1 /* -*- tab-width: 8; c-basic-offset: 4 -*- */
6 * Copyright 1997 Alexandre Julliard
7 * Copyright 1997 Len White
8 * Copyright 1999 Keith Matthews
10 * Copyright 2001 Eric Pouech
12 * This library is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU Lesser General Public
14 * License as published by the Free Software Foundation; either
15 * version 2.1 of the License, or (at your option) any later version.
17 * This library is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * Lesser General Public License for more details.
22 * You should have received a copy of the GNU Lesser General Public
23 * License along with this library; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 #include "wine/port.h"
41 #include "wine/debug.h"
42 #include "dde/dde_private.h"
44 WINE_DEFAULT_DEBUG_CHANNEL(ddeml);
46 /* convert between ATOM and HSZ avoiding compiler warnings */
47 #define ATOM2HSZ(atom) ((HSZ) (ULONG_PTR)(atom))
48 #define HSZ2ATOM(hsz) ((ATOM) (ULONG_PTR)(hsz))
50 static WDML_INSTANCE* WDML_InstanceList = NULL;
51 static DWORD WDML_MaxInstanceID = 0; /* OK for present, have to worry about wrap-around later */
52 const char WDML_szEventClass[] = "DdeEventClass";
54 static CRITICAL_SECTION_DEBUG critsect_debug =
57 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
58 0, 0, { 0, (DWORD)(__FILE__ ": WDML_CritSect") }
60 CRITICAL_SECTION WDML_CritSect = { &critsect_debug, -1, 0, 0, 0, 0 };
62 /* ================================================================
64 * Pure DDE (non DDEML) management
66 * ================================================================ */
69 /*****************************************************************
70 * PackDDElParam (USER32.@)
75 LPARAM WINAPI PackDDElParam(UINT msg, UINT_PTR uiLo, UINT_PTR uiHi)
86 if (!(hMem = GlobalAlloc(GMEM_DDESHARE, sizeof(UINT_PTR) * 2)))
88 ERR("GlobalAlloc failed\n");
91 if (!(params = GlobalLock(hMem)))
93 ERR("GlobalLock failed (%p)\n", hMem);
105 return MAKELPARAM(uiLo, uiHi);
110 /*****************************************************************
111 * UnpackDDElParam (USER32.@)
117 BOOL WINAPI UnpackDDElParam(UINT msg, LPARAM lParam,
118 PUINT_PTR uiLo, PUINT_PTR uiHi)
128 if (!lParam) return FALSE;
129 if (!(params = GlobalLock( (HGLOBAL)lParam )))
131 ERR("GlobalLock failed (%lx)\n", lParam);
134 TRACE("unpacked: low %08x, high %08x\n", params[0], params[1]);
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 %08x %08x\n", uiLo, uiHi);
210 GlobalLock( (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 %ld 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 DefWindowProcA(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 WNDCLASSEXA wndclass;
351 TRACE("(%p,%p,0x%lx,%ld)\n",
352 pidInst, pfnCallback, afCmd, ulRes);
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 = (WDML_INSTANCE*)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->servers = NULL;
384 pInstance->convs[0] = NULL;
385 pInstance->convs[1] = NULL;
386 pInstance->links[0] = NULL;
387 pInstance->links[1] = NULL;
389 /* isolate CBF flags in one go, expect this will go the way of all attempts to be clever !! */
391 pInstance->CBFflags = afCmd^((afCmd&MF_MASK)|((afCmd&APPCMD_MASK)|(afCmd&APPCLASS_MASK)));
393 if (!pInstance->clientOnly)
395 /* Check for other way of setting Client-only !! */
396 pInstance->clientOnly =
397 (pInstance->CBFflags & CBF_FAIL_ALLSVRXACTIONS) == CBF_FAIL_ALLSVRXACTIONS;
400 TRACE("instance created - checking validity \n");
404 /* Initialisation of new Instance Identifier */
405 TRACE("new instance, callback %p flags %lX\n",pfnCallback,afCmd);
407 EnterCriticalSection(&WDML_CritSect);
409 if (WDML_InstanceList == NULL)
411 /* can't be another instance in this case, assign to the base pointer */
412 WDML_InstanceList = pInstance;
414 /* since first must force filter of XTYP_CONNECT and XTYP_WILDCONNECT for
416 * ------------------------------- NOTE NOTE NOTE --------------------------
418 * the manual is not clear if this condition
419 * applies to the first call to DdeInitialize from an application, or the
420 * first call for a given callback !!!
423 pInstance->CBFflags = pInstance->CBFflags|APPCMD_FILTERINITS;
424 TRACE("First application instance detected OK\n");
425 /* allocate new instance ID */
426 WDML_IncrementInstanceId(pInstance);
430 /* really need to chain the new one in to the latest here, but after checking conditions
431 * such as trying to start a conversation from an application trying to monitor */
432 reference_inst = WDML_InstanceList;
433 TRACE("Subsequent application instance - starting checks\n");
434 while (reference_inst->next != NULL)
437 * This set of tests will work if application uses same instance Id
438 * at application level once allocated - which is what manual implies
439 * should happen. If someone tries to be
440 * clever (lazy ?) it will fail to pick up that later calls are for
441 * the same application - should we trust them ?
443 if (pInstance->instanceID == reference_inst->instanceID)
445 /* Check 1 - must be same Client-only state */
447 if (pInstance->clientOnly != reference_inst->clientOnly)
449 ret = DMLERR_DLL_USAGE;
453 /* Check 2 - cannot use 'Monitor' with any non-monitor modes */
455 if (pInstance->monitor != reference_inst->monitor)
457 ret = DMLERR_INVALIDPARAMETER;
461 /* Check 3 - must supply different callback address */
463 if (pInstance->callback == reference_inst->callback)
465 ret = DMLERR_DLL_USAGE;
469 reference_inst = reference_inst->next;
471 /* All cleared, add to chain */
473 TRACE("Application Instance checks finished\n");
474 WDML_IncrementInstanceId(pInstance);
475 reference_inst->next = pInstance;
477 LeaveCriticalSection(&WDML_CritSect);
479 *pidInst = pInstance->instanceID;
481 /* for deadlock issues, windows must always be created when outside the critical section */
482 wndclass.cbSize = sizeof(wndclass);
484 wndclass.lpfnWndProc = WDML_EventProc;
485 wndclass.cbClsExtra = 0;
486 wndclass.cbWndExtra = sizeof(DWORD);
487 wndclass.hInstance = 0;
489 wndclass.hCursor = 0;
490 wndclass.hbrBackground = 0;
491 wndclass.lpszMenuName = NULL;
492 wndclass.lpszClassName = WDML_szEventClass;
493 wndclass.hIconSm = 0;
495 RegisterClassExA(&wndclass);
497 pInstance->hwndEvent = CreateWindowA(WDML_szEventClass, NULL,
498 WS_POPUP, 0, 0, 0, 0,
501 SetWindowLongA(pInstance->hwndEvent, GWL_WDML_INSTANCE, (DWORD)pInstance);
503 TRACE("New application instance processing finished OK\n");
507 /* Reinitialisation situation --- FIX */
508 TRACE("reinitialisation of (%p,%p,0x%lx,%ld): stub\n", pidInst, pfnCallback, afCmd, ulRes);
510 EnterCriticalSection(&WDML_CritSect);
512 if (WDML_InstanceList == NULL)
514 ret = DMLERR_DLL_USAGE;
517 HeapFree(GetProcessHeap(), 0, pInstance); /* finished - release heap space used as work store */
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_DLL_USAGE;
544 /* Check 2 - cannot change monitor modes */
546 if (pInstance->monitor != reference_inst->monitor)
548 ret = DMLERR_DLL_USAGE;
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_DLL_USAGE;
561 reference_inst = reference_inst->next;
563 if (reference_inst->next == NULL)
565 /* Crazy situation - trying to re-initialize something that has not beeen initialized !!
