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
36 #include "dde_private.h"
37 #include "wine/debug.h"
39 WINE_DEFAULT_DEBUG_CHANNEL(ddeml
);
41 /* convert between ATOM and HSZ avoiding compiler warnings */
42 #define ATOM2HSZ(atom) ((HSZ) (ULONG_PTR)(atom))
43 #define HSZ2ATOM(hsz) ((ATOM) (ULONG_PTR)(hsz))
45 static WDML_INSTANCE
* WDML_InstanceList
= NULL
;
46 static LONG WDML_MaxInstanceID
= 0; /* OK for present, have to worry about wrap-around later */
47 const WCHAR WDML_szEventClass
[] = L
"WineDdeEventClass";
49 /* protection for instance list */
50 static CRITICAL_SECTION WDML_CritSect
;
51 static CRITICAL_SECTION_DEBUG critsect_debug
=
54 { &critsect_debug
.ProcessLocksList
, &critsect_debug
.ProcessLocksList
},
55 0, 0, { (DWORD_PTR
)(__FILE__
": WDML_CritSect") }
57 static CRITICAL_SECTION WDML_CritSect
= { &critsect_debug
, -1, 0, 0, 0, 0 };
59 /* ================================================================
61 * Pure DDE (non DDEML) management
63 * ================================================================ */
66 /*****************************************************************
67 * PackDDElParam (USER32.@)
72 LPARAM WINAPI
PackDDElParam(UINT msg
, UINT_PTR uiLo
, UINT_PTR uiHi
)
83 if (!(hMem
= GlobalAlloc(GMEM_DDESHARE
, sizeof(UINT_PTR
) * 2)))
85 ERR("GlobalAlloc failed\n");
88 if (!(params
= GlobalLock(hMem
)))
90 ERR("GlobalLock failed (%p)\n", hMem
);
102 return MAKELONG(uiLo
, uiHi
);
107 /*****************************************************************
108 * UnpackDDElParam (USER32.@)
114 BOOL WINAPI
UnpackDDElParam(UINT msg
, LPARAM lParam
,
115 PUINT_PTR uiLo
, PUINT_PTR uiHi
)
125 if (!lParam
|| !(params
= GlobalLock((HGLOBAL
)lParam
)))
131 if (uiLo
) *uiLo
= params
[0];
132 if (uiHi
) *uiHi
= params
[1];
133 GlobalUnlock( (HGLOBAL
)lParam
);
138 if (uiHi
) *uiHi
= lParam
;
142 if (uiLo
) *uiLo
= LOWORD(lParam
);
143 if (uiHi
) *uiHi
= HIWORD(lParam
);
149 /*****************************************************************
150 * FreeDDElParam (USER32.@)
156 BOOL WINAPI
FreeDDElParam(UINT msg
, LPARAM lParam
)
164 /* first check if it's a global handle */
165 if (!GlobalHandle( (LPVOID
)lParam
)) return TRUE
;
166 return !GlobalFree( (HGLOBAL
)lParam
);
174 /*****************************************************************
175 * ReuseDDElParam (USER32.@)
180 LPARAM WINAPI
ReuseDDElParam(LPARAM lParam
, UINT msgIn
, UINT msgOut
,
181 UINT_PTR uiLo
, UINT_PTR uiHi
)
197 if (!lParam
) return 0;
198 if (!(params
= GlobalLock( (HGLOBAL
)lParam
)))
200 ERR("GlobalLock failed\n");
205 TRACE("Reusing pack %08lx %08lx\n", uiLo
, uiHi
);
206 GlobalUnlock( (HGLOBAL
)lParam
);
210 FreeDDElParam( msgIn
, lParam
);
214 FreeDDElParam( msgIn
, lParam
);
215 return MAKELPARAM(uiLo
, uiHi
);
219 return PackDDElParam( msgOut
, uiLo
, uiHi
);
223 /*****************************************************************
224 * ImpersonateDdeClientWindow (USER32.@)
227 * hWndClient [I] handle to DDE client window
228 * hWndServer [I] handle to DDE server window
230 BOOL WINAPI
ImpersonateDdeClientWindow(HWND hWndClient
, HWND hWndServer
)
232 FIXME("(%p %p): stub\n", hWndClient
, hWndServer
);
236 /*****************************************************************
237 * DdeSetQualityOfService (USER32.@)
240 BOOL WINAPI
DdeSetQualityOfService(HWND hwndClient
, const SECURITY_QUALITY_OF_SERVICE
*pqosNew
,
241 PSECURITY_QUALITY_OF_SERVICE pqosPrev
)
243 FIXME("(%p %p %p): stub\n", hwndClient
, pqosNew
, pqosPrev
);
247 /* ================================================================
249 * WDML Error management
251 * ================================================================ */
