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, BOOL b16)
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->win16 = b16;
381 pInstance->nodeList = NULL; /* node will be added later */
382 pInstance->monitorFlags = afCmd & MF_MASK;
383 pInstance->wStatus = 0;
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, 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, FALSE);
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%d[%p] (%x %x %p %p %p %p %lx %lx)\n",
732 pInstance->win16 ? 16 : 32, pInstance->callback, uType, uFmt,
733 hConv, hsz1, hsz2, hdata, dwData1, dwData2);
734 if (pInstance->win16)
736 ret = WDML_InvokeCallback16(pInstance->callback, uType, uFmt, hConv,
737 hsz1, hsz2, hdata, dwData1, dwData2);
741 ret = pInstance->callback(uType, uFmt, hConv, hsz1, hsz2, hdata, dwData1, dwData2);
743 TRACE("done => %p\n", ret);
747 /*****************************************************************************
750 * generic routine to return a pointer to the relevant DDE_HANDLE_ENTRY
751 * for an instance Id, or NULL if the entry does not exist
754 WDML_INSTANCE* WDML_GetInstance(DWORD instId)
756 WDML_INSTANCE* pInstance;
758 EnterCriticalSection(&WDML_CritSect);
760 for (pInstance = WDML_InstanceList; pInstance != NULL; pInstance = pInstance->next)
762 if (pInstance->instanceID == instId)
764 if (GetCurrentThreadId() != pInstance->threadID)
766 FIXME("Tried to get instance from wrong thread\n");
773 LeaveCriticalSection(&WDML_CritSect);
776 WARN("Instance entry missing for id %04x\n", instId);
780 /******************************************************************
781 * WDML_GetInstanceFromWnd
785 WDML_INSTANCE* WDML_GetInstanceFromWnd(HWND hWnd)
787 return (WDML_INSTANCE*)GetWindowLongPtrW(hWnd, GWL_WDML_INSTANCE);
790 /******************************************************************************
791 * DdeGetLastError [USER32.@] Gets most recent error code
794 * idInst [I] Instance identifier
799 UINT WINAPI DdeGetLastError(DWORD idInst)
802 WDML_INSTANCE* pInstance;
804 /* First check instance
806 pInstance = WDML_GetInstance(idInst);
807 if (pInstance == NULL)
809 error_code = DMLERR_INVALIDPARAMETER;
813 error_code = pInstance->lastError;
814 pInstance->lastError = 0;
820 /******************************************************************
821 * WDML_SetAllLastError
825 static void WDML_SetAllLastError(DWORD lastError)
828 WDML_INSTANCE* pInstance;
829 threadID = GetCurrentThreadId();
830 pInstance = WDML_InstanceList;
833 if (pInstance->threadID == threadID)
834 pInstance->lastError = lastError;
835 pInstance = pInstance->next;
839 /* ================================================================
843 * ================================================================ */
846 /******************************************************************
851 static HSZNode* WDML_FindNode(WDML_INSTANCE* pInstance, HSZ hsz)
855 if (pInstance == NULL) return NULL;
857 for (pNode = pInstance->nodeList; pNode != NULL; pNode = pNode->next)
859 if (pNode->hsz == hsz) break;
861 if (!pNode) WARN("HSZ %p not found\n", hsz);
865 /******************************************************************
866 * WDML_MakeAtomFromHsz
868 * Creates a global atom from an existing HSZ
869 * Generally used before sending an HSZ as an atom to a remote app
871 ATOM WDML_MakeAtomFromHsz(HSZ hsz)
873 WCHAR nameBuffer[MAX_BUFFER_LEN];
875 if (GetAtomNameW(HSZ2ATOM(hsz), nameBuffer, MAX_BUFFER_LEN))
876 return GlobalAddAtomW(nameBuffer);
877 WARN("HSZ %p not found\n", hsz);
881 /******************************************************************
882 * WDML_MakeHszFromAtom
884 * Creates a HSZ from an existing global atom
885 * Generally used while receiving a global atom and transforming it
888 HSZ WDML_MakeHszFromAtom(const WDML_INSTANCE* pInstance, ATOM atom)
890 WCHAR nameBuffer[MAX_BUFFER_LEN];
892 if (!atom) return NULL;
894 if (GlobalGetAtomNameW(atom, nameBuffer, MAX_BUFFER_LEN))
896 TRACE("%x => %s\n", atom, debugstr_w(nameBuffer));
897 return DdeCreateStringHandleW(pInstance->instanceID, nameBuffer, CP_WINUNICODE);
899 WARN("ATOM 0x%x not found\n", atom);
903 /******************************************************************
908 BOOL WDML_IncHSZ(WDML_INSTANCE* pInstance, HSZ hsz)
912 pNode = WDML_FindNode(pInstance, hsz);
913 if (!pNode) return FALSE;
919 /******************************************************************************
920 * WDML_DecHSZ (INTERNAL)
922 * Decrease the ref count of an HSZ. If it reaches 0, the node is removed from the list
924 * Returns -1 is the HSZ isn't found, otherwise it's the current (after --) of the ref count
926 BOOL WDML_DecHSZ(WDML_INSTANCE* pInstance, HSZ hsz)
928 HSZNode* pPrev = NULL;
931 for (pCurrent = pInstance->nodeList; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
933 /* If we found the node we were looking for and its ref count is one,
936 if (pCurrent->hsz == hsz)
938 if (--pCurrent->refCount == 0)
940 if (pCurrent == pInstance->nodeList)
942 pInstance->nodeList = pCurrent->next;
946 pPrev->next = pCurrent->next;
948 HeapFree(GetProcessHeap(), 0, pCurrent);
949 DeleteAtom(HSZ2ATOM(hsz));
954 WARN("HSZ %p not found\n", hsz);
959 /******************************************************************************
960 * WDML_FreeAllHSZ (INTERNAL)
962 * Frees up all the strings still allocated in the list and
963 * remove all the nodes from the list of HSZ nodes.