567 * Manual does not say what we do, cannot return DMLERR_NOT_INITIALIZED so what ?
569 ret = DMLERR_INVALIDPARAMETER;
572 /* All checked - change relevant flags */
574 reference_inst->CBFflags = pInstance->CBFflags;
575 reference_inst->clientOnly = pInstance->clientOnly;
576 reference_inst->monitorFlags = pInstance->monitorFlags;
577 LeaveCriticalSection(&WDML_CritSect);
580 return DMLERR_NO_ERROR;
582 HeapFree(GetProcessHeap(), 0, pInstance);
583 LeaveCriticalSection(&WDML_CritSect);
587 /******************************************************************************
588 * DdeInitializeA (USER32.@)
590 UINT WINAPI DdeInitializeA(LPDWORD pidInst, PFNCALLBACK pfnCallback,
591 DWORD afCmd, DWORD ulRes)
593 return WDML_Initialize(pidInst, pfnCallback, afCmd, ulRes, FALSE, FALSE);
596 /******************************************************************************
597 * DdeInitializeW [USER32.@]
598 * Registers an application with the DDEML
601 * pidInst [I] Pointer to instance identifier
602 * pfnCallback [I] Pointer to callback function
603 * afCmd [I] Set of command and filter flags
607 * Success: DMLERR_NO_ERROR
608 * Failure: DMLERR_DLL_USAGE, DMLERR_INVALIDPARAMETER, DMLERR_SYS_ERROR
610 UINT WINAPI DdeInitializeW(LPDWORD pidInst, PFNCALLBACK pfnCallback,
611 DWORD afCmd, DWORD ulRes)
613 return WDML_Initialize(pidInst, pfnCallback, afCmd, ulRes, TRUE, FALSE);
616 /*****************************************************************
617 * DdeUninitialize [USER32.@] Frees DDEML resources
620 * idInst [I] Instance identifier
627 BOOL WINAPI DdeUninitialize(DWORD idInst)
629 /* Stage one - check if we have a handle for this instance
631 WDML_INSTANCE* pInstance;
633 WDML_CONV* pConvNext;
635 TRACE("(%ld)\n", idInst);
637 EnterCriticalSection(&WDML_CritSect);
639 /* First check instance
641 pInstance = WDML_GetInstance(idInst);
642 if (pInstance == NULL)
644 LeaveCriticalSection(&WDML_CritSect);
646 * Needs something here to record NOT_INITIALIZED ready for DdeGetLastError
651 /* first terminate all conversations client side
652 * this shall close existing links...
654 for (pConv = pInstance->convs[WDML_CLIENT_SIDE]; pConv != NULL; pConv = pConvNext)
656 pConvNext = pConv->next;
657 DdeDisconnect((HCONV)pConv);
659 if (pInstance->convs[WDML_CLIENT_SIDE])
660 FIXME("still pending conversations\n");
662 /* then unregister all known service names */
663 DdeNameService(idInst, 0, 0, DNS_UNREGISTER);
665 /* Free the nodes that were not freed by this instance
666 * and remove the nodes from the list of HSZ nodes.
668 WDML_FreeAllHSZ(pInstance);
670 DestroyWindow(pInstance->hwndEvent);
672 /* OK now delete the instance handle itself */
674 if (WDML_InstanceList == pInstance)
676 /* special case - the first/only entry */
677 WDML_InstanceList = pInstance->next;
681 /* general case, remove entry */
684 for (inst = WDML_InstanceList; inst->next != pInstance; inst = inst->next);
685 inst->next = pInstance->next;
687 /* leave crit sect and release the heap entry
689 HeapFree(GetProcessHeap(), 0, pInstance);
690 LeaveCriticalSection(&WDML_CritSect);
694 /******************************************************************
695 * WDML_NotifyThreadExit
699 void WDML_NotifyThreadDetach(void)
701 WDML_INSTANCE* pInstance;
703 DWORD tid = GetCurrentThreadId();
705 EnterCriticalSection(&WDML_CritSect);
706 for (pInstance = WDML_InstanceList; pInstance != NULL; pInstance = next)
708 next = pInstance->next;
709 if (pInstance->threadID == tid)
711 DdeUninitialize(pInstance->instanceID);
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 DWORD dwData1, DWORD dwData2)
728 if (pInstance == NULL)
730 TRACE("invoking CB%d[%p] (%x %x %p %p %p %p %lx %lx)\n",
731 pInstance->win16 ? 16 : 32, pInstance->callback, uType, uFmt,
732 hConv, hsz1, hsz2, hdata, dwData1, dwData2);
733 if (pInstance->win16)
735 ret = WDML_InvokeCallback16(pInstance->callback, uType, uFmt, hConv,
736 hsz1, hsz2, hdata, dwData1, dwData2);
740 ret = pInstance->callback(uType, uFmt, hConv, hsz1, hsz2, hdata, dwData1, dwData2);
742 TRACE("done => %p\n", ret);
746 /*****************************************************************************
749 * generic routine to return a pointer to the relevant DDE_HANDLE_ENTRY
750 * for an instance Id, or NULL if the entry does not exist
753 WDML_INSTANCE* WDML_GetInstance(DWORD instId)
755 WDML_INSTANCE* pInstance;
757 for (pInstance = WDML_InstanceList; pInstance != NULL; pInstance = pInstance->next)
759 if (pInstance->instanceID == instId)
761 if (GetCurrentThreadId() != pInstance->threadID)
763 FIXME("Tried to get instance from wrong thread\n");
769 TRACE("Instance entry missing\n");
773 /******************************************************************
774 * WDML_GetInstanceFromWnd
778 WDML_INSTANCE* WDML_GetInstanceFromWnd(HWND hWnd)
780 return (WDML_INSTANCE*)GetWindowLongA(hWnd, GWL_WDML_INSTANCE);
783 /******************************************************************************
784 * DdeGetLastError [USER32.@] Gets most recent error code
787 * idInst [I] Instance identifier
792 UINT WINAPI DdeGetLastError(DWORD idInst)
