetData [USER32.@] Copies data from DDE object to local buffer
1378 * hData [I] Handle to DDE object
1379 * pDst [I] Pointer to destination buffer
1380 * cbMax [I] Amount of data to copy
1381 * cbOff [I] Offset to beginning of data
1384 * Size of memory object associated with handle
1386 DWORD WINAPI DdeGetData(HDDEDATA hData, LPBYTE pDst, DWORD cbMax, DWORD cbOff)
1388 DWORD dwSize, dwRet;
1391 TRACE("(%p,%p,%d,%d)\n", hData, pDst, cbMax, cbOff);
1393 pByte = DdeAccessData(hData, &dwSize);
1401 else if (cbOff + cbMax < dwSize)
1405 else if (cbOff < dwSize)
1407 dwRet = dwSize - cbOff;
1413 if (pDst && dwRet != 0)
1415 memcpy(pDst, pByte + cbOff, dwRet);
1417 DdeUnaccessData(hData);
1426 /*****************************************************************
1427 * DdeAccessData (USER32.@)
1429 LPBYTE WINAPI DdeAccessData(HDDEDATA hData, LPDWORD pcbDataSize)
1431 HGLOBAL hMem = hData;
1432 DDE_DATAHANDLE_HEAD* pDdh;
1434 TRACE("(%p,%p)\n", hData, pcbDataSize);
1436 pDdh = GlobalLock(hMem);
1439 ERR("Failed on GlobalLock(%p)\n", hMem);
1443 if (pcbDataSize != NULL)
1445 *pcbDataSize = GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD);
1447 TRACE("=> %p (%lu) fmt %04x\n", pDdh + 1, GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD), pDdh->cfFormat);
1448 return (LPBYTE)(pDdh + 1);
1451 /*****************************************************************
1452 * DdeUnaccessData (USER32.@)
1454 BOOL WINAPI DdeUnaccessData(HDDEDATA hData)
1456 HGLOBAL hMem = hData;
1458 TRACE("(%p)\n", hData);
1465 /*****************************************************************
1466 * DdeFreeDataHandle (USER32.@)
1468 BOOL WINAPI DdeFreeDataHandle(HDDEDATA hData)
1470 TRACE("(%p)\n", hData);
1471 return GlobalFree(hData) == 0;
1474 /******************************************************************
1479 BOOL WDML_IsAppOwned(HDDEDATA hData)
1481 DDE_DATAHANDLE_HEAD* pDdh;
1484 pDdh = GlobalLock(hData);
1487 ret = pDdh->bAppOwned;
1488 GlobalUnlock(hData);
1493 /* ================================================================
1495 * Global <=> Data handle management
1497 * ================================================================ */
1499 /* Note: we use a DDEDATA, but layout of DDEDATA, DDEADVISE and DDEPOKE structures is similar:
1501 * (bytes) (bits) comment
1502 * 0 16 bit fields for options (release, ackreq, response...)