965 void WDML_FreeAllHSZ(WDML_INSTANCE* pInstance)
967 /* Free any strings created in this instance.
969 while (pInstance->nodeList != NULL)
971 DdeFreeStringHandle(pInstance->instanceID, pInstance->nodeList->hsz);
975 /******************************************************************************
976 * InsertHSZNode (INTERNAL)
978 * Insert a node to the head of the list.
980 static void WDML_InsertHSZNode(WDML_INSTANCE* pInstance, HSZ hsz)
984 HSZNode* pNew = NULL;
985 /* Create a new node for this HSZ.
987 pNew = HeapAlloc(GetProcessHeap(), 0, sizeof(HSZNode));
991 pNew->next = pInstance->nodeList;
993 pInstance->nodeList = pNew;
997 ERR("Primary HSZ Node allocation failed - out of memory\n");
1002 /******************************************************************
1007 static int WDML_QueryString(WDML_INSTANCE* pInstance, HSZ hsz, LPVOID ptr, DWORD cchMax,
1010 WCHAR pString[MAX_BUFFER_LEN];
1012 /* If psz is null, we have to return only the length
1018 cchMax = MAX_BUFFER_LEN;
1021 /* if there is no input windows returns a NULL string */
1032 ret = GetAtomNameA(HSZ2ATOM(hsz), ptr, cchMax);
1035 ret = GetAtomNameW(HSZ2ATOM(hsz), ptr, cchMax);
1038 ERR("Unknown code page %d\n", codepage);
1044 /*****************************************************************
1045 * DdeQueryStringA [USER32.@]
1047 DWORD WINAPI DdeQueryStringA(DWORD idInst, HSZ hsz, LPSTR psz, DWORD cchMax, INT iCodePage)
1050 WDML_INSTANCE* pInstance;
1052 TRACE("(%d, %p, %p, %d, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
1054 /* First check instance
1056 pInstance = WDML_GetInstance(idInst);
1057 if (pInstance != NULL)
1059 if (iCodePage == 0) iCodePage = CP_WINANSI;
1060 ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
1063 TRACE("returning %d (%s)\n", ret, debugstr_a(psz));
1067 /*****************************************************************
1068 * DdeQueryStringW [USER32.@]
1071 DWORD WINAPI DdeQueryStringW(DWORD idInst, HSZ hsz, LPWSTR psz, DWORD cchMax, INT iCodePage)
1074 WDML_INSTANCE* pInstance;
1076 TRACE("(%d, %p, %p, %d, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
1078 /* First check instance
1080 pInstance = WDML_GetInstance(idInst);
1081 if (pInstance != NULL)
1083 if (iCodePage == 0) iCodePage = CP_WINUNICODE;
1084 ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
1087 TRACE("returning %d (%s)\n", ret, debugstr_w(psz));
1091 /******************************************************************
1096 static HSZ WDML_CreateString(WDML_INSTANCE* pInstance, LPCVOID ptr, int codepage)
1103 hsz = ATOM2HSZ(AddAtomA(ptr));
1104 TRACE("added atom %s with HSZ %p,\n", debugstr_a(ptr), hsz);
1107 hsz = ATOM2HSZ(AddAtomW(ptr));
1108 TRACE("added atom %s with HSZ %p,\n", debugstr_w(ptr), hsz);
1111 ERR("Unknown code page %d\n", codepage);
1114 WDML_InsertHSZNode(pInstance, hsz);
1118 /*****************************************************************
1119 * DdeCreateStringHandleA [USER32.@]
1121 * See DdeCreateStringHandleW.
1123 HSZ WINAPI DdeCreateStringHandleA(DWORD idInst, LPCSTR psz, INT codepage)
1126 WDML_INSTANCE* pInstance;
1128 TRACE("(%d,%s,%d)\n", idInst, debugstr_a(psz), codepage);
1130 pInstance = WDML_GetInstance(idInst);
1131 if (pInstance == NULL)
1132 WDML_SetAllLastError(DMLERR_INVALIDPARAMETER);
1135 if (codepage == 0) codepage = CP_WINANSI;
1136 hsz = WDML_CreateString(pInstance, psz, codepage);
1143 /******************************************************************************
1144 * DdeCreateStringHandleW [USER32.@] Creates handle to identify string
1147 * idInst [I] Instance identifier
1148 * psz [I] Pointer to string
1149 * codepage [I] Code page identifier
1151 * Success: String handle
1154 HSZ WINAPI DdeCreateStringHandleW(DWORD idInst, LPCWSTR psz, INT codepage)
1156 WDML_INSTANCE* pInstance;
1159 pInstance = WDML_GetInstance(idInst);
1160 if (pInstance == NULL)
1161 WDML_SetAllLastError(DMLERR_INVALIDPARAMETER);
1164 if (codepage == 0) codepage = CP_WINUNICODE;
1165 hsz = WDML_CreateString(pInstance, psz, codepage);
1171 /*****************************************************************
1172 * DdeFreeStringHandle (USER32.@)
1177 BOOL WINAPI DdeFreeStringHandle(DWORD idInst, HSZ hsz)
1179 WDML_INSTANCE* pInstance;
1182 TRACE("(%d,%p):\n", idInst, hsz);
1184 /* First check instance
1186 pInstance = WDML_GetInstance(idInst);
1188 ret = WDML_DecHSZ(pInstance, hsz);
1193 /*****************************************************************
1194 * DdeKeepStringHandle (USER32.@)
1200 BOOL WINAPI DdeKeepStringHandle(DWORD idInst, HSZ hsz)
1202 WDML_INSTANCE* pInstance;
1205 TRACE("(%d,%p):\n", idInst, hsz);
1207 /* First check instance
1209 pInstance = WDML_GetInstance(idInst);
1211 ret = WDML_IncHSZ(pInstance, hsz);
1216 /*****************************************************************
1217 * DdeCmpStringHandles (USER32.@)
1219 * Compares the value of two string handles. This comparison is
1220 * not case sensitive.