795 WDML_INSTANCE* pInstance;
797 FIXME("(%ld): error reporting is weakly implemented\n", idInst);
799 EnterCriticalSection(&WDML_CritSect);
801 /* First check instance
803 pInstance = WDML_GetInstance(idInst);
804 if (pInstance == NULL)
806 error_code = DMLERR_DLL_NOT_INITIALIZED;
810 error_code = pInstance->lastError;
811 pInstance->lastError = 0;
814 LeaveCriticalSection(&WDML_CritSect);
818 /* ================================================================
822 * ================================================================ */
825 /******************************************************************
830 static HSZNode* WDML_FindNode(WDML_INSTANCE* pInstance, HSZ hsz)
834 if (pInstance == NULL) return NULL;
836 for (pNode = pInstance->nodeList; pNode != NULL; pNode = pNode->next)
838 if (pNode->hsz == hsz) break;
840 if (!pNode) WARN("HSZ %p not found\n", hsz);
844 /******************************************************************
845 * WDML_MakeAtomFromHsz
847 * Creates a global atom from an existing HSZ
848 * Generally used before sending an HSZ as an atom to a remote app
850 ATOM WDML_MakeAtomFromHsz(HSZ hsz)
852 WCHAR nameBuffer[MAX_BUFFER_LEN];
854 if (GetAtomNameW(HSZ2ATOM(hsz), nameBuffer, MAX_BUFFER_LEN))
855 return GlobalAddAtomW(nameBuffer);
856 WARN("HSZ %p not found\n", hsz);
860 /******************************************************************
861 * WDML_MakeHszFromAtom
863 * Creates a HSZ from an existing global atom
864 * Generally used while receiving a global atom and transforming it
867 HSZ WDML_MakeHszFromAtom(WDML_INSTANCE* pInstance, ATOM atom)
869 WCHAR nameBuffer[MAX_BUFFER_LEN];
871 if (!atom) return NULL;
873 if (GlobalGetAtomNameW(atom, nameBuffer, MAX_BUFFER_LEN))
875 TRACE("%x => %s\n", atom, debugstr_w(nameBuffer));
876 return DdeCreateStringHandleW(pInstance->instanceID, nameBuffer, CP_WINUNICODE);
878 WARN("ATOM 0x%x not found\n", atom);
882 /******************************************************************
887 BOOL WDML_IncHSZ(WDML_INSTANCE* pInstance, HSZ hsz)
891 pNode = WDML_FindNode(pInstance, hsz);
892 if (!pNode) return FALSE;
898 /******************************************************************************
899 * WDML_DecHSZ (INTERNAL)
901 * Decrease the ref count of an HSZ. If it reaches 0, the node is removed from the list
903 * Returns -1 is the HSZ isn't found, otherwise it's the current (after --) of the ref count
905 BOOL WDML_DecHSZ(WDML_INSTANCE* pInstance, HSZ hsz)
907 HSZNode* pPrev = NULL;
910 for (pCurrent = pInstance->nodeList; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
912 /* If we found the node we were looking for and its ref count is one,
915 if (pCurrent->hsz == hsz)
917 if (--pCurrent->refCount == 0)
919 if (pCurrent == pInstance->nodeList)
921 pInstance->nodeList = pCurrent->next;
925 pPrev->next = pCurrent->next;
927 HeapFree(GetProcessHeap(), 0, pCurrent);
928 DeleteAtom(HSZ2ATOM(hsz));
933 WARN("HSZ %p not found\n", hsz);
938 /******************************************************************************
939 * WDML_FreeAllHSZ (INTERNAL)
941 * Frees up all the strings still allocated in the list and
942 * remove all the nodes from the list of HSZ nodes.
944 void WDML_FreeAllHSZ(WDML_INSTANCE* pInstance)
946 /* Free any strings created in this instance.
948 while (pInstance->nodeList != NULL)
950 DdeFreeStringHandle(pInstance->instanceID, pInstance->nodeList->hsz);
954 /******************************************************************************
955 * InsertHSZNode (INTERNAL)
957 * Insert a node to the head of the list.
959 static void WDML_InsertHSZNode(WDML_INSTANCE* pInstance, HSZ hsz)
963 HSZNode* pNew = NULL;
964 /* Create a new node for this HSZ.
966 pNew = (HSZNode*)HeapAlloc(GetProcessHeap(), 0, sizeof(HSZNode));
970 pNew->next = pInstance->nodeList;
972 pInstance->nodeList = pNew;
976 ERR("Primary HSZ Node allocation failed - out of memory\n");
981 /******************************************************************
986 static int WDML_QueryString(WDML_INSTANCE* pInstance, HSZ hsz, LPVOID ptr, DWORD cchMax,
989 WCHAR pString[MAX_BUFFER_LEN];
991 /* If psz is null, we have to return only the length
997 cchMax = MAX_BUFFER_LEN;
1003 ret = GetAtomNameA(HSZ2ATOM(hsz), ptr, cchMax);
1006 ret = GetAtomNameW(HSZ2ATOM(hsz), ptr, cchMax);
1008 ERR("Unknown code page %d\n", codepage);
1014 /*****************************************************************
1015 * DdeQueryStringA [USER32.@]
1017 DWORD WINAPI DdeQueryStringA(DWORD idInst, HSZ hsz, LPSTR psz, DWORD cchMax, INT iCodePage)
1020 WDML_INSTANCE* pInstance;
1022 TRACE("(%ld, %p, %p, %ld, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
1024 EnterCriticalSection(&WDML_CritSect);
1026 /* First check instance
1028 pInstance = WDML_GetInstance(idInst);
1029 if (pInstance != NULL)
1031 if (iCodePage == 0) iCodePage = CP_WINANSI;
1032 ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
1034 LeaveCriticalSection(&WDML_CritSect);
1036 TRACE("returning %ld (%s)\n", ret, debugstr_a(psz));
1040 /*****************************************************************
