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 MAKELPARAM(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)\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
= 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 HeapFree(GetProcessHeap(), 0, pInstance
); /* finished - release heap space used as work store */
519 /* can't reinitialise if we have initialised nothing !! */
520 reference_inst
= WDML_InstanceList
;
521 /* must first check if we have been given a valid instance to re-initialise !! how do we do that ? */
523 * MS allows initialisation without specifying a callback, should we allow addition of the
524 * callback by a later call to initialise ? - if so this lot will have to change
526 while (reference_inst
->next
!= NULL
)
528 if (*pidInst
== reference_inst
->instanceID
&& pfnCallback
== reference_inst
->callback
)
530 /* Check 1 - cannot change client-only mode if set via APPCMD_CLIENTONLY */
532 if (reference_inst
->clientOnly
)
534 if ((reference_inst
->CBFflags
& CBF_FAIL_ALLSVRXACTIONS
) != CBF_FAIL_ALLSVRXACTIONS
)
536 /* i.e. Was set to Client-only and through APPCMD_CLIENTONLY */
538 if (!(afCmd
& APPCMD_CLIENTONLY
))
540 ret
= DMLERR_INVALIDPARAMETER
;
545 /* Check 2 - cannot change monitor modes */
547 if (pInstance
->monitor
!= reference_inst
->monitor
)
549 ret
= DMLERR_INVALIDPARAMETER
;
553 /* Check 3 - trying to set Client-only via APPCMD when not set so previously */
555 if ((afCmd
&APPCMD_CLIENTONLY
) && !reference_inst
->clientOnly
)
557 ret
= DMLERR_INVALIDPARAMETER
;
562 reference_inst
= reference_inst
->next
;
564 if (reference_inst
->next
== NULL
)
566 ret
= DMLERR_INVALIDPARAMETER
;
569 /* All checked - change relevant flags */
571 reference_inst
->CBFflags
= pInstance
->CBFflags
;
572 reference_inst
->clientOnly
= pInstance
->clientOnly
;
573 reference_inst
->monitorFlags
= pInstance
->monitorFlags
;
574 LeaveCriticalSection(&WDML_CritSect
);
577 return DMLERR_NO_ERROR
;
579 HeapFree(GetProcessHeap(), 0, pInstance
);
580 LeaveCriticalSection(&WDML_CritSect
);
584 /******************************************************************************
585 * DdeInitializeA (USER32.@)
587 * See DdeInitializeW.
589 UINT WINAPI
DdeInitializeA(LPDWORD pidInst
, PFNCALLBACK pfnCallback
,
590 DWORD afCmd
, DWORD ulRes
)
592 return WDML_Initialize(pidInst
, pfnCallback
, afCmd
, ulRes
, FALSE
, FALSE
);
595 /******************************************************************************
596 * DdeInitializeW [USER32.@]
597 * Registers an application with the DDEML
600 * pidInst [I] Pointer to instance identifier
601 * pfnCallback [I] Pointer to callback function
602 * afCmd [I] Set of command and filter flags
606 * Success: DMLERR_NO_ERROR
607 * Failure: DMLERR_DLL_USAGE, DMLERR_INVALIDPARAMETER, DMLERR_SYS_ERROR
609 UINT WINAPI
DdeInitializeW(LPDWORD pidInst
, PFNCALLBACK pfnCallback
,
610 DWORD afCmd
, DWORD ulRes
)
612 return WDML_Initialize(pidInst
, pfnCallback
, afCmd
, ulRes
, TRUE
, FALSE
);
615 /*****************************************************************
616 * DdeUninitialize [USER32.@] Frees DDEML resources
619 * idInst [I] Instance identifier
626 BOOL WINAPI
DdeUninitialize(DWORD idInst
)
628 /* Stage one - check if we have a handle for this instance
630 WDML_INSTANCE
* pInstance
;
632 WDML_CONV
* pConvNext
;
634 TRACE("(%d)\n", idInst
);
636 /* First check instance
638 pInstance
= WDML_GetInstance(idInst
);
639 if (pInstance
== NULL
)
642 * Needs something here to record NOT_INITIALIZED ready for DdeGetLastError
647 /* first terminate all conversations client side
648 * this shall close existing links...
650 for (pConv
= pInstance
->convs
[WDML_CLIENT_SIDE
]; pConv
!= NULL
; pConv
= pConvNext
)
652 pConvNext
= pConv
->next
;
653 DdeDisconnect((HCONV
)pConv
);
655 if (pInstance
->convs
[WDML_CLIENT_SIDE
])
656 FIXME("still pending conversations\n");
658 /* then unregister all known service names */
659 DdeNameService(idInst
, 0, 0, DNS_UNREGISTER
);
661 /* Free the nodes that were not freed by this instance
662 * and remove the nodes from the list of HSZ nodes.