1503 * 2 16 clipboard format
1504 * 4 ? data to be used
1506 HDDEDATA WDML_Global2DataHandle(WDML_CONV* pConv, HGLOBAL hMem, WINE_DDEHEAD* p)
1514 pDd = GlobalLock(hMem);
1515 size = GlobalSize(hMem) - sizeof(WINE_DDEHEAD);
1518 if (p) memcpy(p, pDd, sizeof(WINE_DDEHEAD));
1519 switch (pDd->cfFormat)
1522 FIXME("Unsupported format (%04x) for data %p, passing raw information\n",
1523 pDd->cfFormat, hMem);
1527 ret = DdeCreateDataHandle(pConv->instance->instanceID, pDd->Value, size, 0, 0, pDd->cfFormat, 0);
1530 if (size >= sizeof(BITMAP))
1532 BITMAP* bmp = (BITMAP*)pDd->Value;
1533 int count = bmp->bmWidthBytes * bmp->bmHeight * bmp->bmPlanes;
1534 if (size >= sizeof(BITMAP) + count)
1538 if ((hbmp = CreateBitmap(bmp->bmWidth, bmp->bmHeight,
1539 bmp->bmPlanes, bmp->bmBitsPixel,
1540 pDd->Value + sizeof(BITMAP))))
1542 ret = DdeCreateDataHandle(pConv->instance->instanceID, (LPBYTE)&hbmp, sizeof(hbmp),
1543 0, 0, CF_BITMAP, 0);
1545 else ERR("Can't create bmp\n");
1549 ERR("Wrong count: %u / %d\n", size, count);
1551 } else ERR("No bitmap header\n");
1560 /******************************************************************
1561 * WDML_DataHandle2Global
1565 HGLOBAL WDML_DataHandle2Global(HDDEDATA hDdeData, BOOL fResponse, BOOL fRelease,
1566 BOOL fDeferUpd, BOOL fAckReq)
1568 DDE_DATAHANDLE_HEAD* pDdh;
1572 dwSize = GlobalSize(hDdeData) - sizeof(DDE_DATAHANDLE_HEAD);
1573 pDdh = GlobalLock(hDdeData);
1576 WINE_DDEHEAD* wdh = NULL;
1578 switch (pDdh->cfFormat)
1581 FIXME("Unsupported format (%04x) for data %p, passing raw information\n",
1582 pDdh->cfFormat, hDdeData);
1586 hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, sizeof(WINE_DDEHEAD) + dwSize);
1587 if (hMem && (wdh = GlobalLock(hMem)))
1589 memcpy(wdh + 1, pDdh + 1, dwSize);
1593 if (dwSize >= sizeof(HBITMAP))
1597 HBITMAP hbmp = *(HBITMAP*)(pDdh + 1);
1599 if (GetObjectW(hbmp, sizeof(bmp), &bmp))
1601 count = bmp.bmWidthBytes * bmp.bmHeight;
1602 hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE,
1603 sizeof(WINE_DDEHEAD) + sizeof(bmp) + count);
1604 if (hMem && (wdh = GlobalLock(hMem)))
1606 memcpy(wdh + 1, &bmp, sizeof(bmp));
1607 GetBitmapBits(hbmp, count, ((char*)(wdh + 1)) + sizeof(bmp));
1616 wdh->fResponse = fResponse;
1617 wdh->fRelease = fRelease;
1618 wdh->fDeferUpd = fDeferUpd;
1619 wdh->fAckReq = fAckReq;
1620 wdh->cfFormat = pDdh->cfFormat;
1623 GlobalUnlock(hDdeData);
1629 /* ================================================================
1633 * ================================================================ */
1635 /******************************************************************
1640 WDML_SERVER* WDML_AddServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1642 static const WCHAR fmtW[] = {'%','s','(','0','x','%','*','x',')',0};
1643 WDML_SERVER* pServer;
1647 pServer = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_SERVER));
1648 if (pServer == NULL) return NULL;
1650 pServer->hszService = hszService;
1651 WDML_IncHSZ(pInstance, hszService);
1653 DdeQueryStringW(pInstance->instanceID, hszService, buf1, 256, CP_WINUNICODE);
1654 snprintfW(buf2, 256, fmtW, buf1, 2*sizeof(ULONG_PTR), GetCurrentProcessId());
1655 pServer->hszServiceSpec = DdeCreateStringHandleW(pInstance->instanceID, buf2, CP_WINUNICODE);
1657 pServer->atomService = WDML_MakeAtomFromHsz(pServer->hszService);
1658 pServer->atomServiceSpec = WDML_MakeAtomFromHsz(pServer->hszServiceSpec);
1660 pServer->filterOn = TRUE;
1662 pServer->next = pInstance->servers;
1663 pInstance->servers = pServer;
1667 /******************************************************************
1672 void WDML_RemoveServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1674 WDML_SERVER* pPrev = NULL;
1675 WDML_SERVER* pServer = NULL;
1677 WDML_CONV* pConvNext;
1679 pServer = pInstance->servers;
1681 while (pServer != NULL)
1683 if (DdeCmpStringHandles(pServer->hszService, hszService) == 0)
1685 WDML_BroadcastDDEWindows(WDML_szEventClass, WM_WDML_UNREGISTER,
1686 pServer->atomService, pServer->atomServiceSpec);