1223 * hsz1 [I] Handle to the first string
1224 * hsz2 [I] Handle to the second string
1227 * -1 The value of hsz1 is zero or less than hsz2
1228 * 0 The values of hsz 1 and 2 are the same or both zero.
1229 * 1 The value of hsz2 is zero of less than hsz1
1231 INT WINAPI DdeCmpStringHandles(HSZ hsz1, HSZ hsz2)
1233 WCHAR psz1[MAX_BUFFER_LEN];
1234 WCHAR psz2[MAX_BUFFER_LEN];
1238 ret1 = GetAtomNameW(HSZ2ATOM(hsz1), psz1, MAX_BUFFER_LEN);
1239 ret2 = GetAtomNameW(HSZ2ATOM(hsz2), psz2, MAX_BUFFER_LEN);
1241 TRACE("(%p<%s> %p<%s>);\n", hsz1, debugstr_w(psz1), hsz2, debugstr_w(psz2));
1243 /* Make sure we found both strings. */
1244 if (ret1 == 0 && ret2 == 0)
1246 /* If both are not found, return both "zero strings". */
1251 /* If hsz1 is a not found, return hsz1 is "zero string". */
1256 /* If hsz2 is a not found, return hsz2 is "zero string". */
1261 /* Compare the two strings we got (case insensitive). */
1262 ret = lstrcmpiW(psz1, psz2);
1263 /* Since strcmp returns any number smaller than
1264 * 0 when the first string is found to be less than
1265 * the second one we must make sure we are returning
1266 * the proper values.
1281 /* ================================================================
1283 * Data handle management
1285 * ================================================================ */
1287 /*****************************************************************
1288 * DdeCreateDataHandle (USER32.@)
1290 HDDEDATA WINAPI DdeCreateDataHandle(DWORD idInst, LPBYTE pSrc, DWORD cb, DWORD cbOff,
1291 HSZ hszItem, UINT wFmt, UINT afCmd)
1294 /* Other than check for validity we will ignore for now idInst, hszItem.
1295 * The purpose of these arguments still need to be investigated.
1298 WDML_INSTANCE* pInstance;
1301 DDE_DATAHANDLE_HEAD* pDdh;
1302 WCHAR psz[MAX_BUFFER_LEN];
1304 pInstance = WDML_GetInstance(idInst);
1305 if (pInstance == NULL)
1307 WDML_SetAllLastError(DMLERR_INVALIDPARAMETER);
1311 if (!GetAtomNameW(HSZ2ATOM(hszItem), psz, MAX_BUFFER_LEN))
1313 psz[0] = HSZ2ATOM(hszItem);
1317 TRACE("(%d,%p,cb %d, cbOff %d,%p <%s>,fmt %04x,%x)\n",
1318 idInst, pSrc, cb, cbOff, hszItem, debugstr_w(psz), wFmt, afCmd);
1320 if (afCmd != 0 && afCmd != HDATA_APPOWNED)
1323 /* we use the first 4 bytes to store the size */
1324 if (!(hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, cb + cbOff + sizeof(DDE_DATAHANDLE_HEAD))))
1326 ERR("GlobalAlloc failed\n");
1330 pDdh = GlobalLock(hMem);
1337 pDdh->cfFormat = wFmt;
1338 pDdh->bAppOwned = (afCmd == HDATA_APPOWNED);
1340 pByte = (LPBYTE)(pDdh + 1);
1343 memcpy(pByte, pSrc + cbOff, cb);
1347 TRACE("=> %p\n", hMem);
1351 /*****************************************************************
1353 * DdeAddData (USER32.@)
1355 HDDEDATA WINAPI DdeAddData(HDDEDATA hData, LPBYTE pSrc, DWORD cb, DWORD cbOff)
1357 DWORD old_sz, new_sz;
1360 TRACE("(%p,%p,cb %d, cbOff %d)\n", hData, pSrc, cb, cbOff);
1362 pDst = DdeAccessData(hData, &old_sz);
1363 if (!pDst) return 0;
1365 new_sz = cb + cbOff;
1366 if (new_sz > old_sz)
1368 DdeUnaccessData(hData);
1369 hData = GlobalReAlloc(hData, new_sz + sizeof(DDE_DATAHANDLE_HEAD),
1370 GMEM_MOVEABLE | GMEM_DDESHARE);
1371 pDst = DdeAccessData(hData, &old_sz);
1374 if (!pDst) return 0;
1376 memcpy(pDst + cbOff, pSrc, cb);
1377 DdeUnaccessData(hData);
1381 /******************************************************************************
1382 * DdeGetData [USER32.@] Copies data from DDE object to local buffer
1386 * hData [I] Handle to DDE object
1387 * pDst [I] Pointer to destination buffer
1388 * cbMax [I] Amount of data to copy
1389 * cbOff [I] Offset to beginning of data
1392 * Size of memory object associated with handle
1394 DWORD WINAPI DdeGetData(HDDEDATA hData, LPBYTE pDst, DWORD cbMax, DWORD cbOff)
1396 DWORD dwSize, dwRet;
1399 TRACE("(%p,%p,%d,%d)\n", hData, pDst, cbMax, cbOff);
1401 pByte = DdeAccessData(hData, &dwSize);
1409 else if (cbOff + cbMax < dwSize)
1413 else if (cbOff < dwSize)
1415 dwRet = dwSize - cbOff;
1421 if (pDst && dwRet != 0)
1423 memcpy(pDst, pByte + cbOff, dwRet);
1425 DdeUnaccessData(hData);
1434 /*****************************************************************
1435 * DdeAccessData (USER32.@)
1437 LPBYTE WINAPI DdeAccessData(HDDEDATA hData, LPDWORD pcbDataSize)
1439 HGLOBAL hMem = hData;
1440 DDE_DATAHANDLE_HEAD* pDdh;
1442 TRACE("(%p,%p)\n", hData, pcbDataSize);
1444 pDdh = GlobalLock(hMem);
1447 ERR("Failed on GlobalLock(%p)\n", hMem);
1451 if (pcbDataSize != NULL)
1453 *pcbDataSize = GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD);