1041 * DdeQueryStringW [USER32.@]
1044 DWORD WINAPI DdeQueryStringW(DWORD idInst, HSZ hsz, LPWSTR psz, DWORD cchMax, INT iCodePage)
1047 WDML_INSTANCE* pInstance;
1049 TRACE("(%ld, %p, %p, %ld, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
1051 EnterCriticalSection(&WDML_CritSect);
1053 /* First check instance
1055 pInstance = WDML_GetInstance(idInst);
1056 if (pInstance != NULL)
1058 if (iCodePage == 0) iCodePage = CP_WINUNICODE;
1059 ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
1061 LeaveCriticalSection(&WDML_CritSect);
1063 TRACE("returning %ld (%s)\n", ret, debugstr_w(psz));
1067 /******************************************************************
1072 static HSZ WDML_CreateString(WDML_INSTANCE* pInstance, LPCVOID ptr, int codepage)
1079 hsz = ATOM2HSZ(AddAtomA(ptr));
1080 TRACE("added atom %s with HSZ %p, \n", debugstr_a(ptr), hsz);
1083 hsz = ATOM2HSZ(AddAtomW(ptr));
1084 TRACE("added atom %s with HSZ %p, \n", debugstr_w(ptr), hsz);
1087 ERR("Unknown code page %d\n", codepage);
1090 WDML_InsertHSZNode(pInstance, hsz);
1094 /*****************************************************************
1095 * DdeCreateStringHandleA [USER32.@]
1098 * Success: String handle
1101 HSZ WINAPI DdeCreateStringHandleA(DWORD idInst, LPCSTR psz, INT codepage)
1104 WDML_INSTANCE* pInstance;
1106 TRACE("(%ld,%s,%d)\n", idInst, debugstr_a(psz), codepage);
1108 EnterCriticalSection(&WDML_CritSect);
1110 pInstance = WDML_GetInstance(idInst);
1113 if (codepage == 0) codepage = CP_WINANSI;
1114 hsz = WDML_CreateString(pInstance, psz, codepage);
1117 LeaveCriticalSection(&WDML_CritSect);
1122 /******************************************************************************
1123 * DdeCreateStringHandleW [USER32.@] Creates handle to identify string
1126 * idInst [I] Instance identifier
1127 * psz [I] Pointer to string
1128 * codepage [I] Code page identifier
1130 * Success: String handle
1133 HSZ WINAPI DdeCreateStringHandleW(DWORD idInst, LPCWSTR psz, INT codepage)
1135 WDML_INSTANCE* pInstance;
1138 TRACE("(%ld,%s,%d)\n", idInst, debugstr_w(psz), codepage);
1140 EnterCriticalSection(&WDML_CritSect);
1142 pInstance = WDML_GetInstance(idInst);
1145 if (codepage == 0) codepage = CP_WINUNICODE;
1146 hsz = WDML_CreateString(pInstance, psz, codepage);
1148 LeaveCriticalSection(&WDML_CritSect);
1153 /*****************************************************************
1154 * DdeFreeStringHandle (USER32.@)
1155 * RETURNS: success: nonzero
1158 BOOL WINAPI DdeFreeStringHandle(DWORD idInst, HSZ hsz)
1160 WDML_INSTANCE* pInstance;
1163 TRACE("(%ld,%p): \n", idInst, hsz);
1165 EnterCriticalSection(&WDML_CritSect);
1167 /* First check instance
1169 pInstance = WDML_GetInstance(idInst);
1171 ret = WDML_DecHSZ(pInstance, hsz);
1173 LeaveCriticalSection(&WDML_CritSect);
1178 /*****************************************************************
1179 * DdeKeepStringHandle (USER32.@)
1181 * RETURNS: success: nonzero
1184 BOOL WINAPI DdeKeepStringHandle(DWORD idInst, HSZ hsz)
1186 WDML_INSTANCE* pInstance;
1189 TRACE("(%ld,%p): \n", idInst, hsz);
1191 EnterCriticalSection(&WDML_CritSect);
1193 /* First check instance
1195 pInstance = WDML_GetInstance(idInst);
1197 ret = WDML_IncHSZ(pInstance, hsz);
1199 LeaveCriticalSection(&WDML_CritSect);
1203 /*****************************************************************
1204 * DdeCmpStringHandles (USER32.@)
1206 * Compares the value of two string handles. This comparison is
1207 * not case sensitive.
1210 * -1 The value of hsz1 is zero or less than hsz2
1211 * 0 The values of hsz 1 and 2 are the same or both zero.
1212 * 1 The value of hsz2 is zero of less than hsz1
1214 INT WINAPI DdeCmpStringHandles(HSZ hsz1, HSZ hsz2)
1216 WCHAR psz1[MAX_BUFFER_LEN];
1217 WCHAR psz2[MAX_BUFFER_LEN];
1221 ret1 = GetAtomNameW(HSZ2ATOM(hsz1), psz1, MAX_BUFFER_LEN);
1222 ret2 = GetAtomNameW(HSZ2ATOM(hsz2), psz2, MAX_BUFFER_LEN);
1224 TRACE("(%p<%s> %p<%s>);\n", hsz1, debugstr_w(psz1), hsz2, debugstr_w(psz2));
1226 /* Make sure we found both strings. */
1227 if (ret1 == 0 && ret2 == 0)
1229 /* If both are not found, return both "zero strings". */
1234 /* If hsz1 is a not found, return hsz1 is "zero string". */
1239 /* If hsz2 is a not found, return hsz2 is "zero string". */
1244 /* Compare the two strings we got (case insensitive). */
1245 ret = lstrcmpiW(psz1, psz2);
1246 /* Since strcmp returns any number smaller than
1247 * 0 when the first string is found to be less than
1248 * the second one we must make sure we are returning
1249 * the proper values.
1264 /* ================================================================
1266 * Data handle management
1268 * ================================================================ */
1270 /*****************************************************************
1271 * DdeCreateDataHandle (USER32.@)
1273 HDDEDATA WINAPI DdeCreateDataHandle(DWORD idInst, LPBYTE pSrc, DWORD cb, DWORD cbOff,
1274 HSZ hszItem, UINT wFmt, UINT afCmd)
1276 /* For now, we ignore idInst, hszItem.
1277 * The purpose of these arguments still need to be investigated.