1687 /* terminate all conversations for given topic */
1688 for (pConv = pInstance->convs[WDML_SERVER_SIDE]; pConv != NULL; pConv = pConvNext)
1690 pConvNext = pConv->next;
1691 if (DdeCmpStringHandles(pConv->hszService, hszService) == 0)
1693 HWND client = pConv->hwndClient, server = pConv->hwndServer;
1694 WDML_RemoveConv(pConv, WDML_SERVER_SIDE);
1695 /* don't care about return code (whether client window is present or not) */
1696 PostMessageW(client, WM_DDE_TERMINATE, (WPARAM)server, 0);
1699 if (pServer == pInstance->servers)
1701 pInstance->servers = pServer->next;
1705 pPrev->next = pServer->next;
1708 DestroyWindow(pServer->hwndServer);
1709 WDML_DecHSZ(pInstance, pServer->hszServiceSpec);
1710 WDML_DecHSZ(pInstance, pServer->hszService);
1712 GlobalDeleteAtom(pServer->atomService);
1713 GlobalDeleteAtom(pServer->atomServiceSpec);
1715 HeapFree(GetProcessHeap(), 0, pServer);
1720 pServer = pServer->next;
1724 /*****************************************************************************
1727 * generic routine to return a pointer to the relevant ServiceNode
1728 * for a given service name, or NULL if the entry does not exist
1731 WDML_SERVER* WDML_FindServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1733 WDML_SERVER* pServer;
1735 for (pServer = pInstance->servers; pServer != NULL; pServer = pServer->next)
1737 if (hszService == pServer->hszService)
1742 TRACE("Service name missing\n");
1746 /* ================================================================
1748 * Conversation management
1750 * ================================================================ */
1752 /******************************************************************
1757 WDML_CONV* WDML_AddConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
1758 HSZ hszService, HSZ hszTopic, HWND hwndClient, HWND hwndServer)
1762 /* no conversation yet, add it */
1763 pConv = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_CONV));
1764 if (!pConv) return NULL;
1766 pConv->instance = pInstance;
1767 WDML_IncHSZ(pInstance, pConv->hszService = hszService);
1768 WDML_IncHSZ(pInstance, pConv->hszTopic = hszTopic);
1769 pConv->magic = WDML_CONV_MAGIC;
1770 pConv->hwndServer = hwndServer;
1771 pConv->hwndClient = hwndClient;
1772 pConv->transactions = NULL;
1774 pConv->wStatus = (side == WDML_CLIENT_SIDE) ? ST_CLIENT : 0L;
1775 pConv->wStatus |= pInstance->wStatus;
1776 /* check if both side of the conversation are of the same instance */
1777 if (GetWindowThreadProcessId(hwndClient, NULL) == GetWindowThreadProcessId(hwndServer, NULL) &&
1778 WDML_GetInstanceFromWnd(hwndClient) == WDML_GetInstanceFromWnd(hwndServer))
1780 pConv->wStatus |= ST_ISSELF;
1782 pConv->wConvst = XST_NULL;
1784 pConv->next = pInstance->convs[side];
1785 pInstance->convs[side] = pConv;
1787 TRACE("pConv->wStatus %04x pInstance(%p)\n", pConv->wStatus, pInstance);
1792 /******************************************************************
1797 WDML_CONV* WDML_FindConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
1798 HSZ hszService, HSZ hszTopic)
1800 WDML_CONV* pCurrent = NULL;
1802 for (pCurrent = pInstance->convs[side]; pCurrent != NULL; pCurrent = pCurrent->next)
1804 if (DdeCmpStringHandles(pCurrent->hszService, hszService) == 0 &&
1805 DdeCmpStringHandles(pCurrent->hszTopic, hszTopic) == 0)
1814 /******************************************************************
1819 void WDML_RemoveConv(WDML_CONV* pRef, WDML_SIDE side)
1821 WDML_CONV* pPrev = NULL;
1822 WDML_CONV* pCurrent;
1824 WDML_XACT* pXActNext;
1830 /* remove any pending transaction */
1831 for (pXAct = pRef->transactions; pXAct != NULL; pXAct = pXActNext)
1833 pXActNext = pXAct->next;
1834 WDML_FreeTransaction(pRef->instance, pXAct, TRUE);
1837 WDML_RemoveAllLinks(pRef->instance, pRef, side);
1839 /* FIXME: should we keep the window around ? it seems so (at least on client side
1840 * to let QueryConvInfo work after conv termination, but also to implement
1843 /* destroy conversation window, but first remove pConv from hWnd.