1455 TRACE("=> %p (%lu) fmt %04x\n", pDdh + 1, GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD), pDdh->cfFormat);
1456 return (LPBYTE)(pDdh + 1);
1459 /*****************************************************************
1460 * DdeUnaccessData (USER32.@)
1462 BOOL WINAPI DdeUnaccessData(HDDEDATA hData)
1464 HGLOBAL hMem = hData;
1466 TRACE("(%p)\n", hData);
1473 /*****************************************************************
1474 * DdeFreeDataHandle (USER32.@)
1476 BOOL WINAPI DdeFreeDataHandle(HDDEDATA hData)
1478 TRACE("(%p)\n", hData);
1479 return GlobalFree(hData) == 0;
1482 /******************************************************************
1487 BOOL WDML_IsAppOwned(HDDEDATA hData)
1489 DDE_DATAHANDLE_HEAD* pDdh;
1492 pDdh = GlobalLock(hData);
1495 ret = pDdh->bAppOwned;
1496 GlobalUnlock(hData);
1501 /* ================================================================
1503 * Global <=> Data handle management
1505 * ================================================================ */
1507 /* Note: we use a DDEDATA, but layout of DDEDATA, DDEADVISE and DDEPOKE structures is similar:
1509 * (bytes) (bits) comment
1510 * 0 16 bit fields for options (release, ackreq, response...)
1511 * 2 16 clipboard format
1512 * 4 ? data to be used
1514 HDDEDATA WDML_Global2DataHandle(WDML_CONV* pConv, HGLOBAL hMem, WINE_DDEHEAD* p)
1522 pDd = GlobalLock(hMem);
1523 size = GlobalSize(hMem) - sizeof(WINE_DDEHEAD);
1526 if (p) memcpy(p, pDd, sizeof(WINE_DDEHEAD));
1527 switch (pDd->cfFormat)
1530 FIXME("Unsupported format (%04x) for data %p, passing raw information\n",
1531 pDd->cfFormat, hMem);
1535 ret = DdeCreateDataHandle(pConv->instance->instanceID, pDd->Value, size, 0, 0, pDd->cfFormat, 0);
1538 if (size >= sizeof(BITMAP))
1540 BITMAP* bmp = (BITMAP*)pDd->Value;
1541 int count = bmp->bmWidthBytes * bmp->bmHeight * bmp->bmPlanes;
1542 if (size >= sizeof(BITMAP) + count)
1546 if ((hbmp = CreateBitmap(bmp->bmWidth, bmp->bmHeight,
1547 bmp->bmPlanes, bmp->bmBitsPixel,
1548 pDd->Value + sizeof(BITMAP))))
1550 ret = DdeCreateDataHandle(pConv->instance->instanceID, (LPBYTE)&hbmp, sizeof(hbmp),
1551 0, 0, CF_BITMAP, 0);
1553 else ERR("Can't create bmp\n");
1557 ERR("Wrong count: %u / %d\n", size, count);
1559 } else ERR("No bitmap header\n");
1568 /******************************************************************
1569 * WDML_DataHandle2Global
1573 HGLOBAL WDML_DataHandle2Global(HDDEDATA hDdeData, BOOL fResponse, BOOL fRelease,
1574 BOOL fDeferUpd, BOOL fAckReq)
1576 DDE_DATAHANDLE_HEAD* pDdh;
1580 dwSize = GlobalSize(hDdeData) - sizeof(DDE_DATAHANDLE_HEAD);
1581 pDdh = GlobalLock(hDdeData);
1584 WINE_DDEHEAD* wdh = NULL;
1586 switch (pDdh->cfFormat)
1589 FIXME("Unsupported format (%04x) for data %p, passing raw information\n",
1590 pDdh->cfFormat, hDdeData);
1594 hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, sizeof(WINE_DDEHEAD) + dwSize);
1595 if (hMem && (wdh = GlobalLock(hMem)))
1597 memcpy(wdh + 1, pDdh + 1, dwSize);
1601 if (dwSize >= sizeof(HBITMAP))
1605 HBITMAP hbmp = *(HBITMAP*)(pDdh + 1);
1607 if (GetObjectW(hbmp, sizeof(bmp), &bmp))
1609 count = bmp.bmWidthBytes * bmp.bmHeight;
1610 hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE,
1611 sizeof(WINE_DDEHEAD) + sizeof(bmp) + count);
1612 if (hMem && (wdh = GlobalLock(hMem)))
1614 memcpy(wdh + 1, &bmp, sizeof(bmp));
1615 GetBitmapBits(hbmp, count, ((char*)(wdh + 1)) + sizeof(bmp));
1624 wdh->fResponse = fResponse;
1625 wdh->fRelease = fRelease;
1626 wdh->fDeferUpd = fDeferUpd;
1627 wdh->fAckReq = fAckReq;
1628 wdh->cfFormat = pDdh->cfFormat;
1631 GlobalUnlock(hDdeData);
1637 /* ================================================================
1641 * ================================================================ */
1643 /******************************************************************
1648 WDML_SERVER* WDML_AddServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1650 static const WCHAR fmtW[] = {'%','s','(','0','x','%','0','8','l','x',')',0};
1651 WDML_SERVER* pServer;
1655 pServer = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_SERVER));
1656 if (pServer == NULL) return NULL;
1658 pServer->hszService = hszService;
1659 WDML_IncHSZ(pInstance, hszService);
1661 DdeQueryStringW(pInstance->instanceID, hszService, buf1, 256, CP_WINUNICODE);
1662 snprintfW(buf2, 256, fmtW, buf1, GetCurrentProcessId());
1663 pServer->hszServiceSpec = DdeCreateStringHandleW(pInstance->instanceID, buf2, CP_WINUNICODE);
1665 pServer->atomService = WDML_MakeAtomFromHsz(pServer->hszService);
1666 pServer->atomServiceSpec = WDML_MakeAtomFromHsz(pServer->hszServiceSpec);
1668 pServer->filterOn = TRUE;