1282 DDE_DATAHANDLE_HEAD* pDdh;
1283 WCHAR psz[MAX_BUFFER_LEN];
1285 GetAtomNameW(HSZ2ATOM(hszItem), psz, MAX_BUFFER_LEN);
1287 TRACE("(%ld,%p,cb %ld, cbOff %ld,%p <%s>,%x,%x)\n",
1288 idInst, pSrc, cb, cbOff, hszItem, debugstr_w(psz), wFmt, afCmd);
1290 if (afCmd != 0 && afCmd != HDATA_APPOWNED)
1293 /* we use the first 4 bytes to store the size */
1294 if (!(hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, cb + cbOff + sizeof(DDE_DATAHANDLE_HEAD))))
1296 ERR("GlobalAlloc failed\n");
1300 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock(hMem);
1307 pDdh->cfFormat = wFmt;
1308 pDdh->bAppOwned = (afCmd == HDATA_APPOWNED);
1310 pByte = (LPBYTE)(pDdh + 1);
1313 memcpy(pByte, pSrc + cbOff, cb);
1317 return (HDDEDATA)hMem;
1320 /*****************************************************************
1322 * DdeAddData (USER32.@)
1324 HDDEDATA WINAPI DdeAddData(HDDEDATA hData, LPBYTE pSrc, DWORD cb, DWORD cbOff)
1326 DWORD old_sz, new_sz;
1329 TRACE("(%p,%p,cb %ld, cbOff %ld)\n", hData, pSrc, cb, cbOff);
1331 pDst = DdeAccessData(hData, &old_sz);
1332 if (!pDst) return 0;
1334 new_sz = cb + cbOff;
1335 if (new_sz > old_sz)
1337 DdeUnaccessData(hData);
1338 hData = GlobalReAlloc((HGLOBAL)hData, new_sz + sizeof(DDE_DATAHANDLE_HEAD),
1339 GMEM_MOVEABLE | GMEM_DDESHARE);
1340 pDst = DdeAccessData(hData, &old_sz);
1343 if (!pDst) return 0;
1345 memcpy(pDst + cbOff, pSrc, cb);
1346 DdeUnaccessData(hData);
1350 /******************************************************************************
1351 * DdeGetData [USER32.@] Copies data from DDE object to local buffer
1355 * hData [I] Handle to DDE object
1356 * pDst [I] Pointer to destination buffer
1357 * cbMax [I] Amount of data to copy
1358 * cbOff [I] Offset to beginning of data
1361 * Size of memory object associated with handle
1363 DWORD WINAPI DdeGetData(HDDEDATA hData, LPBYTE pDst, DWORD cbMax, DWORD cbOff)
1365 DWORD dwSize, dwRet;
1368 TRACE("(%p,%p,%ld,%ld)\n", hData, pDst, cbMax, cbOff);
1370 pByte = DdeAccessData(hData, &dwSize);
1378 else if (cbOff + cbMax < dwSize)
1382 else if (cbOff < dwSize)
1384 dwRet = dwSize - cbOff;
1390 if (pDst && dwRet != 0)
1392 memcpy(pDst, pByte + cbOff, dwRet);
1394 DdeUnaccessData(hData);
1403 /*****************************************************************
1404 * DdeAccessData (USER32.@)
1406 LPBYTE WINAPI DdeAccessData(HDDEDATA hData, LPDWORD pcbDataSize)
1408 HGLOBAL hMem = (HGLOBAL)hData;
1409 DDE_DATAHANDLE_HEAD* pDdh;
1411 TRACE("(%p,%p)\n", hData, pcbDataSize);
1413 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock(hMem);
1416 ERR("Failed on GlobalLock(%p)\n", hMem);
1420 if (pcbDataSize != NULL)
1422 *pcbDataSize = GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD);
1424 TRACE("=> %p (%lu)\n", pDdh + 1, GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD));
1425 return (LPBYTE)(pDdh + 1);
1428 /*****************************************************************
1429 * DdeUnaccessData (USER32.@)
1431 BOOL WINAPI DdeUnaccessData(HDDEDATA hData)
1433 HGLOBAL hMem = (HGLOBAL)hData;
1435 TRACE("(%p)\n", hData);
1442 /*****************************************************************
1443 * DdeFreeDataHandle (USER32.@)
1445 BOOL WINAPI DdeFreeDataHandle(HDDEDATA hData)
1447 TRACE("(%p)\n", hData);
1448 return GlobalFree((HGLOBAL)hData) == 0;
1451 /******************************************************************
1456 BOOL WDML_IsAppOwned(HDDEDATA hData)
1458 DDE_DATAHANDLE_HEAD* pDdh;
1461 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock((HGLOBAL)hData);
1464 ret = pDdh->bAppOwned;
1465 GlobalUnlock((HGLOBAL)hData);
1470 /* ================================================================
1472 * Global <=> Data handle management
1474 * ================================================================ */
1476 /* Note: we use a DDEDATA, but layout of DDEDATA, DDEADVISE and DDEPOKE structures is similar:
1478 * (bytes) (bits) comment
1479 * 0 16 bit fields for options (release, ackreq, response...)
1480 * 2 16 clipboard format
1481 * 4 ? data to be used
1483 HDDEDATA WDML_Global2DataHandle(HGLOBAL hMem, WINE_DDEHEAD* p)
1491 pDd = GlobalLock(hMem);
1492 size = GlobalSize(hMem) - sizeof(WINE_DDEHEAD);
1495 if (p) memcpy(p, pDd, sizeof(WINE_DDEHEAD));
1496 switch (pDd->cfFormat)
1499 FIXME("Unsupported format (%d) for data... assuming raw information\n",
1504 ret = DdeCreateDataHandle(0, pDd->Value, size, 0, 0, pDd->cfFormat, 0);
1507 if (size >= sizeof(BITMAP))
1509 BITMAP* bmp = (BITMAP*)pDd->Value;
1510 int count = bmp->bmWidthBytes * bmp->bmHeight * bmp->bmPlanes;
1511 if (size >= sizeof(BITMAP) + count)
1515 if ((hbmp = CreateBitmap(bmp->bmWidth, bmp->bmHeight,
1516 bmp->bmPlanes, bmp->bmBitsPixel,
1517 pDd->Value + sizeof(BITMAP))))
1519 ret = DdeCreateDataHandle(0, (LPBYTE)&hbmp, sizeof(hbmp),
1520 0, 0, CF_BITMAP, 0);
1522 else ERR("Can't create bmp\n");
1526 ERR("Wrong count: %lu / %d\n", size, sizeof(BITMAP) + count);
1528 } else ERR("No bitmap header\n");
1537 /******************************************************************
1538 * WDML_DataHandle2Global
1542 HGLOBAL WDML_DataHandle2Global(HDDEDATA hDdeData, BOOL fResponse, BOOL fRelease,
1543 BOOL fDeferUpd, BOOL fAckReq)
1545 DDE_DATAHANDLE_HEAD* pDdh;
1549 dwSize = GlobalSize((HGLOBAL)hDdeData) - sizeof(DDE_DATAHANDLE_HEAD);
1550 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock((HGLOBAL)hDdeData);
1553 WINE_DDEHEAD* wdh = NULL;
1555 switch (pDdh->cfFormat)
1558 FIXME("Unsupported format (%d) for data... passing raw information\n", pDdh->cfFormat);
1562 hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, sizeof(WINE_DDEHEAD) + dwSize);
1563 if (hMem && (wdh = GlobalLock(hMem)))
1565 memcpy(wdh + 1, pDdh + 1, dwSize);
1569 if (dwSize >= sizeof(HBITMAP))
1573 HBITMAP hbmp = *(HBITMAP*)(pDdh + 1);
1575 if (GetObjectA(hbmp, sizeof(bmp), &bmp))