253 /******************************************************************************
254 * DdeGetLastError [USER32.@] Gets most recent error code
257 * idInst [I] Instance identifier
262 UINT WINAPI
DdeGetLastError(DWORD idInst
)
265 WDML_INSTANCE
* pInstance
;
267 /* First check instance
269 pInstance
= WDML_GetInstance(idInst
);
270 if (pInstance
== NULL
)
272 error_code
= DMLERR_INVALIDPARAMETER
;
276 error_code
= pInstance
->lastError
;
277 pInstance
->lastError
= 0;
283 /******************************************************************
284 * WDML_SetAllLastError
288 static void WDML_SetAllLastError(DWORD lastError
)
291 WDML_INSTANCE
* pInstance
;
292 threadID
= GetCurrentThreadId();
293 pInstance
= WDML_InstanceList
;
296 if (pInstance
->threadID
== threadID
)
297 pInstance
->lastError
= lastError
;
298 pInstance
= pInstance
->next
;
302 /* ================================================================
306 * ================================================================ */
309 /******************************************************************
314 static HSZNode
* WDML_FindNode(WDML_INSTANCE
* pInstance
, HSZ hsz
)
318 if (pInstance
== NULL
) return NULL
;
320 for (pNode
= pInstance
->nodeList
; pNode
!= NULL
; pNode
= pNode
->next
)
322 if (pNode
->hsz
== hsz
) break;
324 if (!pNode
) WARN("HSZ %p not found\n", hsz
);
328 /******************************************************************
329 * WDML_MakeAtomFromHsz
331 * Creates a global atom from an existing HSZ
332 * Generally used before sending an HSZ as an atom to a remote app
334 ATOM
WDML_MakeAtomFromHsz(HSZ hsz
)
336 WCHAR nameBuffer
[MAX_BUFFER_LEN
];
338 if (GetAtomNameW(HSZ2ATOM(hsz
), nameBuffer
, MAX_BUFFER_LEN
))
339 return GlobalAddAtomW(nameBuffer
);
340 WARN("HSZ %p not found\n", hsz
);
344 /******************************************************************
345 * WDML_MakeHszFromAtom
347 * Creates a HSZ from an existing global atom
348 * Generally used while receiving a global atom and transforming it
351 HSZ
WDML_MakeHszFromAtom(const WDML_INSTANCE
* pInstance
, ATOM atom
)
353 WCHAR nameBuffer
[MAX_BUFFER_LEN
];
355 if (!atom
) return NULL
;
357 if (GlobalGetAtomNameW(atom
, nameBuffer
, MAX_BUFFER_LEN
))
359 TRACE("%x => %s\n", atom
, debugstr_w(nameBuffer
));
360 return DdeCreateStringHandleW(pInstance
->instanceID
, nameBuffer
, CP_WINUNICODE
);
362 WARN("ATOM 0x%x not found\n", atom
);
366 /******************************************************************
371 BOOL
WDML_IncHSZ(WDML_INSTANCE
* pInstance
, HSZ hsz
)
375 pNode
= WDML_FindNode(pInstance
, hsz
);
376 if (!pNode
) return FALSE
;
382 /******************************************************************************
383 * WDML_DecHSZ (INTERNAL)
385 * Decrease the ref count of an HSZ. If it reaches 0, the node is removed from the list
387 * Returns -1 is the HSZ isn't found, otherwise it's the current (after --) of the ref count
389 BOOL
WDML_DecHSZ(WDML_INSTANCE
* pInstance
, HSZ hsz
)
391 HSZNode
* pPrev
= NULL
;
394 for (pCurrent
= pInstance
->nodeList
; pCurrent
!= NULL
; pCurrent
= (pPrev
= pCurrent
)->next
)
396 /* If we found the node we were looking for and its ref count is one,
399 if (pCurrent
->hsz
== hsz
)
401 if (--pCurrent
->refCount
== 0)
403 if (pCurrent
== pInstance
->nodeList
)
405 pInstance
->nodeList
= pCurrent
->next
;
409 pPrev
->next
= pCurrent
->next
;
411 HeapFree(GetProcessHeap(), 0, pCurrent
);
412 DeleteAtom(HSZ2ATOM(hsz
));
417 WARN("HSZ %p not found\n", hsz
);
422 /******************************************************************************
423 * WDML_FreeAllHSZ (INTERNAL)
425 * Frees up all the strings still allocated in the list and
426 * remove all the nodes from the list of HSZ nodes.