1670 pServer->next = pInstance->servers;
1671 pInstance->servers = pServer;
1675 /******************************************************************
1680 void WDML_RemoveServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1682 WDML_SERVER* pPrev = NULL;
1683 WDML_SERVER* pServer = NULL;
1685 WDML_CONV* pConvNext;
1687 pServer = pInstance->servers;
1689 while (pServer != NULL)
1691 if (DdeCmpStringHandles(pServer->hszService, hszService) == 0)
1693 WDML_BroadcastDDEWindows(WDML_szEventClass, WM_WDML_UNREGISTER,
1694 pServer->atomService, pServer->atomServiceSpec);
1695 /* terminate all conversations for given topic */
1696 for (pConv = pInstance->convs[WDML_SERVER_SIDE]; pConv != NULL; pConv = pConvNext)
1698 pConvNext = pConv->next;
1699 if (DdeCmpStringHandles(pConv->hszService, hszService) == 0)
1701 HWND client = pConv->hwndClient, server = pConv->hwndServer;
1702 WDML_RemoveConv(pConv, WDML_SERVER_SIDE);
1703 /* don't care about return code (whether client window is present or not) */
1704 PostMessageW(client, WM_DDE_TERMINATE, (WPARAM)server, 0);
1707 if (pServer == pInstance->servers)
1709 pInstance->servers = pServer->next;
1713 pPrev->next = pServer->next;
1716 DestroyWindow(pServer->hwndServer);
1717 WDML_DecHSZ(pInstance, pServer->hszServiceSpec);
1718 WDML_DecHSZ(pInstance, pServer->hszService);
1720 GlobalDeleteAtom(pServer->atomService);
1721 GlobalDeleteAtom(pServer->atomServiceSpec);
1723 HeapFree(GetProcessHeap(), 0, pServer);
1728 pServer = pServer->next;
1732 /*****************************************************************************
1735 * generic routine to return a pointer to the relevant ServiceNode
1736 * for a given service name, or NULL if the entry does not exist
1739 WDML_SERVER* WDML_FindServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1741 WDML_SERVER* pServer;
1743 for (pServer = pInstance->servers; pServer != NULL; pServer = pServer->next)
1745 if (hszService == pServer->hszService)
1750 TRACE("Service name missing\n");
1754 /* ================================================================
1756 * Conversation management
1758 * ================================================================ */
1760 /******************************************************************
1765 WDML_CONV* WDML_AddConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
1766 HSZ hszService, HSZ hszTopic, HWND hwndClient, HWND hwndServer)
1770 /* no conversation yet, add it */
1771 pConv = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_CONV));
1772 if (!pConv) return NULL;
1774 pConv->instance = pInstance;
1775 WDML_IncHSZ(pInstance, pConv->hszService = hszService);
1776 WDML_IncHSZ(pInstance, pConv->hszTopic = hszTopic);
1777 pConv->magic = WDML_CONV_MAGIC;
1778 pConv->hwndServer = hwndServer;
1779 pConv->hwndClient = hwndClient;
1780 pConv->transactions = NULL;
1782 pConv->wStatus = (side == WDML_CLIENT_SIDE) ? ST_CLIENT : 0L;
1783 pConv->wStatus |= pInstance->wStatus;
1784 /* check if both side of the conversation are of the same instance */
1785 if (GetWindowThreadProcessId(hwndClient, NULL) == GetWindowThreadProcessId(hwndServer, NULL) &&
1786 WDML_GetInstanceFromWnd(hwndClient) == WDML_GetInstanceFromWnd(hwndServer))
1788 pConv->wStatus |= ST_ISSELF;
1790 pConv->wConvst = XST_NULL;
1792 pConv->next = pInstance->convs[side];
1793 pInstance->convs[side] = pConv;
1795 TRACE("pConv->wStatus %04x pInstance(%p)\n", pConv->wStatus, pInstance);
1800 /******************************************************************
1805 WDML_CONV* WDML_FindConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
1806 HSZ hszService, HSZ hszTopic)
1808 WDML_CONV* pCurrent = NULL;
1810 for (pCurrent = pInstance->convs[side]; pCurrent != NULL; pCurrent = pCurrent->next)
1812 if (DdeCmpStringHandles(pCurrent->hszService, hszService) == 0 &&
1813 DdeCmpStringHandles(pCurrent->hszTopic, hszTopic) == 0)
1822 /******************************************************************
1827 void WDML_RemoveConv(WDML_CONV* pRef, WDML_SIDE side)
1829 WDML_CONV* pPrev = NULL;
1830 WDML_CONV* pCurrent;
1832 WDML_XACT* pXActNext;
1838 /* remove any pending transaction */
1839 for (pXAct = pRef->transactions; pXAct != NULL; pXAct = pXActNext)
1841 pXActNext = pXAct->next;
1842 WDML_FreeTransaction(pRef->instance, pXAct, TRUE);
1845 WDML_RemoveAllLinks(pRef->instance, pRef, side);
1847 /* FIXME: should we keep the window around ? it seems so (at least on client side
1848 * to let QueryConvInfo work after conv termination, but also to implement
1851 /* destroy conversation window, but first remove pConv from hWnd.