1844 * this would help the wndProc do appropriate handling upon a WM_DESTROY message
1846 hWnd = (side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer;
1847 SetWindowLongPtrW(hWnd, GWL_WDML_CONVERSATION, 0);
1849 DestroyWindow((side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer);
1851 WDML_DecHSZ(pRef->instance, pRef->hszService);
1852 WDML_DecHSZ(pRef->instance, pRef->hszTopic);
1854 for (pCurrent = pRef->instance->convs[side]; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
1856 if (pCurrent == pRef)
1858 if (pCurrent == pRef->instance->convs[side])
1860 pRef->instance->convs[side] = pCurrent->next;
1864 pPrev->next = pCurrent->next;
1866 pCurrent->magic = 0;
1867 HeapFree(GetProcessHeap(), 0, pCurrent);
1873 /******************************************************************
1874 * WDML_EnableCallback
1876 static BOOL WDML_EnableCallback(WDML_CONV *pConv, UINT wCmd)
1878 if (wCmd == EC_DISABLE)
1880 pConv->wStatus |= ST_BLOCKED;
1881 TRACE("EC_DISABLE: conv %p status flags %04x\n", pConv, pConv->wStatus);
1885 if (wCmd == EC_QUERYWAITING)
1886 return pConv->transactions ? TRUE : FALSE;
1888 if (wCmd != EC_ENABLEALL && wCmd != EC_ENABLEONE)
1890 FIXME("Unknown command code %04x\n", wCmd);
1894 if (wCmd == EC_ENABLEALL)
1896 pConv->wStatus &= ~ST_BLOCKED;
1897 TRACE("EC_ENABLEALL: conv %p status flags %04x\n", pConv, pConv->wStatus);
1900 while (pConv->transactions)
1902 WDML_XACT *pXAct = pConv->transactions;
1904 if (pConv->wStatus & ST_CLIENT)
1906 /* transaction should be in the queue until handled */
1907 WDML_ClientHandle(pConv, pXAct, 0, NULL);
1908 WDML_UnQueueTransaction(pConv, pXAct);
1912 /* transaction should be removed from the queue before handling */
1913 WDML_UnQueueTransaction(pConv, pXAct);
1914 WDML_ServerHandle(pConv, pXAct);
1917 WDML_FreeTransaction(pConv->instance, pXAct, TRUE);
1919 if (wCmd == EC_ENABLEONE) break;
1924 /*****************************************************************
1925 * DdeEnableCallback (USER32.@)
1927 BOOL WINAPI DdeEnableCallback(DWORD idInst, HCONV hConv, UINT wCmd)
1932 TRACE("(%d, %p, %04x)\n", idInst, hConv, wCmd);
1936 pConv = WDML_GetConv(hConv, TRUE);
1938 if (pConv && pConv->instance->instanceID == idInst)
1939 ret = WDML_EnableCallback(pConv, wCmd);
1943 WDML_INSTANCE *pInstance = WDML_GetInstance(idInst);
1948 TRACE("adding flags %04x to instance %p\n", wCmd, pInstance);
1949 pInstance->wStatus |= wCmd;
1951 if (wCmd == EC_DISABLE)
1953 pInstance->wStatus |= ST_BLOCKED;
1954 TRACE("EC_DISABLE: inst %p status flags %04x\n", pInstance, pInstance->wStatus);
1956 else if (wCmd == EC_ENABLEALL)
1958 pInstance->wStatus &= ~ST_BLOCKED;
1959 TRACE("EC_ENABLEALL: inst %p status flags %04x\n", pInstance, pInstance->wStatus);
1964 for (pConv = pInstance->convs[WDML_CLIENT_SIDE]; pConv != NULL; pConv = pConv->next)
1966 ret = WDML_EnableCallback(pConv, wCmd);
1967 if (ret && wCmd == EC_QUERYWAITING) break;
1974 /******************************************************************
1979 WDML_CONV* WDML_GetConv(HCONV hConv, BOOL checkConnected)
1981 WDML_CONV* pConv = (WDML_CONV*)hConv;
1983 /* FIXME: should do better checking */
1984 if (pConv == NULL || pConv->magic != WDML_CONV_MAGIC) return NULL;
1986 if (!pConv->instance)
1988 WARN("wrong thread ID, no instance\n");