1577 count = bmp.bmWidthBytes * bmp.bmHeight;
1578 hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE,
1579 sizeof(WINE_DDEHEAD) + sizeof(bmp) + count);
1580 if (hMem && (wdh = GlobalLock(hMem)))
1582 memcpy(wdh + 1, &bmp, sizeof(bmp));
1583 GetBitmapBits(hbmp, count, ((char*)(wdh + 1)) + sizeof(bmp));
1592 wdh->fResponse = fResponse;
1593 wdh->fRelease = fRelease;
1594 wdh->fDeferUpd = fDeferUpd;
1595 wdh->fAckReq = fAckReq;
1596 wdh->cfFormat = pDdh->cfFormat;
1599 GlobalUnlock((HGLOBAL)hDdeData);
1605 /* ================================================================
1609 * ================================================================ */
1611 /******************************************************************
1616 WDML_SERVER* WDML_AddServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1618 WDML_SERVER* pServer;
1622 pServer = (WDML_SERVER*)HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_SERVER));
1623 if (pServer == NULL) return NULL;
1625 WDML_IncHSZ(pInstance, pServer->hszService = hszService);
1627 DdeQueryStringA(pInstance->instanceID, hszService, buf1, sizeof(buf1), CP_WINANSI);
1628 snprintf(buf2, sizeof(buf2), "%s(0x%08lx)", buf1, GetCurrentProcessId());
1629 pServer->hszServiceSpec = DdeCreateStringHandleA(pInstance->instanceID, buf2, CP_WINANSI);
1631 pServer->atomService = WDML_MakeAtomFromHsz(pServer->hszService);
1632 pServer->atomServiceSpec = WDML_MakeAtomFromHsz(pServer->hszServiceSpec);
1634 pServer->filterOn = TRUE;
1636 pServer->next = pInstance->servers;
1637 pInstance->servers = pServer;
1641 /******************************************************************
1646 void WDML_RemoveServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1648 WDML_SERVER* pPrev = NULL;
1649 WDML_SERVER* pServer = NULL;
1651 WDML_CONV* pConvNext;
1653 pServer = pInstance->servers;
1655 while (pServer != NULL)
1657 if (DdeCmpStringHandles(pServer->hszService, hszService) == 0)
1659 WDML_BroadcastDDEWindows(WDML_szEventClass, WM_WDML_UNREGISTER,
1660 pServer->atomService, pServer->atomServiceSpec);
1661 /* terminate all conversations for given topic */
1662 for (pConv = pInstance->convs[WDML_SERVER_SIDE]; pConv != NULL; pConv = pConvNext)
1664 pConvNext = pConv->next;
1665 if (DdeCmpStringHandles(pConv->hszService, hszService) == 0)
1667 WDML_RemoveConv(pConv, WDML_SERVER_SIDE);
1668 /* don't care about return code (whether client window is present or not) */
1669 PostMessageA(pConv->hwndClient, WM_DDE_TERMINATE, (WPARAM)pConv->hwndServer, 0L);
1672 if (pServer == pInstance->servers)
1674 pInstance->servers = pServer->next;
1678 pPrev->next = pServer->next;
1681 DestroyWindow(pServer->hwndServer);
1682 WDML_DecHSZ(pInstance, pServer->hszServiceSpec);
1683 WDML_DecHSZ(pInstance, pServer->hszService);
1685 GlobalDeleteAtom(pServer->atomService);
1686 GlobalDeleteAtom(pServer->atomServiceSpec);
1688 HeapFree(GetProcessHeap(), 0, pServer);
1693 pServer = pServer->next;
1697 /*****************************************************************************
1700 * generic routine to return a pointer to the relevant ServiceNode
1701 * for a given service name, or NULL if the entry does not exist
1704 WDML_SERVER* WDML_FindServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1706 WDML_SERVER* pServer;
1708 for (pServer = pInstance->servers; pServer != NULL; pServer = pServer->next)
1710 if (hszService == pServer->hszService)
1715 TRACE("Service name missing\n");
1719 /* ================================================================
1721 * Conversation management
1723 * ================================================================ */
1725 /******************************************************************
1730 WDML_CONV* WDML_AddConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
1731 HSZ hszService, HSZ hszTopic, HWND hwndClient, HWND hwndServer)
1735 /* no converstation yet, add it */
1736 pConv = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_CONV));
1737 if (!pConv) return NULL;
1739 pConv->instance = pInstance;
1740 WDML_IncHSZ(pInstance, pConv->hszService = hszService);
1741 WDML_IncHSZ(pInstance, pConv->hszTopic = hszTopic);
1742 pConv->hwndServer = hwndServer;
1743 pConv->hwndClient = hwndClient;
1744 pConv->transactions = NULL;
1746 pConv->wStatus = (side == WDML_CLIENT_SIDE) ? ST_CLIENT : 0L;
1747 /* check if both side of the conversation are of the same instance */
1748 if (GetWindowThreadProcessId(hwndClient, NULL) == GetWindowThreadProcessId(hwndServer, NULL) &&
1749 WDML_GetInstanceFromWnd(hwndClient) == WDML_GetInstanceFromWnd(hwndServer))
1751 pConv->wStatus |= ST_ISSELF;
1753 pConv->wConvst = XST_NULL;
1755 pConv->next = pInstance->convs[side];
1756 pInstance->convs[side] = pConv;
1761 /******************************************************************
1766 WDML_CONV* WDML_FindConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
1767 HSZ hszService, HSZ hszTopic)
1769 WDML_CONV* pCurrent = NULL;
1771 for (pCurrent = pInstance->convs[side]; pCurrent != NULL; pCurrent = pCurrent->next)
1773 if (DdeCmpStringHandles(pCurrent->hszService, hszService) == 0 &&
1774 DdeCmpStringHandles(pCurrent->hszTopic, hszTopic) == 0)
1783 /******************************************************************
1788 void WDML_RemoveConv(WDML_CONV* pRef, WDML_SIDE side)
1790 WDML_CONV* pPrev = NULL;
1791 WDML_CONV* pCurrent;
1793 WDML_XACT* pXActNext;
1799 /* remove any pending transaction */
1800 for (pXAct = pRef->transactions; pXAct != NULL; pXAct = pXActNext)
1802 pXActNext = pXAct->next;
1803 WDML_FreeTransaction(pRef->instance, pXAct, TRUE);
1806 WDML_RemoveAllLinks(pRef->instance, pRef, side);
1808 /* FIXME: should we keep the window around ? it seems so (at least on client side
1809 * to let QueryConvInfo work after conv termination, but also to implement
1812 /* destroy conversation window, but first remove pConv from hWnd.