1852 * this would help the wndProc do appropriate handling upon a WM_DESTROY message
1854 hWnd = (side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer;
1855 SetWindowLongPtrW(hWnd, GWL_WDML_CONVERSATION, 0);
1857 DestroyWindow((side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer);
1859 WDML_DecHSZ(pRef->instance, pRef->hszService);
1860 WDML_DecHSZ(pRef->instance, pRef->hszTopic);
1862 for (pCurrent = pRef->instance->convs[side]; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
1864 if (pCurrent == pRef)
1866 if (pCurrent == pRef->instance->convs[side])
1868 pRef->instance->convs[side] = pCurrent->next;
1872 pPrev->next = pCurrent->next;
1874 pCurrent->magic = 0;
1875 HeapFree(GetProcessHeap(), 0, pCurrent);
1881 /******************************************************************
1882 * WDML_EnableCallback
1884 static BOOL WDML_EnableCallback(WDML_CONV *pConv, UINT wCmd)
1886 if (wCmd == EC_DISABLE)
1888 pConv->wStatus |= ST_BLOCKED;
1889 TRACE("EC_DISABLE: conv %p status flags %04x\n", pConv, pConv->wStatus);
1893 if (wCmd == EC_QUERYWAITING)
1894 return pConv->transactions ? TRUE : FALSE;
1896 if (wCmd != EC_ENABLEALL && wCmd != EC_ENABLEONE)
1898 FIXME("Unknown command code %04x\n", wCmd);
1902 if (wCmd == EC_ENABLEALL)
1904 pConv->wStatus &= ~ST_BLOCKED;
1905 TRACE("EC_ENABLEALL: conv %p status flags %04x\n", pConv, pConv->wStatus);
1908 while (pConv->transactions)
1910 WDML_XACT *pXAct = pConv->transactions;
1912 if (pConv->wStatus & ST_CLIENT)
1914 /* transaction should be in the queue until handled */
1915 WDML_ClientHandle(pConv, pXAct, 0, NULL);
1916 WDML_UnQueueTransaction(pConv, pXAct);
1920 /* transaction should be removed from the queue before handling */
1921 WDML_UnQueueTransaction(pConv, pXAct);
1922 WDML_ServerHandle(pConv, pXAct);
1925 WDML_FreeTransaction(pConv->instance, pXAct, TRUE);
1927 if (wCmd == EC_ENABLEONE) break;
1932 /*****************************************************************
1933 * DdeEnableCallback (USER32.@)
1935 BOOL WINAPI DdeEnableCallback(DWORD idInst, HCONV hConv, UINT wCmd)
1940 TRACE("(%d, %p, %04x)\n", idInst, hConv, wCmd);
1944 pConv = WDML_GetConv(hConv, TRUE);
1946 if (pConv && pConv->instance->instanceID == idInst)
1947 ret = WDML_EnableCallback(pConv, wCmd);
1951 WDML_INSTANCE *pInstance = WDML_GetInstance(idInst);
1956 TRACE("adding flags %04x to instance %p\n", wCmd, pInstance);
1957 pInstance->wStatus |= wCmd;
1959 if (wCmd == EC_DISABLE)
1961 pInstance->wStatus |= ST_BLOCKED;
1962 TRACE("EC_DISABLE: inst %p status flags %04x\n", pInstance, pInstance->wStatus);
1964 else if (wCmd == EC_ENABLEALL)
1966 pInstance->wStatus &= ~ST_BLOCKED;
1967 TRACE("EC_ENABLEALL: inst %p status flags %04x\n", pInstance, pInstance->wStatus);
1972 for (pConv = pInstance->convs[WDML_CLIENT_SIDE]; pConv != NULL; pConv = pConv->next)
1974 ret = WDML_EnableCallback(pConv, wCmd);
1975 if (ret && wCmd == EC_QUERYWAITING) break;
1982 /******************************************************************
1987 WDML_CONV* WDML_GetConv(HCONV hConv, BOOL checkConnected)
1989 WDML_CONV* pConv = (WDML_CONV*)hConv;
1991 /* FIXME: should do better checking */
1992 if (pConv == NULL || pConv->magic != WDML_CONV_MAGIC) return NULL;
1994 if (!pConv->instance || pConv->instance->threadID != GetCurrentThreadId())
1996 WARN("wrong thread ID\n");
1997 pConv->instance->lastError = DMLERR_INVALIDPARAMETER; /* FIXME: check */
2001 if (checkConnected && !(pConv->wStatus & ST_CONNECTED))
2003 WARN("found conv but ain't connected\n");
2004 pConv->instance->lastError = DMLERR_NO_CONV_ESTABLISHED;
2011 /******************************************************************
2012 * WDML_GetConvFromWnd
2016 WDML_CONV* WDML_GetConvFromWnd(HWND hWnd)
2018 return (WDML_CONV*)GetWindowLongPtrW(hWnd, GWL_WDML_CONVERSATION);
2021 /******************************************************************
2026 BOOL WDML_PostAck(WDML_CONV* pConv, WDML_SIDE side, WORD appRetCode,
2027 BOOL fBusy, BOOL fAck, UINT_PTR pmt, LPARAM lParam, UINT oldMsg)
2032 if (side == WDML_SERVER_SIDE)
2034 from = pConv->hwndServer;
2035 to = pConv->hwndClient;
2039 to = pConv->hwndServer;
2040 from = pConv->hwndClient;
2043 ddeAck.bAppReturnCode = appRetCode;
2044 ddeAck.reserved = 0;
2045 ddeAck.fBusy = fBusy;