664 WDML_FreeAllHSZ(pInstance
);
666 DestroyWindow(pInstance
->hwndEvent
);
668 /* OK now delete the instance handle itself */
670 if (WDML_InstanceList
== pInstance
)
672 /* special case - the first/only entry */
673 WDML_InstanceList
= pInstance
->next
;
677 /* general case, remove entry */
680 for (inst
= WDML_InstanceList
; inst
->next
!= pInstance
; inst
= inst
->next
);
681 inst
->next
= pInstance
->next
;
683 /* release the heap entry
685 HeapFree(GetProcessHeap(), 0, pInstance
);
690 /******************************************************************
691 * WDML_NotifyThreadExit
695 void WDML_NotifyThreadDetach(void)
697 WDML_INSTANCE
* pInstance
;
699 DWORD tid
= GetCurrentThreadId();
701 EnterCriticalSection(&WDML_CritSect
);
702 for (pInstance
= WDML_InstanceList
; pInstance
!= NULL
; pInstance
= next
)
704 next
= pInstance
->next
;
705 if (pInstance
->threadID
== tid
)
707 LeaveCriticalSection(&WDML_CritSect
);
708 DdeUninitialize(pInstance
->instanceID
);
709 EnterCriticalSection(&WDML_CritSect
);
712 LeaveCriticalSection(&WDML_CritSect
);
715 /******************************************************************
716 * WDML_InvokeCallback
720 HDDEDATA
WDML_InvokeCallback(WDML_INSTANCE
* pInstance
, UINT uType
, UINT uFmt
, HCONV hConv
,
721 HSZ hsz1
, HSZ hsz2
, HDDEDATA hdata
,
722 ULONG_PTR dwData1
, ULONG_PTR dwData2
)
726 if (pInstance
== NULL
)
729 TRACE("invoking CB%d[%p] (%x %x %p %p %p %p %lx %lx)\n",
730 pInstance
->win16
? 16 : 32, pInstance
->callback
, uType
, uFmt
,
731 hConv
, hsz1
, hsz2
, hdata
, dwData1
, dwData2
);
732 if (pInstance
->win16
)
734 ret
= WDML_InvokeCallback16(pInstance
->callback
, uType
, uFmt
, hConv
,
735 hsz1
, hsz2
, hdata
, dwData1
, dwData2
);
739 ret
= pInstance
->callback(uType
, uFmt
, hConv
, hsz1
, hsz2
, hdata
, dwData1
, dwData2
);
741 TRACE("done => %p\n", ret
);
745 /*****************************************************************************
748 * generic routine to return a pointer to the relevant DDE_HANDLE_ENTRY
749 * for an instance Id, or NULL if the entry does not exist
752 WDML_INSTANCE
* WDML_GetInstance(DWORD instId
)
754 WDML_INSTANCE
* pInstance
;
756 EnterCriticalSection(&WDML_CritSect
);
758 for (pInstance
= WDML_InstanceList
; pInstance
!= NULL
; pInstance
= pInstance
->next
)
760 if (pInstance
->instanceID
== instId
)
762 if (GetCurrentThreadId() != pInstance
->threadID
)
764 FIXME("Tried to get instance from wrong thread\n");
771 LeaveCriticalSection(&WDML_CritSect
);
774 WARN("Instance entry missing for id %04x\n", instId
);
778 /******************************************************************
779 * WDML_GetInstanceFromWnd
783 WDML_INSTANCE
* WDML_GetInstanceFromWnd(HWND hWnd
)
785 return (WDML_INSTANCE
*)GetWindowLongPtrW(hWnd
, GWL_WDML_INSTANCE
);
788 /******************************************************************************
789 * DdeGetLastError [USER32.@] Gets most recent error code
792 * idInst [I] Instance identifier
797 UINT WINAPI
DdeGetLastError(DWORD idInst
)
800 WDML_INSTANCE
* pInstance
;
802 /* First check instance
804 pInstance
= WDML_GetInstance(idInst
);
805 if (pInstance
== NULL
)
807 error_code
= DMLERR_INVALIDPARAMETER
;
811 error_code
= pInstance
->lastError
;
812 pInstance
->lastError
= 0;
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(const 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
= 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
);
1009 ERR("Unknown code page %d\n", codepage
);
1015 /*****************************************************************
1016 * DdeQueryStringA [USER32.@]
1018 DWORD WINAPI
DdeQueryStringA(DWORD idInst
, HSZ hsz
, LPSTR psz
, DWORD cchMax
, INT iCodePage
)
1021 WDML_INSTANCE
* pInstance
;
1023 TRACE("(%d, %p, %p, %d, %d)\n", idInst
, hsz
, psz
, cchMax
, iCodePage
);
1025 /* First check instance
1027 pInstance
= WDML_GetInstance(idInst
);
1028 if (pInstance
!= NULL
)
1030 if (iCodePage
== 0) iCodePage
= CP_WINANSI
;
1031 ret
= WDML_QueryString(pInstance
, hsz
, psz
, cchMax
, iCodePage
);
1034 TRACE("returning %d (%s)\n", ret
, debugstr_a(psz
));
1038 /*****************************************************************
1039 * DdeQueryStringW [USER32.@]
1042 DWORD WINAPI
DdeQueryStringW(DWORD idInst
, HSZ hsz
, LPWSTR psz
, DWORD cchMax
, INT iCodePage
)
1045 WDML_INSTANCE
* pInstance
;
1047 TRACE("(%d, %p, %p, %d, %d)\n", idInst
, hsz
, psz
, cchMax
, iCodePage
);
1049 /* First check instance
1051 pInstance
= WDML_GetInstance(idInst
);
1052 if (pInstance
!= NULL
)
1054 if (iCodePage
== 0) iCodePage
= CP_WINUNICODE
;
1055 ret
= WDML_QueryString(pInstance
, hsz
, psz
, cchMax
, iCodePage
);
1058 TRACE("returning %d (%s)\n", ret
, debugstr_w(psz
));
1062 /******************************************************************
1067 static HSZ
WDML_CreateString(WDML_INSTANCE
* pInstance
, LPCVOID ptr
, int codepage
)
1074 hsz
= ATOM2HSZ(AddAtomA(ptr
));
1075 TRACE("added atom %s with HSZ %p,\n", debugstr_a(ptr
), hsz
);
1078 hsz
= ATOM2HSZ(AddAtomW(ptr
));
1079 TRACE("added atom %s with HSZ %p,\n", debugstr_w(ptr
), hsz
);
1082 ERR("Unknown code page %d\n", codepage
);
1085 WDML_InsertHSZNode(pInstance
, hsz
);
1089 /*****************************************************************
1090 * DdeCreateStringHandleA [USER32.@]
1092 * See DdeCreateStringHandleW.
1094 HSZ WINAPI
DdeCreateStringHandleA(DWORD idInst
, LPCSTR psz
, INT codepage
)
1097 WDML_INSTANCE
* pInstance
;
1099 TRACE("(%d,%s,%d)\n", idInst
, debugstr_a(psz
), codepage
);
1101 pInstance
= WDML_GetInstance(idInst
);
1104 if (codepage
== 0) codepage
= CP_WINANSI
;
1105 hsz
= WDML_CreateString(pInstance
, psz
, codepage
);
1112 /******************************************************************************
1113 * DdeCreateStringHandleW [USER32.@] Creates handle to identify string
1116 * idInst [I] Instance identifier
1117 * psz [I] Pointer to string
1118 * codepage [I] Code page identifier
1120 * Success: String handle
1123 HSZ WINAPI
DdeCreateStringHandleW(DWORD idInst
, LPCWSTR psz
, INT codepage
)
1125 WDML_INSTANCE
* pInstance
;
1128 pInstance
= WDML_GetInstance(idInst
);
1131 if (codepage
== 0) codepage
= CP_WINUNICODE
;
1132 hsz
= WDML_CreateString(pInstance
, psz
, codepage
);
1138 /*****************************************************************
1139 * DdeFreeStringHandle (USER32.@)
1144 BOOL WINAPI
DdeFreeStringHandle(DWORD idInst
, HSZ hsz
)
1146 WDML_INSTANCE
* pInstance
;
1149 TRACE("(%d,%p):\n", idInst
, hsz
);
1151 /* First check instance
1153 pInstance
= WDML_GetInstance(idInst
);
1155 ret
= WDML_DecHSZ(pInstance
, hsz
);
1160 /*****************************************************************
1161 * DdeKeepStringHandle (USER32.@)
1167 BOOL WINAPI
DdeKeepStringHandle(DWORD idInst
, HSZ hsz
)
1169 WDML_INSTANCE
* pInstance
;
1172 TRACE("(%d,%p):\n", idInst
, hsz
);
1174 /* First check instance
1176 pInstance
= WDML_GetInstance(idInst
);
1178 ret
= WDML_IncHSZ(pInstance
, hsz
);
1183 /*****************************************************************
1184 * DdeCmpStringHandles (USER32.@)
1186 * Compares the value of two string handles. This comparison is
1187 * not case sensitive.