428 static void WDML_FreeAllHSZ(WDML_INSTANCE
* pInstance
)
430 /* Free any strings created in this instance.
432 while (pInstance
->nodeList
!= NULL
)
434 DdeFreeStringHandle(pInstance
->instanceID
, pInstance
->nodeList
->hsz
);
438 /******************************************************************************
439 * InsertHSZNode (INTERNAL)
441 * Insert a node to the head of the list.
443 static void WDML_InsertHSZNode(WDML_INSTANCE
* pInstance
, HSZ hsz
)
447 HSZNode
* pNew
= NULL
;
448 /* Create a new node for this HSZ.
450 pNew
= HeapAlloc(GetProcessHeap(), 0, sizeof(HSZNode
));
454 pNew
->next
= pInstance
->nodeList
;
456 pInstance
->nodeList
= pNew
;
460 ERR("Primary HSZ Node allocation failed - out of memory\n");
465 /******************************************************************
470 static int WDML_QueryString(WDML_INSTANCE
* pInstance
, HSZ hsz
, LPVOID ptr
, DWORD cchMax
,
473 WCHAR pString
[MAX_BUFFER_LEN
];
475 /* If psz is null, we have to return only the length
481 cchMax
= MAX_BUFFER_LEN
;
484 /* if there is no input windows returns a NULL string */
495 ret
= GetAtomNameA(HSZ2ATOM(hsz
), ptr
, cchMax
);
498 ret
= GetAtomNameW(HSZ2ATOM(hsz
), ptr
, cchMax
);
501 ERR("Unknown code page %d\n", codepage
);
507 /*****************************************************************
508 * DdeQueryStringA [USER32.@]
510 DWORD WINAPI
DdeQueryStringA(DWORD idInst
, HSZ hsz
, LPSTR psz
, DWORD cchMax
, INT iCodePage
)
513 WDML_INSTANCE
* pInstance
;
515 TRACE("(%d, %p, %p, %d, %d)\n", idInst
, hsz
, psz
, cchMax
, iCodePage
);
517 /* First check instance
519 pInstance
= WDML_GetInstance(idInst
);
520 if (pInstance
!= NULL
)
522 if (iCodePage
== 0) iCodePage
= CP_WINANSI
;
523 ret
= WDML_QueryString(pInstance
, hsz
, psz
, cchMax
, iCodePage
);
526 TRACE("returning %d (%s)\n", ret
, debugstr_a(psz
));
530 /*****************************************************************
531 * DdeQueryStringW [USER32.@]
534 DWORD WINAPI
DdeQueryStringW(DWORD idInst
, HSZ hsz
, LPWSTR psz
, DWORD cchMax
, INT iCodePage
)
537 WDML_INSTANCE
* pInstance
;
539 TRACE("(%d, %p, %p, %d, %d)\n", idInst
, hsz
, psz
, cchMax
, iCodePage
);
541 /* First check instance
543 pInstance
= WDML_GetInstance(idInst
);
544 if (pInstance
!= NULL
)
546 if (iCodePage
== 0) iCodePage
= CP_WINUNICODE
;
547 ret
= WDML_QueryString(pInstance
, hsz
, psz
, cchMax
, iCodePage
);
550 TRACE("returning %d (%s)\n", ret
, debugstr_w(psz
));
554 /******************************************************************
559 static HSZ
WDML_CreateString(WDML_INSTANCE
* pInstance
, LPCVOID ptr
, int codepage
)
566 hsz
= ATOM2HSZ(AddAtomA(ptr
));
567 TRACE("added atom %s with HSZ %p,\n", debugstr_a(ptr
), hsz
);
570 hsz
= ATOM2HSZ(AddAtomW(ptr
));
571 TRACE("added atom %s with HSZ %p,\n", debugstr_w(ptr
), hsz
);
574 ERR("Unknown code page %d\n", codepage
);
577 WDML_InsertHSZNode(pInstance
, hsz
);
581 /*****************************************************************
582 * DdeCreateStringHandleA [USER32.@]
584 * See DdeCreateStringHandleW.