2048 TRACE("Posting a %s ack\n", ddeAck.fAck ? "positive" : "negative");
2050 lParam = (lParam) ? ReuseDDElParam(lParam, oldMsg, WM_DDE_ACK, *(WORD*)&ddeAck, pmt) :
2051 PackDDElParam(WM_DDE_ACK, *(WORD*)&ddeAck, pmt);
2052 if (!PostMessageW(to, WM_DDE_ACK, (WPARAM)from, lParam))
2054 pConv->wStatus &= ~ST_CONNECTED;
2055 pConv->instance->lastError = DMLERR_POSTMSG_FAILED;
2056 FreeDDElParam(WM_DDE_ACK, lParam);
2062 /*****************************************************************
2063 * DdeSetUserHandle (USER32.@)
2065 BOOL WINAPI DdeSetUserHandle(HCONV hConv, DWORD id, DWORD hUser)
2069 pConv = WDML_GetConv(hConv, FALSE);
2075 pConv->hUser = hUser;
2081 pXAct = WDML_FindTransaction(pConv, id);
2084 pXAct->hUser = hUser;
2088 pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
2095 /******************************************************************
2096 * WDML_GetLocalConvInfo
2100 static BOOL WDML_GetLocalConvInfo(WDML_CONV* pConv, CONVINFO* ci, DWORD id)
2106 ci->hConvPartner = (pConv->wStatus & ST_ISLOCAL) ? (HCONV)((ULONG_PTR)pConv | 1) : 0;
2107 ci->hszSvcPartner = pConv->hszService;
2108 ci->hszServiceReq = pConv->hszService; /* FIXME: they shouldn't be the same, should they ? */
2109 ci->hszTopic = pConv->hszTopic;
2110 ci->wStatus = pConv->wStatus;
2112 side = (pConv->wStatus & ST_CLIENT) ? WDML_CLIENT_SIDE : WDML_SERVER_SIDE;
2114 for (pLink = pConv->instance->links[side]; pLink != NULL; pLink = pLink->next)
2116 if (pLink->hConv == (HCONV)pConv)
2118 ci->wStatus |= ST_ADVISE;
2123 /* FIXME: non handled status flags:
2129 ci->wConvst = pConv->wConvst; /* FIXME */
2131 ci->wLastError = 0; /* FIXME: note it's not the instance last error */
2133 ci->ConvCtxt = pConv->convContext;
2134 if (ci->wStatus & ST_CLIENT)
2136 ci->hwnd = pConv->hwndClient;
2137 ci->hwndPartner = pConv->hwndServer;
2141 ci->hwnd = pConv->hwndServer;
2142 ci->hwndPartner = pConv->hwndClient;
2146 ci->hUser = pConv->hUser;
2155 pXAct = WDML_FindTransaction(pConv, id);
2158 ci->hUser = pXAct->hUser;
2159 ci->hszItem = pXAct->hszItem;
2160 ci->wFmt = pXAct->wFmt;
2161 ci->wType = pXAct->wType;
2166 pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
2172 /******************************************************************
2173 * DdeQueryConvInfo (USER32.@)
2175 * FIXME: Set last DDE error on failure.
2177 UINT WINAPI DdeQueryConvInfo(HCONV hConv, DWORD id, PCONVINFO lpConvInfo)
2179 UINT ret = lpConvInfo->cb;
2183 TRACE("(%p,%x,%p)\n", hConv, id, lpConvInfo);
2187 FIXME("hConv is NULL\n");
2191 pConv = WDML_GetConv(hConv, FALSE);
2194 if (!WDML_GetLocalConvInfo(pConv, &ci, id))
2199 if ((ULONG_PTR)hConv & 1)
2201 pConv = WDML_GetConv((HCONV)((ULONG_PTR)hConv & ~1), FALSE);
2203 FIXME("Request on remote conversation information is not implemented yet\n");
2209 memcpy(lpConvInfo, &ci, min((size_t)lpConvInfo->cb, sizeof(ci)));
2213 /* ================================================================
2215 * Link (hot & warm) management
2217 * ================================================================ */
2219 /******************************************************************
2224 void WDML_AddLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2225 UINT wType, HSZ hszItem, UINT wFmt)
2229 pLink = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_LINK));
2236 pLink->hConv = hConv;
2237 pLink->transactionType = wType;
2238 WDML_IncHSZ(pInstance, pLink->hszItem = hszItem);
2240 pLink->next = pInstance->links[side];
2241 pInstance->links[side] = pLink;
2244 /******************************************************************
2249 void WDML_RemoveLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2250 HSZ hszItem, UINT uFmt)
2252 WDML_LINK* pPrev = NULL;
2253 WDML_LINK* pCurrent = NULL;
2255 pCurrent = pInstance->links[side];
2257 while (pCurrent != NULL)
2259 if (pCurrent->hConv == hConv &&
2260 DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
2261 pCurrent->uFmt == uFmt)
2263 if (pCurrent == pInstance->links[side])
2265 pInstance->links[side] = pCurrent->next;
2269 pPrev->next = pCurrent->next;
2272 WDML_DecHSZ(pInstance, pCurrent->hszItem);
2273 HeapFree(GetProcessHeap(), 0, pCurrent);
2278 pCurrent = pCurrent->next;
2282 /* this function is called to remove all links related to the conv.