1190 * hsz1 [I] Handle to the first string
1191 * hsz2 [I] Handle to the second string
1194 * -1 The value of hsz1 is zero or less than hsz2
1195 * 0 The values of hsz 1 and 2 are the same or both zero.
1196 * 1 The value of hsz2 is zero of less than hsz1
1198 INT WINAPI
DdeCmpStringHandles(HSZ hsz1
, HSZ hsz2
)
1200 WCHAR psz1
[MAX_BUFFER_LEN
];
1201 WCHAR psz2
[MAX_BUFFER_LEN
];
1205 ret1
= GetAtomNameW(HSZ2ATOM(hsz1
), psz1
, MAX_BUFFER_LEN
);
1206 ret2
= GetAtomNameW(HSZ2ATOM(hsz2
), psz2
, MAX_BUFFER_LEN
);
1208 TRACE("(%p<%s> %p<%s>);\n", hsz1
, debugstr_w(psz1
), hsz2
, debugstr_w(psz2
));
1210 /* Make sure we found both strings. */
1211 if (ret1
== 0 && ret2
== 0)
1213 /* If both are not found, return both "zero strings". */
1218 /* If hsz1 is a not found, return hsz1 is "zero string". */
1223 /* If hsz2 is a not found, return hsz2 is "zero string". */
1228 /* Compare the two strings we got (case insensitive). */
1229 ret
= lstrcmpiW(psz1
, psz2
);
1230 /* Since strcmp returns any number smaller than
1231 * 0 when the first string is found to be less than
1232 * the second one we must make sure we are returning
1233 * the proper values.
1248 /* ================================================================
1250 * Data handle management
1252 * ================================================================ */
1254 /*****************************************************************
1255 * DdeCreateDataHandle (USER32.@)
1257 HDDEDATA WINAPI
DdeCreateDataHandle(DWORD idInst
, LPBYTE pSrc
, DWORD cb
, DWORD cbOff
,
1258 HSZ hszItem
, UINT wFmt
, UINT afCmd
)
1260 /* For now, we ignore idInst, hszItem.
1261 * The purpose of these arguments still need to be investigated.
1266 DDE_DATAHANDLE_HEAD
* pDdh
;
1267 WCHAR psz
[MAX_BUFFER_LEN
];
1269 if (!GetAtomNameW(HSZ2ATOM(hszItem
), psz
, MAX_BUFFER_LEN
))
1271 psz
[0] = HSZ2ATOM(hszItem
);
1275 TRACE("(%d,%p,cb %d, cbOff %d,%p <%s>,fmt %04x,%x)\n",
1276 idInst
, pSrc
, cb
, cbOff
, hszItem
, debugstr_w(psz
), wFmt
, afCmd
);
1278 if (afCmd
!= 0 && afCmd
!= HDATA_APPOWNED
)
1281 /* we use the first 4 bytes to store the size */
1282 if (!(hMem
= GlobalAlloc(GMEM_MOVEABLE
| GMEM_DDESHARE
, cb
+ cbOff
+ sizeof(DDE_DATAHANDLE_HEAD
))))
1284 ERR("GlobalAlloc failed\n");
1288 pDdh
= (DDE_DATAHANDLE_HEAD
*)GlobalLock(hMem
);
1295 pDdh
->cfFormat
= wFmt
;
1296 pDdh
->bAppOwned
= (afCmd
== HDATA_APPOWNED
);
1298 pByte
= (LPBYTE
)(pDdh
+ 1);
1301 memcpy(pByte
, pSrc
+ cbOff
, cb
);
1305 TRACE("=> %p\n", hMem
);
1306 return (HDDEDATA
)hMem
;
1309 /*****************************************************************
1311 * DdeAddData (USER32.@)
1313 HDDEDATA WINAPI
DdeAddData(HDDEDATA hData
, LPBYTE pSrc
, DWORD cb
, DWORD cbOff
)
1315 DWORD old_sz
, new_sz
;
1318 TRACE("(%p,%p,cb %d, cbOff %d)\n", hData
, pSrc
, cb
, cbOff
);
1320 pDst
= DdeAccessData(hData
, &old_sz
);
1321 if (!pDst
) return 0;
1323 new_sz
= cb
+ cbOff
;
1324 if (new_sz
> old_sz
)
1326 DdeUnaccessData(hData
);
1327 hData
= GlobalReAlloc(hData
, new_sz
+ sizeof(DDE_DATAHANDLE_HEAD
),
1328 GMEM_MOVEABLE
| GMEM_DDESHARE
);
1329 pDst
= DdeAccessData(hData
, &old_sz
);
1332 if (!pDst
) return 0;
1334 memcpy(pDst
+ cbOff
, pSrc
, cb
);
1335 DdeUnaccessData(hData
);
1339 /******************************************************************************
1340 * DdeGetData [USER32.@] Copies data from DDE object to local buffer
1344 * hData [I] Handle to DDE object
1345 * pDst [I] Pointer to destination buffer
1346 * cbMax [I] Amount of data to copy
1347 * cbOff [I] Offset to beginning of data
1350 * Size of memory object associated with handle
1352 DWORD WINAPI
DdeGetData(HDDEDATA hData
, LPBYTE pDst
, DWORD cbMax
, DWORD cbOff
)
1354 DWORD dwSize
, dwRet
;
1357 TRACE("(%p,%p,%d,%d)\n", hData
, pDst
, cbMax
, cbOff
);
1359 pByte
= DdeAccessData(hData
, &dwSize
);
1367 else if (cbOff
+ cbMax
< dwSize
)
1371 else if (cbOff
< dwSize
)
1373 dwRet
= dwSize
- cbOff
;
1379 if (pDst
&& dwRet
!= 0)
1381 memcpy(pDst
, pByte
+ cbOff
, dwRet
);
1383 DdeUnaccessData(hData
);
1392 /*****************************************************************
1393 * DdeAccessData (USER32.@)
1395 LPBYTE WINAPI
DdeAccessData(HDDEDATA hData
, LPDWORD pcbDataSize
)
1397 HGLOBAL hMem
= hData
;
1398 DDE_DATAHANDLE_HEAD
* pDdh
;
1400 TRACE("(%p,%p)\n", hData
, pcbDataSize
);
1402 pDdh
= (DDE_DATAHANDLE_HEAD
*)GlobalLock(hMem
);
1405 ERR("Failed on GlobalLock(%p)\n", hMem
);
1409 if (pcbDataSize
!= NULL
)
1411 *pcbDataSize
= GlobalSize(hMem
) - sizeof(DDE_DATAHANDLE_HEAD
);
1413 TRACE("=> %p (%lu) fmt %04x\n", pDdh
+ 1, GlobalSize(hMem
) - sizeof(DDE_DATAHANDLE_HEAD
), pDdh
->cfFormat
);
1414 return (LPBYTE
)(pDdh