1992 if (pConv->instance->threadID != GetCurrentThreadId())
1994 WARN("wrong thread ID\n");
1995 pConv->instance->lastError = DMLERR_INVALIDPARAMETER; /* FIXME: check */
1999 if (checkConnected && !(pConv->wStatus & ST_CONNECTED))
2001 WARN("found conv but ain't connected\n");
2002 pConv->instance->lastError = DMLERR_NO_CONV_ESTABLISHED;
2009 /******************************************************************
2010 * WDML_GetConvFromWnd
2014 WDML_CONV* WDML_GetConvFromWnd(HWND hWnd)
2016 return (WDML_CONV*)GetWindowLongPtrW(hWnd, GWL_WDML_CONVERSATION);
2019 /******************************************************************
2024 BOOL WDML_PostAck(WDML_CONV* pConv, WDML_SIDE side, WORD appRetCode,
2025 BOOL fBusy, BOOL fAck, UINT_PTR pmt, LPARAM lParam, UINT oldMsg)
2030 if (side == WDML_SERVER_SIDE)
2032 from = pConv->hwndServer;
2033 to = pConv->hwndClient;
2037 to = pConv->hwndServer;
2038 from = pConv->hwndClient;
2041 ddeAck.bAppReturnCode = appRetCode;
2042 ddeAck.reserved = 0;
2043 ddeAck.fBusy = fBusy;
2046 TRACE("Posting a %s ack\n", ddeAck.fAck ? "positive" : "negative");
2048 lParam = (lParam) ? ReuseDDElParam(lParam, oldMsg, WM_DDE_ACK, *(WORD*)&ddeAck, pmt) :
2049 PackDDElParam(WM_DDE_ACK, *(WORD*)&ddeAck, pmt);
2050 if (!PostMessageW(to, WM_DDE_ACK, (WPARAM)from, lParam))
2052 pConv->wStatus &= ~ST_CONNECTED;
2053 pConv->instance->lastError = DMLERR_POSTMSG_FAILED;
2054 FreeDDElParam(WM_DDE_ACK, lParam);
2060 /*****************************************************************
2061 * DdeSetUserHandle (USER32.@)
2063 BOOL WINAPI DdeSetUserHandle(HCONV hConv, DWORD id, DWORD hUser)
2067 pConv = WDML_GetConv(hConv, FALSE);
2073 pConv->hUser = hUser;
2079 pXAct = WDML_FindTransaction(pConv, id);
2082 pXAct->hUser = hUser;
2086 pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
2093 /******************************************************************
2094 * WDML_GetLocalConvInfo
2098 static BOOL WDML_GetLocalConvInfo(WDML_CONV* pConv, CONVINFO* ci, DWORD id)
2104 ci->hConvPartner = (pConv->wStatus & ST_ISLOCAL) ? (HCONV)((ULONG_PTR)pConv | 1) : 0;
2105 ci->hszSvcPartner = pConv->hszService;
2106 ci->hszServiceReq = pConv->hszService; /* FIXME: they shouldn't be the same, should they ? */
2107 ci->hszTopic = pConv->hszTopic;
2108 ci->wStatus = pConv->wStatus;
2110 side = (pConv->wStatus & ST_CLIENT) ? WDML_CLIENT_SIDE : WDML_SERVER_SIDE;
2112 for (pLink = pConv->instance->links[side]; pLink != NULL; pLink = pLink->next)
2114 if (pLink->hConv == (HCONV)pConv)
2116 ci->wStatus |= ST_ADVISE;
2121 /* FIXME: non handled status flags:
2127 ci->wConvst = pConv->wConvst; /* FIXME */
2129 ci->wLastError = 0; /* FIXME: note it's not the instance last error */
2131 ci->ConvCtxt = pConv->convContext;
2132 if (ci->wStatus & ST_CLIENT)
2134 ci->hwnd = pConv->hwndClient;
2135 ci->hwndPartner = pConv->hwndServer;
2139 ci->hwnd = pConv->hwndServer;
2140 ci->hwndPartner = pConv->hwndClient;
2144 ci->hUser = pConv->hUser;
2153 pXAct = WDML_FindTransaction(pConv, id);
2156 ci->hUser = pXAct->hUser;
2157 ci->hszItem = pXAct->hszItem;
2158 ci->wFmt = pXAct->wFmt;
2159 ci->wType = pXAct->wType;
2164 pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
2170 /******************************************************************
2171 * DdeQueryConvInfo (USER32.@)
2173 * FIXME: Set last DDE error on failure.