1813 * this would help the wndProc do appropriate handling upon a WM_DESTROY message
1815 hWnd = (side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer;
1816 SetWindowLongA(hWnd, GWL_WDML_CONVERSATION, 0);
1818 DestroyWindow((side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer);
1820 WDML_DecHSZ(pRef->instance, pRef->hszService);
1821 WDML_DecHSZ(pRef->instance, pRef->hszTopic);
1823 for (pCurrent = pRef->instance->convs[side]; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
1825 if (pCurrent == pRef)
1827 if (pCurrent == pRef->instance->convs[side])
1829 pRef->instance->convs[side] = pCurrent->next;
1833 pPrev->next = pCurrent->next;
1836 HeapFree(GetProcessHeap(), 0, pCurrent);
1842 /******************************************************************
1843 * WDML_EnableCallback
1845 static BOOL WDML_EnableCallback(WDML_CONV *pConv, UINT wCmd)
1847 if (wCmd == EC_DISABLE)
1849 FIXME("EC_DISABLE is not implemented\n");
1853 if (wCmd == EC_QUERYWAITING)
1854 return pConv->transactions ? TRUE : FALSE;
1856 if (wCmd != EC_ENABLEALL && wCmd != EC_ENABLEONE)
1858 FIXME("Unknown command code %04x\n", wCmd);
1862 while (pConv->transactions)
1864 WDML_XACT *pXAct = pConv->transactions;
1865 WDML_UnQueueTransaction(pConv, pXAct);
1867 if (pConv->wStatus & ST_CLIENT)
1869 /*WDML_ClientHandle(pConv, pXAct);*/
1870 FIXME("Client delayed transaction queue handling is not supported\n");
1873 WDML_ServerHandle(pConv, pXAct);
1875 WDML_FreeTransaction(pConv->instance, pXAct, TRUE);
1877 if (wCmd == EC_ENABLEONE) break;
1882 /*****************************************************************
1883 * DdeEnableCallback (USER32.@)
1885 BOOL WINAPI DdeEnableCallback(DWORD idInst, HCONV hConv, UINT wCmd)
1890 TRACE("(%ld, %p, %04x)\n", idInst, hConv, wCmd);
1892 EnterCriticalSection(&WDML_CritSect);
1894 pConv = WDML_GetConv(hConv, TRUE);
1896 if (pConv && pConv->instance->instanceID == idInst)
1897 ret = WDML_EnableCallback(pConv, wCmd);
1899 LeaveCriticalSection(&WDML_CritSect);
1903 /******************************************************************
1908 WDML_CONV* WDML_GetConv(HCONV hConv, BOOL checkConnected)
1910 WDML_CONV* pConv = (WDML_CONV*)hConv;
1912 /* FIXME: should do better checking */
1913 if (pConv == NULL) return NULL;
1915 if (checkConnected && !(pConv->wStatus & ST_CONNECTED))
1917 FIXME("found conv but ain't connected\n");
1920 if (GetCurrentThreadId() != pConv->instance->threadID)
1922 FIXME("wrong thread ID\n");
1929 /******************************************************************
1930 * WDML_GetConvFromWnd
1934 WDML_CONV* WDML_GetConvFromWnd(HWND hWnd)
1936 return (WDML_CONV*)GetWindowLongA(hWnd, GWL_WDML_CONVERSATION);
1939 /******************************************************************
1944 BOOL WDML_PostAck(WDML_CONV* pConv, WDML_SIDE side, WORD appRetCode,
1945 BOOL fBusy, BOOL fAck, UINT pmt, LPARAM lParam, UINT oldMsg)
1950 if (side == WDML_SERVER_SIDE)
1952 from = pConv->hwndServer;
1953 to = pConv->hwndClient;
1957 to = pConv->hwndServer;
1958 from = pConv->hwndClient;
1961 ddeAck.bAppReturnCode = appRetCode;
1962 ddeAck.reserved = 0;
1963 ddeAck.fBusy = fBusy;
1966 TRACE("Posting a %s ack\n", ddeAck.fAck ? "positive" : "negative");
1968 lParam = (lParam) ? ReuseDDElParam(lParam, oldMsg, WM_DDE_ACK, *(WORD*)&ddeAck, pmt) :
1969 PackDDElParam(WM_DDE_ACK, *(WORD*)&ddeAck, pmt);
1970 if (!PostMessageA(to, WM_DDE_ACK, (WPARAM)from, lParam))
1972 pConv->wStatus &= ~ST_CONNECTED;
1973 FreeDDElParam(WM_DDE_ACK, lParam);
1979 /*****************************************************************
1980 * DdeSetUserHandle (USER32.@)
1982 BOOL WINAPI DdeSetUserHandle(HCONV hConv, DWORD id, DWORD hUser)
1987 TRACE("(%p,%lx,%lx)\n", hConv, id, hUser);
1989 EnterCriticalSection(&WDML_CritSect);
1991 pConv = WDML_GetConv(hConv, FALSE);
1999 pConv->hUser = hUser;
2005 pXAct = WDML_FindTransaction(pConv, id);
2008 pXAct->hUser = hUser;
2012 pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
2017 LeaveCriticalSection(&WDML_CritSect);
2021 /******************************************************************
2022 * WDML_GetLocalConvInfo
2026 static BOOL WDML_GetLocalConvInfo(WDML_CONV* pConv, CONVINFO* ci, DWORD id)
2032 ci->hConvPartner = (pConv->wStatus & ST_ISLOCAL) ? (HCONV)((DWORD)pConv | 1) : 0;
2033 ci->hszSvcPartner = pConv->hszService;
2034 ci->hszServiceReq = pConv->hszService; /* FIXME: they shouldn't be the same, should they ? */
2035 ci->hszTopic = pConv->hszTopic;
2036 ci->wStatus = pConv->wStatus;
2038 side = (pConv->wStatus & ST_CLIENT) ? WDML_CLIENT_SIDE : WDML_SERVER_SIDE;
2040 for (pLink = pConv->instance->links[side]; pLink != NULL; pLink = pLink->next)
2042 if (pLink->hConv == (HCONV)pConv)
2044 ci->wStatus |= ST_ADVISE;
2049 /* FIXME: non handled status flags:
2055 ci->wConvst = pConv->wConvst; /* FIXME */
2057 ci->wLastError = 0; /* FIXME: note it's not the instance last error */
2059 ci->ConvCtxt = pConv->convContext;
2060 if (ci->wStatus & ST_CLIENT)
2062 ci->hwnd = pConv->hwndClient;
2063 ci->hwndPartner = pConv->hwndServer;
2067 ci->hwnd = pConv->hwndServer;
2068 ci->hwndPartner = pConv->hwndClient;
2072 ci->hUser = pConv->hUser;
2081 pXAct = WDML_FindTransaction(pConv, id);
2084 ci->hUser = pXAct->hUser;
2085 ci->hszItem = pXAct->hszItem;
2086 ci->wFmt = pXAct->wFmt;
2087 ci->wType = pXAct->wType;
2092 pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
2098 /******************************************************************
2099 * DdeQueryConvInfo (USER32.@)
2102 UINT WINAPI DdeQueryConvInfo(HCONV hConv, DWORD id, PCONVINFO lpConvInfo)
2104 UINT ret = lpConvInfo->cb;
2108 TRACE("(%p,%lx,%p)\n", hConv, id, lpConvInfo);
2112 FIXME("hConv is NULL\n");
2116 EnterCriticalSection(&WDML_CritSect);
2118 pConv = WDML_GetConv(hConv, FALSE);
2119 if (pConv != NULL && !WDML_GetLocalConvInfo(pConv, &ci, id))
2123 else if ((DWORD)hConv & 1)
2125 pConv = WDML_GetConv((HCONV)((DWORD)hConv & ~1), FALSE);
2128 FIXME("Request on remote conversation information is not implemented yet\n");
2132 LeaveCriticalSection(&WDML_CritSect);
2134 memcpy(lpConvInfo, &ci, min((size_t)lpConvInfo->cb, sizeof(ci)));
2138 /* ================================================================
2140 * Link (hot & warm) management
2142 * ================================================================ */
2144 /******************************************************************
2149 void WDML_AddLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2150 UINT wType, HSZ hszItem, UINT wFmt)
2154 pLink = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_LINK));
2161 pLink->hConv = hConv;
2162 pLink->transactionType = wType;
2163 WDML_IncHSZ(pInstance, pLink->hszItem = hszItem);
2165 pLink->next = pInstance->links[side];
2166 pInstance->links[side] = pLink;
2169 /******************************************************************
2174 void WDML_RemoveLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2175 HSZ hszItem, UINT uFmt)
2177 WDML_LINK* pPrev = NULL;
2178 WDML_LINK* pCurrent = NULL;
2180 pCurrent = pInstance->links[side];
2182 while (pCurrent != NULL)
2184 if (pCurrent->hConv == hConv &&
2185 DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
2186 pCurrent->uFmt == uFmt)
2188 if (pCurrent == pInstance->links[side])
2190 pInstance->links[side] = pCurrent->next;
2194 pPrev->next = pCurrent->next;
2197 WDML_DecHSZ(pInstance, pCurrent->hszItem);
2198 HeapFree(GetProcessHeap(), 0, pCurrent);
2203 pCurrent = pCurrent->next;
2207 /* this function is called to remove all links related to the conv.