2283 It should be called from both client and server when terminating
2286 /******************************************************************
2287 * WDML_RemoveAllLinks
2291 void WDML_RemoveAllLinks(WDML_INSTANCE* pInstance, WDML_CONV* pConv, WDML_SIDE side)
2293 WDML_LINK* pPrev = NULL;
2294 WDML_LINK* pCurrent = NULL;
2295 WDML_LINK* pNext = NULL;
2297 pCurrent = pInstance->links[side];
2299 while (pCurrent != NULL)
2301 if (pCurrent->hConv == (HCONV)pConv)
2303 if (pCurrent == pInstance->links[side])
2305 pInstance->links[side] = pCurrent->next;
2306 pNext = pCurrent->next;
2310 pPrev->next = pCurrent->next;
2311 pNext = pCurrent->next;
2314 WDML_DecHSZ(pInstance, pCurrent->hszItem);
2316 HeapFree(GetProcessHeap(), 0, pCurrent);
2323 pCurrent = pCurrent->next;
2332 /******************************************************************
2337 WDML_LINK* WDML_FindLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2338 HSZ hszItem, BOOL use_fmt, UINT uFmt)
2340 WDML_LINK* pCurrent = NULL;
2342 for (pCurrent = pInstance->links[side]; pCurrent != NULL; pCurrent = pCurrent->next)
2344 /* we don't need to check for transaction type as it can be altered */
2346 if (pCurrent->hConv == hConv &&
2347 DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
2348 (!use_fmt || pCurrent->uFmt == uFmt))
2358 /* ================================================================
2360 * Transaction management
2362 * ================================================================ */
2364 /******************************************************************
2365 * WDML_AllocTransaction
2367 * Alloc a transaction structure for handling the message ddeMsg
2369 WDML_XACT* WDML_AllocTransaction(WDML_INSTANCE* pInstance, UINT ddeMsg,
2370 UINT wFmt, HSZ hszItem)
2373 static WORD tid = 1; /* FIXME: wrap around */
2375 pXAct = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_XACT));
2378 pInstance->lastError = DMLERR_MEMORY_ERROR;
2382 pXAct->xActID = tid++;
2383 pXAct->ddeMsg = ddeMsg;
2384 pXAct->hDdeData = 0;
2389 if ((pXAct->hszItem = hszItem)) WDML_IncHSZ(pInstance, pXAct->hszItem);
2397 /******************************************************************
2398 * WDML_QueueTransaction
2400 * Adds a transaction to the list of transaction
2402 void WDML_QueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
2406 /* advance to last in queue */
2407 for (pt = &pConv->transactions; *pt != NULL; pt = &(*pt)->next);
2411 /******************************************************************
2412 * WDML_UnQueueTransaction
2416 BOOL WDML_UnQueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
2420 for (pt = &pConv->transactions; *pt; pt = &(*pt)->next)
2431 /******************************************************************
2432 * WDML_FreeTransaction
2436 void WDML_FreeTransaction(WDML_INSTANCE* pInstance, WDML_XACT* pXAct, BOOL doFreePmt)
2438 /* free pmt(s) in pXAct too. check against one for not deleting TRUE return values */
2439 if (doFreePmt && (ULONG_PTR)pXAct->hMem > 1)
2441 GlobalFree(pXAct->hMem);
2443 if (pXAct->hszItem) WDML_DecHSZ(pInstance, pXAct->hszItem);
2445 HeapFree(GetProcessHeap(), 0, pXAct);
2448 /******************************************************************
2449 * WDML_FindTransaction
2453 WDML_XACT* WDML_FindTransaction(WDML_CONV* pConv, DWORD tid)
2458 for (pXAct = pConv->transactions; pXAct; pXAct = pXAct->next)
2460 if (pXAct->xActID == tid)
2466 /* ================================================================
2468 * Information broadcast across DDEML implementations
2470 * ================================================================ */
2472 struct tagWDML_BroadcastPmt
2480 /******************************************************************
2481 * WDML_BroadcastEnumProc
2485 static BOOL CALLBACK WDML_BroadcastEnumProc(HWND hWnd, LPARAM lParam)
2487 struct tagWDML_BroadcastPmt* s = (struct tagWDML_BroadcastPmt*)lParam;
2490 if (GetClassNameW(hWnd, buffer, 128) > 0 &&
2491 lstrcmpiW(buffer, s->clsName) == 0)
2493 PostMessageW(hWnd, s->uMsg, s->wParam, s->lParam);
2498 /******************************************************************
2499 * WDML_BroadcastDDEWindows
2503 void WDML_BroadcastDDEWindows(LPCWSTR clsName, UINT uMsg, WPARAM wParam, LPARAM lParam)
2505 struct tagWDML_BroadcastPmt s;
2507 s.clsName = clsName;
2511 EnumWindows(WDML_BroadcastEnumProc, (LPARAM)&s);