+ 1);
1417 /*****************************************************************
1418 * DdeUnaccessData (USER32.@)
1420 BOOL WINAPI
DdeUnaccessData(HDDEDATA hData
)
1422 HGLOBAL hMem
= hData
;
1424 TRACE("(%p)\n", hData
);
1431 /*****************************************************************
1432 * DdeFreeDataHandle (USER32.@)
1434 BOOL WINAPI
DdeFreeDataHandle(HDDEDATA hData
)
1436 TRACE("(%p)\n", hData
);
1437 return GlobalFree(hData
) == 0;
1440 /******************************************************************
1445 BOOL
WDML_IsAppOwned(HDDEDATA hData
)
1447 DDE_DATAHANDLE_HEAD
* pDdh
;
1450 pDdh
= (DDE_DATAHANDLE_HEAD
*)GlobalLock(hData
);
1453 ret
= pDdh
->bAppOwned
;
1454 GlobalUnlock(hData
);
1459 /* ================================================================
1461 * Global <=> Data handle management
1463 * ================================================================ */
1465 /* Note: we use a DDEDATA, but layout of DDEDATA, DDEADVISE and DDEPOKE structures is similar:
1467 * (bytes) (bits) comment
1468 * 0 16 bit fields for options (release, ackreq, response...)
1469 * 2 16 clipboard format
1470 * 4 ? data to be used
1472 HDDEDATA
WDML_Global2DataHandle(HGLOBAL hMem
, WINE_DDEHEAD
* p
)
1480 pDd
= GlobalLock(hMem
);
1481 size
= GlobalSize(hMem
) - sizeof(WINE_DDEHEAD
);
1484 if (p
) memcpy(p
, pDd
, sizeof(WINE_DDEHEAD
));
1485 switch (pDd
->cfFormat
)
1488 FIXME("Unsupported format (%04x) for data %p, passing raw information\n",
1489 pDd
->cfFormat
, hMem
);
1493 ret
= DdeCreateDataHandle(0, pDd
->Value
, size
, 0, 0, pDd
->cfFormat
, 0);
1496 if (size
>= sizeof(BITMAP
))
1498 BITMAP
* bmp
= (BITMAP
*)pDd
->Value
;
1499 int count
= bmp
->bmWidthBytes
* bmp
->bmHeight
* bmp
->bmPlanes
;
1500 if (size
>= sizeof(BITMAP
) + count
)
1504 if ((hbmp
= CreateBitmap(bmp
->bmWidth
, bmp
->bmHeight
,
1505 bmp
->bmPlanes
, bmp
->bmBitsPixel
,
1506 pDd
->Value
+ sizeof(BITMAP
))))
1508 ret
= DdeCreateDataHandle(0, (LPBYTE
)&hbmp
, sizeof(hbmp
),
1509 0, 0, CF_BITMAP
, 0);
1511 else ERR("Can't create bmp\n");
1515 ERR("Wrong count: %u / %d\n", size
, count
);
1517 } else ERR("No bitmap header\n");
1526 /******************************************************************
1527 * WDML_DataHandle2Global
1531 HGLOBAL
WDML_DataHandle2Global(HDDEDATA hDdeData
, BOOL fResponse
, BOOL fRelease
,
1532 BOOL fDeferUpd
, BOOL fAckReq
)
1534 DDE_DATAHANDLE_HEAD
* pDdh
;
1538 dwSize
= GlobalSize((HGLOBAL
)hDdeData
) - sizeof(DDE_DATAHANDLE_HEAD
);
1539 pDdh
= (DDE_DATAHANDLE_HEAD
*)GlobalLock((HGLOBAL
)hDdeData
);
1542 WINE_DDEHEAD
* wdh
= NULL
;
1544 switch (pDdh
->cfFormat
)
1547 FIXME("Unsupported format (%04x) for data %p, passing raw information\n",
1548 pDdh
->cfFormat
, hDdeData
);
1552 hMem
= GlobalAlloc(GMEM_MOVEABLE
| GMEM_DDESHARE
, sizeof(WINE_DDEHEAD
) + dwSize
);
1553 if (hMem
&& (wdh
= GlobalLock(hMem
)))
1555 memcpy(wdh
+ 1, pDdh
+ 1, dwSize
);
1559 if (dwSize
>= sizeof(HBITMAP
))
1563 HBITMAP hbmp
= *(HBITMAP
*)(pDdh
+ 1);
1565 if (GetObjectW(hbmp
, sizeof(bmp
), &bmp
))
1567 count
= bmp
.bmWidthBytes
* bmp
.bmHeight
;
1568 hMem
= GlobalAlloc(GMEM_MOVEABLE
| GMEM_DDESHARE
,
1569 sizeof(WINE_DDEHEAD
) + sizeof(bmp
) + count
);
1570 if (hMem
&& (wdh
= GlobalLock(hMem
)))
1572 memcpy(wdh
+ 1, &bmp
, sizeof(bmp
));
1573 GetBitmapBits(hbmp
, count
, ((char*)(wdh
+ 1)) + sizeof(bmp
));
1582 wdh
->fResponse
= fResponse
;
1583 wdh
->fRelease
= fRelease
;
1584 wdh
->fDeferUpd
= fDeferUpd
;
1585 wdh
->fAckReq
= fAckReq
;
1586 wdh
->cfFormat
= pDdh
->cfFormat
;
1589 GlobalUnlock((HGLOBAL
)hDdeData
);
1595 /* ================================================================
1599 * ================================================================ */
1601 /******************************************************************
1606 WDML_SERVER
* WDML_AddServer(WDML_INSTANCE
* pInstance
, HSZ hszService
, HSZ hszTopic
)
1608 static const WCHAR fmtW
[] = {'%','s','(','0','x','%','0','8','l','x',')',0};
1609 WDML_SERVER
* pServer
;
1613 pServer
= HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_SERVER
));
1614 if (pServer
== NULL
) return NULL
;
1616 pServer
->hszService
= hszService
;
1617 WDML_IncHSZ(pInstance
, hszService
);
1619 DdeQueryStringW(pInstance
->instanceID
, hszService
, buf1
, 256, CP_WINUNICODE
);
1620 snprintfW(buf2
, 256, fmtW
, buf1
, GetCurrentProcessId());
1621 pServer
->hszServiceSpec
= DdeCreateStringHandleW(pInstance
->instanceID
, buf2
, CP_WINUNICODE
);
1623 pServer
->atomService
= WDML_MakeAtomFromHsz(pServer
->hszService
);
1624 pServer
->atomServiceSpec
= WDML_MakeAtomFromHsz(pServer
->hszServiceSpec
);
1626 pServer
->filterOn
= TRUE
;
1628 pServer
->next