2175 UINT WINAPI DdeQueryConvInfo(HCONV hConv, DWORD id, PCONVINFO lpConvInfo)
2177 UINT ret = lpConvInfo->cb;
2181 TRACE("(%p,%x,%p)\n", hConv, id, lpConvInfo);
2185 FIXME("hConv is NULL\n");
2189 pConv = WDML_GetConv(hConv, FALSE);
2192 if (!WDML_GetLocalConvInfo(pConv, &ci, id))
2197 if ((ULONG_PTR)hConv & 1)
2199 pConv = WDML_GetConv((HCONV)((ULONG_PTR)hConv & ~1), FALSE);
2201 FIXME("Request on remote conversation information is not implemented yet\n");
2207 memcpy(lpConvInfo, &ci, min((size_t)lpConvInfo->cb, sizeof(ci)));
2211 /* ================================================================
2213 * Link (hot & warm) management
2215 * ================================================================ */
2217 /******************************************************************
2222 void WDML_AddLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2223 UINT wType, HSZ hszItem, UINT wFmt)
2227 pLink = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_LINK));
2234 pLink->hConv = hConv;
2235 pLink->transactionType = wType;
2236 WDML_IncHSZ(pInstance, pLink->hszItem = hszItem);
2238 pLink->next = pInstance->links[side];
2239 pInstance->links[side] = pLink;
2242 /******************************************************************
2247 void WDML_RemoveLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2248 HSZ hszItem, UINT uFmt)
2250 WDML_LINK* pPrev = NULL;
2251 WDML_LINK* pCurrent = NULL;
2253 pCurrent = pInstance->links[side];
2255 while (pCurrent != NULL)
2257 if (pCurrent->hConv == hConv &&
2258 DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
2259 pCurrent->uFmt == uFmt)
2261 if (pCurrent == pInstance->links[side])
2263 pInstance->links[side] = pCurrent->next;
2267 pPrev->next = pCurrent->next;
2270 WDML_DecHSZ(pInstance, pCurrent->hszItem);
2271 HeapFree(GetProcessHeap(), 0, pCurrent);
2276 pCurrent = pCurrent->next;
2280 /* this function is called to remove all links related to the conv.