2208 It should be called from both client and server when terminating
2211 /******************************************************************
2212 * WDML_RemoveAllLinks
2216 void WDML_RemoveAllLinks(WDML_INSTANCE* pInstance, WDML_CONV* pConv, WDML_SIDE side)
2218 WDML_LINK* pPrev = NULL;
2219 WDML_LINK* pCurrent = NULL;
2220 WDML_LINK* pNext = NULL;
2222 pCurrent = pInstance->links[side];
2224 while (pCurrent != NULL)
2226 if (pCurrent->hConv == (HCONV)pConv)
2228 if (pCurrent == pInstance->links[side])
2230 pInstance->links[side] = pCurrent->next;
2231 pNext = pCurrent->next;
2235 pPrev->next = pCurrent->next;
2236 pNext = pCurrent->next;
2239 WDML_DecHSZ(pInstance, pCurrent->hszItem);
2241 HeapFree(GetProcessHeap(), 0, pCurrent);
2248 pCurrent = pCurrent->next;
2257 /******************************************************************
2262 WDML_LINK* WDML_FindLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2263 HSZ hszItem, BOOL use_fmt, UINT uFmt)
2265 WDML_LINK* pCurrent = NULL;
2267 for (pCurrent = pInstance->links[side]; pCurrent != NULL; pCurrent = pCurrent->next)
2269 /* we don't need to check for transaction type as it can be altered */
2271 if (pCurrent->hConv == hConv &&
2272 DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
2273 (!use_fmt || pCurrent->uFmt == uFmt))
2283 /* ================================================================
2285 * Transaction management
2287 * ================================================================ */
2289 /******************************************************************
2290 * WDML_AllocTransaction
2292 * Alloc a transaction structure for handling the message ddeMsg
2294 WDML_XACT* WDML_AllocTransaction(WDML_INSTANCE* pInstance, UINT ddeMsg,
2295 UINT wFmt, HSZ hszItem)
2298 static WORD tid = 1; /* FIXME: wrap around */
2300 pXAct = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_XACT));
2303 pInstance->lastError = DMLERR_MEMORY_ERROR;
2307 pXAct->xActID = tid++;
2308 pXAct->ddeMsg = ddeMsg;
2309 pXAct->hDdeData = 0;
2314 if ((pXAct->hszItem = hszItem)) WDML_IncHSZ(pInstance, pXAct->hszItem);
2322 /******************************************************************
2323 * WDML_QueueTransaction
2325 * Adds a transaction to the list of transaction
2327 void WDML_QueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
2331 /* advance to last in queue */
2332 for (pt = &pConv->transactions; *pt != NULL; pt = &(*pt)->next);
2336 /******************************************************************
2337 * WDML_UnQueueTransaction
2341 BOOL WDML_UnQueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
2345 for (pt = &pConv->transactions; *pt; pt = &(*pt)->next)
2356 /******************************************************************
2357 * WDML_FreeTransaction
2361 void WDML_FreeTransaction(WDML_INSTANCE* pInstance, WDML_XACT* pXAct, BOOL doFreePmt)
2363 /* free pmt(s) in pXAct too. check against one for not deleting TRUE return values */
2364 if (doFreePmt && (DWORD)pXAct->hMem > 1)
2366 GlobalFree(pXAct->hMem);
2368 if (pXAct->hszItem) WDML_DecHSZ(pInstance, pXAct->hszItem);
2370 HeapFree(GetProcessHeap(), 0, pXAct);
2373 /******************************************************************
2374 * WDML_FindTransaction
2378 WDML_XACT* WDML_FindTransaction(WDML_CONV* pConv, DWORD tid)
2383 for (pXAct = pConv->transactions; pXAct; pXAct = pXAct->next)
2385 if (pXAct->xActID == tid)
2391 /* ================================================================
2393 * Information broadcast across DDEML implementations
2395 * ================================================================ */
2397 struct tagWDML_BroadcastPmt
2405 /******************************************************************
2406 * WDML_BroadcastEnumProc
2410 static BOOL CALLBACK WDML_BroadcastEnumProc(HWND hWnd, LPARAM lParam)
2412 struct tagWDML_BroadcastPmt* s = (struct tagWDML_BroadcastPmt*)lParam;
2415 if (GetClassNameA(hWnd, buffer, sizeof(buffer)) > 0 &&
2416 strcmp(buffer, s->clsName) == 0)
2418 PostMessageA(hWnd, s->uMsg, s->wParam, s->lParam);
2423 /******************************************************************
2424 * WDML_BroadcastDDEWindows
2428 void WDML_BroadcastDDEWindows(const char* clsName, UINT uMsg, WPARAM wParam, LPARAM lParam)
2430 struct tagWDML_BroadcastPmt s;
2432 s.clsName = clsName;
2436 EnumWindows(WDML_BroadcastEnumProc, (LPARAM)&s);