= pInstance
->servers
;
1629 pInstance
->servers
= pServer
;
1633 /******************************************************************
1638 void WDML_RemoveServer(WDML_INSTANCE
* pInstance
, HSZ hszService
, HSZ hszTopic
)
1640 WDML_SERVER
* pPrev
= NULL
;
1641 WDML_SERVER
* pServer
= NULL
;
1643 WDML_CONV
* pConvNext
;
1645 pServer
= pInstance
->servers
;
1647 while (pServer
!= NULL
)
1649 if (DdeCmpStringHandles(pServer
->hszService
, hszService
) == 0)
1651 WDML_BroadcastDDEWindows(WDML_szEventClass
, WM_WDML_UNREGISTER
,
1652 pServer
->atomService
, pServer
->atomServiceSpec
);
1653 /* terminate all conversations for given topic */
1654 for (pConv
= pInstance
->convs
[WDML_SERVER_SIDE
]; pConv
!= NULL
; pConv
= pConvNext
)
1656 pConvNext
= pConv
->next
;
1657 if (DdeCmpStringHandles(pConv
->hszService
, hszService
) == 0)
1659 WDML_RemoveConv(pConv
, WDML_SERVER_SIDE
);
1660 /* don't care about return code (whether client window is present or not) */
1661 PostMessageW(pConv
->hwndClient
, WM_DDE_TERMINATE
, (WPARAM
)pConv
->hwndServer
, 0);
1664 if (pServer
== pInstance
->servers
)
1666 pInstance
->servers
= pServer
->next
;
1670 pPrev
->next
= pServer
->next
;
1673 DestroyWindow(pServer
->hwndServer
);
1674 WDML_DecHSZ(pInstance
, pServer
->hszServiceSpec
);
1675 WDML_DecHSZ(pInstance
, pServer
->hszService
);
1677 GlobalDeleteAtom(pServer
->atomService
);
1678 GlobalDeleteAtom(pServer
->atomServiceSpec
);
1680 HeapFree(GetProcessHeap(), 0, pServer
);
1685 pServer
= pServer
->next
;
1689 /*****************************************************************************
1692 * generic routine to return a pointer to the relevant ServiceNode
1693 * for a given service name, or NULL if the entry does not exist
1696 WDML_SERVER
* WDML_FindServer(WDML_INSTANCE
* pInstance
, HSZ hszService
, HSZ hszTopic
)
1698 WDML_SERVER
* pServer
;
1700 for (pServer
= pInstance
->servers
; pServer
!= NULL
; pServer
= pServer
->next
)
1702 if (hszService
== pServer
->hszService
)
1707 TRACE("Service name missing\n");
1711 /* ================================================================
1713 * Conversation management
1715 * ================================================================ */
1717 /******************************************************************
1722 WDML_CONV
* WDML_AddConv(WDML_INSTANCE
* pInstance
, WDML_SIDE side
,
1723 HSZ hszService
, HSZ hszTopic
, HWND hwndClient
, HWND hwndServer
)
1727 /* no conversation yet, add it */
1728 pConv
= HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_CONV
));
1729 if (!pConv
) return NULL
;
1731 pConv
->instance
= pInstance
;
1732 WDML_IncHSZ(pInstance
, pConv
->hszService
= hszService
);
1733 WDML_IncHSZ(pInstance
, pConv
->hszTopic
= hszTopic
);
1734 pConv
->magic
= WDML_CONV_MAGIC
;
1735 pConv
->hwndServer
= hwndServer
;
1736 pConv
->hwndClient
= hwndClient
;
1737 pConv
->transactions
= NULL
;
1739 pConv
->wStatus
= (side
== WDML_CLIENT_SIDE
) ? ST_CLIENT
: 0L;
1740 pConv
->wStatus
|= pInstance
->wStatus
;
1741 /* check if both side of the conversation are of the same instance */
1742 if (GetWindowThreadProcessId(hwndClient
, NULL
) == GetWindowThreadProcessId(hwndServer
, NULL
) &&
1743 WDML_GetInstanceFromWnd(hwndClient
) == WDML_GetInstanceFromWnd(hwndServer
))
1745 pConv
->wStatus
|= ST_ISSELF
;
1747 pConv
->wConvst
= XST_NULL
;
1749 pConv
->next
= pInstance
->convs
[side
];
1750 pInstance
->convs
[side
] = pConv
;
1752 TRACE("pConv->wStatus %04x\n", pConv
->wStatus
);
1757 /******************************************************************
1762 WDML_CONV
* WDML_FindConv(WDML_INSTANCE
* pInstance
, WDML_SIDE side
,
1763 HSZ hszService
, HSZ hszTopic
)
1765 WDML_CONV
* pCurrent
= NULL
;
1767 for (pCurrent
= pInstance
->convs
[side
]; pCurrent
!= NULL
; pCurrent
= pCurrent
->next
)
1769 if (DdeCmpStringHandles(pCurrent
->hszService
, hszService
) == 0 &&
1770 DdeCmpStringHandles(pCurrent
->hszTopic
, hszTopic
) == 0)
1779 /******************************************************************
1784 void WDML_RemoveConv(WDML_CONV
* pRef
, WDML_SIDE side
)
1786 WDML_CONV
* pPrev
= NULL
;
1787 WDML_CONV
* pCurrent
;
1789 WDML_XACT
* pXActNext
;
1795 /* remove any pending transaction */
1796 for (pXAct
= pRef
->transactions
; pXAct
!= NULL
; pXAct
= pXActNext
)
1798 pXActNext
= pXAct
->next
;
1799 WDML_FreeTransaction(pRef
->instance
, pXAct
, TRUE
);
1802 WDML_RemoveAllLinks(pRef
->instance
, pRef
, side
);
1804 /* FIXME: should we keep the window around ? it seems so (at least on client side
1805 * to let QueryConvInfo work after conv termination, but also to implement
1808 /* destroy conversation window, but first remove pConv from hWnd.