2281 It should be called from both client and server when terminating
2284 /******************************************************************
2285 * WDML_RemoveAllLinks
2289 void WDML_RemoveAllLinks(WDML_INSTANCE* pInstance, WDML_CONV* pConv, WDML_SIDE side)
2291 WDML_LINK* pPrev = NULL;
2292 WDML_LINK* pCurrent = NULL;
2293 WDML_LINK* pNext = NULL;
2295 pCurrent = pInstance->links[side];
2297 while (pCurrent != NULL)
2299 if (pCurrent->hConv == (HCONV)pConv)
2301 if (pCurrent == pInstance->links[side])
2303 pInstance->links[side] = pCurrent->next;
2304 pNext = pCurrent->next;
2308 pPrev->next = pCurrent->next;
2309 pNext = pCurrent->next;
2312 WDML_DecHSZ(pInstance, pCurrent->hszItem);
2314 HeapFree(GetProcessHeap(), 0, pCurrent);
2321 pCurrent = pCurrent->next;
2330 /******************************************************************
2335 WDML_LINK* WDML_FindLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2336 HSZ hszItem, BOOL use_fmt, UINT uFmt)
2338 WDML_LINK* pCurrent = NULL;
2340 for (pCurrent = pInstance->links[side]; pCurrent != NULL; pCurrent = pCurrent->next)
2342 /* we don't need to check for transaction type as it can be altered */
2344 if (pCurrent->hConv == hConv &&
2345 DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
2346 (!use_fmt || pCurrent->uFmt == uFmt))
2356 /* ================================================================
2358 * Transaction management
2360 * ================================================================ */
2362 /******************************************************************
2363 * WDML_AllocTransaction
2365 * Alloc a transaction structure for handling the message ddeMsg
2367 WDML_XACT* WDML_AllocTransaction(WDML_INSTANCE* pInstance, UINT ddeMsg,
2368 UINT wFmt, HSZ hszItem)
2371 static WORD tid = 1; /* FIXME: wrap around */
2373 pXAct = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_XACT));
2376 pInstance->lastError = DMLERR_MEMORY_ERROR;
2380 pXAct->xActID = tid++;
2381 pXAct->ddeMsg = ddeMsg;
2382 pXAct->hDdeData = 0;
2387 if ((pXAct->hszItem = hszItem)) WDML_IncHSZ(pInstance, pXAct->hszItem);
2395 /******************************************************************
2396 * WDML_QueueTransaction
2398 * Adds a transaction to the list of transaction
2400 void WDML_QueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
2404 /* advance to last in queue */
2405 for (pt = &pConv->transactions; *pt != NULL; pt = &(*pt)->next);
2409 /******************************************************************
2410 * WDML_UnQueueTransaction
2414 BOOL WDML_UnQueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
2418 for (pt = &pConv->transactions; *pt; pt = &(*pt)->next)
2429 /******************************************************************
2430 * WDML_FreeTransaction
2434 void WDML_FreeTransaction(WDML_INSTANCE* pInstance, WDML_XACT* pXAct, BOOL doFreePmt)
2436 /* free pmt(s) in pXAct too. check against one for not deleting TRUE return values */
2437 if (doFreePmt && (ULONG_PTR)pXAct->hMem > 1)
2439 GlobalFree(pXAct->hMem);
2441 if (pXAct->hszItem) WDML_DecHSZ(pInstance, pXAct->hszItem);
2443 HeapFree(GetProcessHeap(), 0, pXAct);
2446 /******************************************************************
2447 * WDML_FindTransaction
2451 WDML_XACT* WDML_FindTransaction(WDML_CONV* pConv, DWORD tid)
2456 for (pXAct = pConv->transactions; pXAct; pXAct = pXAct->next)
2458 if (pXAct->xActID == tid)
2464 /* ================================================================
2466 * Information broadcast across DDEML implementations
2468 * ================================================================ */
2470 struct tagWDML_BroadcastPmt
2478 /******************************************************************
2479 * WDML_BroadcastEnumProc
2483 static BOOL CALLBACK WDML_BroadcastEnumProc(HWND hWnd, LPARAM lParam)
2485 struct tagWDML_BroadcastPmt* s = (struct tagWDML_BroadcastPmt*)lParam;
2488 if (GetClassNameW(hWnd, buffer, 128) > 0 &&
2489 lstrcmpiW(buffer, s->clsName) == 0)
2491 PostMessageW(hWnd, s->uMsg, s->wParam, s->lParam);
2496 /******************************************************************
2497 * WDML_BroadcastDDEWindows
2501 void WDML_BroadcastDDEWindows(LPCWSTR clsName, UINT uMsg, WPARAM wParam, LPARAM lParam)
2503 struct tagWDML_BroadcastPmt s;
2505 s.clsName = clsName;
2509 EnumWindows(WDML_BroadcastEnumProc, (LPARAM)&s);