1809 * this would help the wndProc do appropriate handling upon a WM_DESTROY message
1811 hWnd
= (side
== WDML_CLIENT_SIDE
) ? pRef
->hwndClient
: pRef
->hwndServer
;
1812 SetWindowLongPtrW(hWnd
, GWL_WDML_CONVERSATION
, 0);
1814 DestroyWindow((side
== WDML_CLIENT_SIDE
) ? pRef
->hwndClient
: pRef
->hwndServer
);
1816 WDML_DecHSZ(pRef
->instance
, pRef
->hszService
);
1817 WDML_DecHSZ(pRef
->instance
, pRef
->hszTopic
);
1819 for (pCurrent
= pRef
->instance
->convs
[side
]; pCurrent
!= NULL
; pCurrent
= (pPrev
= pCurrent
)->next
)
1821 if (pCurrent
== pRef
)
1823 if (pCurrent
== pRef
->instance
->convs
[side
])
1825 pRef
->instance
->convs
[side
] = pCurrent
->next
;
1829 pPrev
->next
= pCurrent
->next
;
1831 pCurrent
->magic
= 0;
1832 HeapFree(GetProcessHeap(), 0, pCurrent
);
1838 /******************************************************************
1839 * WDML_EnableCallback
1841 static BOOL
WDML_EnableCallback(WDML_CONV
*pConv
, UINT wCmd
)
1843 if (wCmd
== EC_DISABLE
)
1845 pConv
->wStatus
|= ST_BLOCKED
;
1846 TRACE("EC_DISABLE: conv %p status flags %04x\n", pConv
, pConv
->wStatus
);
1850 if (wCmd
== EC_QUERYWAITING
)
1851 return pConv
->transactions
? TRUE
: FALSE
;
1853 if (wCmd
!= EC_ENABLEALL
&& wCmd
!= EC_ENABLEONE
)
1855 FIXME("Unknown command code %04x\n", wCmd
);
1859 if (wCmd
== EC_ENABLEALL
)
1861 pConv
->wStatus
&= ~ST_BLOCKED
;
1862 TRACE("EC_ENABLEALL: conv %p status flags %04x\n", pConv
, pConv
->wStatus
);
1865 while (pConv
->transactions
)
1867 WDML_XACT
*pXAct
= pConv
->transactions
;
1869 if (pConv
->wStatus
& ST_CLIENT
)
1871 /* transaction should be in the queue until handled */
1872 WDML_ClientHandle(pConv
, pXAct
, 0, NULL
);
1873 WDML_UnQueueTransaction(pConv
, pXAct
);
1877 /* transaction should be removed from the queue before handling */
1878 WDML_UnQueueTransaction(pConv
, pXAct
);
1879 WDML_ServerHandle(pConv
, pXAct
);
1882 WDML_FreeTransaction(pConv
->instance
, pXAct
, TRUE
);
1884 if (wCmd
== EC_ENABLEONE
) break;
1889 /*****************************************************************
1890 * DdeEnableCallback (USER32.@)
1892 BOOL WINAPI
DdeEnableCallback(DWORD idInst
, HCONV hConv
, UINT wCmd
)
1897 TRACE("(%d, %p, %04x)\n", idInst
, hConv
, wCmd
);
1901 pConv
= WDML_GetConv(hConv
, TRUE
);
1903 if (pConv
&& pConv
->instance
->instanceID
== idInst
)
1904 ret
= WDML_EnableCallback(pConv
, wCmd
);
1908 WDML_INSTANCE
*pInstance
= WDML_GetInstance(idInst
);
1913 TRACE("adding flags %04x to instance %p\n", wCmd
, pInstance
);
1914 pInstance
->wStatus
|= wCmd
;
1916 if (wCmd
== EC_DISABLE
)
1918 pInstance
->wStatus
|= ST_BLOCKED
;
1919 TRACE("EC_DISABLE: inst %p status flags %04x\n", pInstance
, pInstance
->wStatus
);
1921 else if (wCmd
== EC_ENABLEALL
)
1923 pInstance
->wStatus
&= ~ST_BLOCKED
;
1924 TRACE("EC_ENABLEALL: inst %p status flags %04x\n", pInstance
, pInstance
->wStatus
);
1929 for (pConv
= pInstance
->convs
[WDML_CLIENT_SIDE
]; pConv
!= NULL
; pConv
= pConv
->next
)
1931 ret
= WDML_EnableCallback(pConv
, wCmd
);
1932 if (ret
&& wCmd
== EC_QUERYWAITING
) break;
1939 /******************************************************************
1944 WDML_CONV
* WDML_GetConv(HCONV hConv
, BOOL checkConnected
)
1946 WDML_CONV
* pConv
= (WDML_CONV
*)hConv
;
1948 /* FIXME: should do better checking */
1949 if (pConv
== NULL
|| pConv
->magic
!= WDML_CONV_MAGIC
) return NULL
;
1951 if (!pConv
->instance
|| pConv
->instance
->threadID
!= GetCurrentThreadId())
1953 WARN("wrong thread ID\n");
1954 pConv
->instance
->lastError
= DMLERR_INVALIDPARAMETER
; /* FIXME: check */
1958 if (checkConnected
&& !(pConv
->wStatus
& ST_CONNECTED
))
1960 WARN("found conv but ain't connected\n");
1961 pConv
->instance
->lastError
= DMLERR_NO_CONV_ESTABLISHED
;
1968 /******************************************************************
1969 * WDML_GetConvFromWnd
1973 WDML_CONV
* WDML_GetConvFromWnd(HWND hWnd
)
1975 return (WDML_CONV
*)GetWindowLongPtrW(hWnd
, GWL_WDML_CONVERSATION
);
1978 /******************************************************************
1983 BOOL
WDML_PostAck(WDML_CONV
* pConv
, WDML_SIDE side
, WORD appRetCode
,
1984 BOOL fBusy
, BOOL fAck
, UINT_PTR pmt
, LPARAM lParam
, UINT oldMsg
)
1989 if (side
== WDML_SERVER_SIDE
)
1991 from
= pConv
->hwndServer
;
1992 to
= pConv
->hwndClient
;
1996 to
= pConv
->hwndServer
;
1997 from
= pConv
->hwndClient
;
2000 ddeAck
.bAppReturnCode
= appRetCode
;
2001 ddeAck
.reserved
= 0;
2002 ddeAck
.fBusy
= fBusy
;
2005 TRACE("Posting a %s ack\n", ddeAck
.fAck
? "positive" : "negative");
2007 lParam
= (lParam
) ? ReuseDDElParam(lParam
, oldMsg
, WM_DDE_ACK
, *(WORD
*)&ddeAck
, pmt
) :
2008 PackDDElParam(WM_DDE_ACK
, *(WORD
*)&ddeAck
, pmt
);
2009 if (!PostMessageW(to
, WM_DDE_ACK
, (WPARAM
)from
, lParam
))
2011 pConv
->wStatus
&= ~ST_CONNECTED
;
2012 pConv
->instance
->lastError
= DMLERR_POSTMSG_FAILED
;
2013 FreeDDElParam(WM_DDE_ACK
, lParam
);
2019 /*****************************************************************
2020 * DdeSetUserHandle (USER32.@)
2022 BOOL WINAPI
DdeSetUserHandle(HCONV hConv
, DWORD id
, DWORD hUser
)
2026 pConv
= WDML_GetConv(hConv
, FALSE
);
2032 pConv
->hUser
= hUser
;
2038 pXAct
= WDML_FindTransaction(pConv
, id
);
2041 pXAct
->hUser
= hUser
;
2045 pConv
->instance
->lastError
= DMLERR_UNFOUND_QUEUE_ID
;
2052 /******************************************************************
2053 * WDML_GetLocalConvInfo
2057 static BOOL
WDML_GetLocalConvInfo(WDML_CONV
* pConv
, CONVINFO
* ci
, DWORD id
)
2063 ci
->hConvPartner
= (pConv
->wStatus
& ST_ISLOCAL
) ? (HCONV
)((ULONG_PTR
)pConv
| 1) : 0;
2064 ci
->hszSvcPartner
= pConv
->hszService
;
2065 ci
->hszServiceReq
= pConv
->hszService
; /* FIXME: they shouldn't be the same, should they ? */
2066 ci
->hszTopic
= pConv
->hszTopic
;
2067 ci
->wStatus
= pConv
->wStatus
;
2069 side
= (pConv
->wStatus
& ST_CLIENT
) ? WDML_CLIENT_SIDE
: WDML_SERVER_SIDE
;
2071 for (pLink
= pConv
->instance
->links
[side
]; pLink
!= NULL
; pLink
= pLink
->next
)
2073 if (pLink
->hConv
== (HCONV
)pConv
)
2075 ci
->wStatus
|= ST_ADVISE
;
2080 /* FIXME: non handled status flags:
2086 ci
->wConvst
= pConv
->wConvst
; /* FIXME */
2088 ci
->wLastError
= 0; /* FIXME: note it's not the instance last error */
2090 ci
->ConvCtxt
= pConv
->convContext
;
2091 if (ci
->wStatus
& ST_CLIENT
)
2093 ci
->hwnd
= pConv
->hwndClient
;
2094 ci
->hwndPartner
= pConv
->hwndServer
;
2098 ci
->hwnd
= pConv
->hwndServer
;
2099 ci
->hwndPartner
= pConv
->hwndClient
;
2103 ci
->hUser
= pConv
->hUser
;
2112 pXAct
= WDML_FindTransaction(pConv
, id
);
2115 ci
->hUser
= pXAct
->hUser
;
2116 ci
->hszItem
= pXAct
->hszItem
;
2117 ci
->wFmt
= pXAct
->wFmt
;
2118 ci
->wType
= pXAct
->wType
;
2123 pConv
->instance
->lastError
= DMLERR_UNFOUND_QUEUE_ID
;
2129 /******************************************************************
2130 * DdeQueryConvInfo (USER32.@)
2132 * FIXME: Set last DDE error on failure.
2134 UINT WINAPI
DdeQueryConvInfo(HCONV hConv
, DWORD id
, PCONVINFO lpConvInfo
)
2136 UINT ret
= lpConvInfo
->cb
;
2140 TRACE("(%p,%x,%p)\n", hConv
, id
, lpConvInfo
);
2144 FIXME("hConv is NULL\n");
2148 pConv
= WDML_GetConv(hConv
, FALSE
);
2151 if (!WDML_GetLocalConvInfo(pConv
, &ci
, id
))
2156 if ((ULONG_PTR
)hConv
& 1)
2158 pConv
= WDML_GetConv((HCONV
)((ULONG_PTR
)hConv
& ~1), FALSE
);
2160 FIXME("Request on remote conversation information is not implemented yet\n");
2166 memcpy(lpConvInfo
, &ci
, min((size_t)lpConvInfo
->cb
, sizeof(ci
)));
2170 /* ================================================================
2172 * Link (hot & warm) management
2174 * ================================================================ */
2176 /******************************************************************
2181 void WDML_AddLink(WDML_INSTANCE
* pInstance
, HCONV hConv
, WDML_SIDE side
,
2182 UINT wType
, HSZ hszItem
, UINT wFmt
)
2186 pLink
= HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_LINK
));
2193 pLink
->hConv
= hConv
;
2194 pLink
->transactionType
= wType
;
2195 WDML_IncHSZ(pInstance
, pLink
->hszItem
= hszItem
);
2197 pLink
->next
= pInstance
->links
[side
];
2198 pInstance
->links
[side
] = pLink
;
2201 /******************************************************************
2206 void WDML_RemoveLink(WDML_INSTANCE
* pInstance
, HCONV hConv
, WDML_SIDE side
,
2207 HSZ hszItem
, UINT uFmt
)
2209 WDML_LINK
* pPrev
= NULL
;
2210 WDML_LINK
* pCurrent
= NULL
;
2212 pCurrent
= pInstance
->links
[side
];
2214 while (pCurrent
!= NULL
)
2216 if (pCurrent
->hConv
== hConv
&&
2217 DdeCmpStringHandles(pCurrent
->hszItem
, hszItem
) == 0 &&
2218 pCurrent
->uFmt
== uFmt
)
2220 if (pCurrent
== pInstance
->links
[side
])
2222 pInstance
->links
[side
] = pCurrent
->next
;
2226 pPrev
->next
= pCurrent
->next
;
2229 WDML_DecHSZ(pInstance
, pCurrent
->hszItem
);
2230 HeapFree(GetProcessHeap(), 0, pCurrent
);
2235 pCurrent
= pCurrent
->next
;
2239 /* this function is called to remove all links related to the conv.
2240 It should be called from both client and server when terminating
2243 /******************************************************************
2244 * WDML_RemoveAllLinks
2248 void WDML_RemoveAllLinks(WDML_INSTANCE
* pInstance
, WDML_CONV
* pConv
, WDML_SIDE side
)
2250 WDML_LINK
* pPrev
= NULL
;
2251 WDML_LINK
* pCurrent
= NULL
;
2252 WDML_LINK
* pNext
= NULL
;
2254 pCurrent
= pInstance
->links
[side
];
2256 while (pCurrent
!= NULL
)
2258 if (pCurrent
->hConv
== (HCONV
)pConv
)
2260 if (pCurrent
== pInstance
->links
[side
])
2262 pInstance
->links
[side
] = pCurrent
->next
;
2263 pNext
= pCurrent
->next
;
2267 pPrev
->next
= pCurrent
->next
;
2268 pNext
= pCurrent
->next
;
2271 WDML_DecHSZ(pInstance
, pCurrent
->hszItem
);
2273 HeapFree(GetProcessHeap(), 0, pCurrent
);
2280 pCurrent
= pCurrent
->next
;
2289 /******************************************************************
2294 WDML_LINK
* WDML_FindLink(WDML_INSTANCE
* pInstance
, HCONV hConv
, WDML_SIDE side
,
2295 HSZ hszItem
, BOOL use_fmt
, UINT uFmt
)
2297 WDML_LINK
* pCurrent
= NULL
;
2299 for (pCurrent
= pInstance
->links
[side
]; pCurrent
!= NULL
; pCurrent
= pCurrent
->next
)
2301 /* we don't need to check for transaction type as it can be altered */
2303 if (pCurrent
->hConv
== hConv
&&
2304 DdeCmpStringHandles(pCurrent
->hszItem
, hszItem
) == 0 &&
2305 (!use_fmt
|| pCurrent
->uFmt
== uFmt
))
2315 /* ================================================================
2317 * Transaction management
2319 * ================================================================ */
2321 /******************************************************************
2322 * WDML_AllocTransaction
2324 * Alloc a transaction structure for handling the message ddeMsg
2326 WDML_XACT
* WDML_AllocTransaction(WDML_INSTANCE
* pInstance
, UINT ddeMsg
,
2327 UINT wFmt
, HSZ hszItem
)
2330 static WORD tid
= 1; /* FIXME: wrap around */
2332 pXAct
= HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_XACT
));
2335 pInstance
->lastError
= DMLERR_MEMORY_ERROR
;
2339 pXAct
->xActID
= tid
++;
2340 pXAct
->ddeMsg
= ddeMsg
;
2341 pXAct
->hDdeData
= 0;
2346 if ((pXAct
->hszItem
= hszItem
)) WDML_IncHSZ(pInstance
, pXAct
->hszItem
);
2354 /******************************************************************
2355 * WDML_QueueTransaction
2357 * Adds a transaction to the list of transaction
2359 void WDML_QueueTransaction(WDML_CONV
* pConv
, WDML_XACT
* pXAct
)
2363 /* advance to last in queue */
2364 for (pt
= &pConv
->transactions
; *pt
!= NULL
; pt
= &(*pt
)->next
);
2368 /******************************************************************
2369 * WDML_UnQueueTransaction
2373 BOOL
WDML_UnQueueTransaction(WDML_CONV
* pConv
, WDML_XACT
* pXAct
)
2377 for (pt
= &pConv
->transactions
; *pt
; pt
= &(*pt
)->next
)
2388 /******************************************************************
2389 * WDML_FreeTransaction
2393 void WDML_FreeTransaction(WDML_INSTANCE
* pInstance
, WDML_XACT
* pXAct
, BOOL doFreePmt
)
2395 /* free pmt(s) in pXAct too. check against one for not deleting TRUE return values */
2396 if (doFreePmt
&& (ULONG_PTR
)pXAct
->hMem
> 1)
2398 GlobalFree(pXAct
->hMem
);
2400 if (pXAct
->hszItem
) WDML_DecHSZ(pInstance
, pXAct
->hszItem
);
2402 HeapFree(GetProcessHeap(), 0, pXAct
);
2405 /******************************************************************
2406 * WDML_FindTransaction
2410 WDML_XACT
* WDML_FindTransaction(WDML_CONV
* pConv
, DWORD tid
)
2415 for (pXAct
= pConv
->transactions
; pXAct
; pXAct
= pXAct
->next
)
2417 if (pXAct
->xActID
== tid
)
2423 /* ================================================================
2425 * Information broadcast across DDEML implementations
2427 * ================================================================ */
2429 struct tagWDML_BroadcastPmt
2437 /******************************************************************
2438 * WDML_BroadcastEnumProc
2442 static BOOL CALLBACK
WDML_BroadcastEnumProc(HWND hWnd
, LPARAM lParam
)
2444 struct tagWDML_BroadcastPmt
* s
= (struct tagWDML_BroadcastPmt
*)lParam
;
2447 if (GetClassNameW(hWnd
, buffer
, 128) > 0 &&
2448 lstrcmpiW(buffer
, s
->clsName
) == 0)
2450 PostMessageW(hWnd
, s
->uMsg
, s
->wParam
, s
->lParam
);
2455 /******************************************************************
2456 * WDML_BroadcastDDEWindows
2460 void WDML_BroadcastDDEWindows(LPCWSTR clsName
, UINT uMsg
, WPARAM wParam
, LPARAM lParam
)
2462 struct tagWDML_BroadcastPmt s
;
2464 s
.clsName
= clsName
;
2468 EnumWindows(WDML_BroadcastEnumProc
, (LPARAM
)&s
);