586 HSZ WINAPI
DdeCreateStringHandleA(DWORD idInst
, LPCSTR psz
, INT codepage
)
589 WDML_INSTANCE
* pInstance
;
591 TRACE("(%d,%s,%d)\n", idInst
, debugstr_a(psz
), codepage
);
593 pInstance
= WDML_GetInstance(idInst
);
594 if (pInstance
== NULL
)
595 WDML_SetAllLastError(DMLERR_INVALIDPARAMETER
);
598 if (codepage
== 0) codepage
= CP_WINANSI
;
599 hsz
= WDML_CreateString(pInstance
, psz
, codepage
);
606 /******************************************************************************
607 * DdeCreateStringHandleW [USER32.@] Creates handle to identify string
610 * idInst [I] Instance identifier
611 * psz [I] Pointer to string
612 * codepage [I] Code page identifier
614 * Success: String handle
617 HSZ WINAPI
DdeCreateStringHandleW(DWORD idInst
, LPCWSTR psz
, INT codepage
)
619 WDML_INSTANCE
* pInstance
;
622 pInstance
= WDML_GetInstance(idInst
);
623 if (pInstance
== NULL
)
624 WDML_SetAllLastError(DMLERR_INVALIDPARAMETER
);
627 if (codepage
== 0) codepage
= CP_WINUNICODE
;
628 hsz
= WDML_CreateString(pInstance
, psz
, codepage
);
634 /*****************************************************************
635 * DdeFreeStringHandle (USER32.@)
640 BOOL WINAPI
DdeFreeStringHandle(DWORD idInst
, HSZ hsz
)
642 WDML_INSTANCE
* pInstance
;
645 TRACE("(%d,%p):\n", idInst
, hsz
);
647 /* First check instance
649 pInstance
= WDML_GetInstance(idInst
);
651 ret
= WDML_DecHSZ(pInstance
, hsz
);
656 /*****************************************************************
657 * DdeKeepStringHandle (USER32.@)
663 BOOL WINAPI
DdeKeepStringHandle(DWORD idInst
, HSZ hsz
)
665 WDML_INSTANCE
* pInstance
;
668 TRACE("(%d,%p):\n", idInst
, hsz
);
670 /* First check instance
672 pInstance
= WDML_GetInstance(idInst
);
674 ret
= WDML_IncHSZ(pInstance
, hsz
);
679 /*****************************************************************
680 * DdeCmpStringHandles (USER32.@)
682 * Compares the value of two string handles. This comparison is
683 * not case sensitive.
686 * hsz1 [I] Handle to the first string
687 * hsz2 [I] Handle to the second string
690 * -1 The value of hsz1 is zero or less than hsz2
691 * 0 The values of hsz 1 and 2 are the same or both zero.
692 * 1 The value of hsz2 is zero of less than hsz1
694 INT WINAPI
DdeCmpStringHandles(HSZ hsz1
, HSZ hsz2
)
696 WCHAR psz1
[MAX_BUFFER_LEN
];
697 WCHAR psz2
[MAX_BUFFER_LEN
];
701 ret1
= GetAtomNameW(HSZ2ATOM(hsz1
), psz1
, MAX_BUFFER_LEN
);
702 ret2
= GetAtomNameW(HSZ2ATOM(hsz2
), psz2
, MAX_BUFFER_LEN
);
704 TRACE("(%p<%s> %p<%s>);\n", hsz1
, debugstr_w(psz1
), hsz2
, debugstr_w(psz2
));
706 /* Make sure we found both strings. */
707 if (ret1
== 0 && ret2
== 0)
709 /* If both are not found, return both "zero strings". */
714 /* If hsz1 is a not found, return hsz1 is "zero string". */
719 /* If hsz2 is a not found, return hsz2 is "zero string". */
724 /* Compare the two strings we got (case insensitive). */
725 ret
= lstrcmpiW(psz1
, psz2
);
726 /* Since strcmp returns any number smaller than
727 * 0 when the first string is found to be less than
728 * the second one we must make sure we are returning
744 /* ================================================================
746 * Instance management
748 * ================================================================ */
750 /******************************************************************************
751 * IncrementInstanceId
753 * generic routine to increment the max instance Id and allocate a new application instance
755 static void WDML_IncrementInstanceId(WDML_INSTANCE
* pInstance
)
757 DWORD id
= InterlockedIncrement(&WDML_MaxInstanceID
);
759 pInstance
->instanceID
= id
;
760 TRACE("New instance id %d allocated\n", id
);
763 /******************************************************************
768 static LRESULT CALLBACK
WDML_EventProc(HWND hwndEvent
, UINT uMsg
, WPARAM wParam
, LPARAM lParam
)
770 WDML_INSTANCE
* pInstance
;
775 case WM_WDML_REGISTER
:
776 pInstance
= WDML_GetInstanceFromWnd(hwndEvent
);
777 /* try calling the Callback */
778 if (pInstance
&& !(pInstance
->CBFflags
& CBF_SKIP_REGISTRATIONS
))
780 hsz1
= WDML_MakeHszFromAtom(pInstance
, wParam
);
781 hsz2
= WDML_MakeHszFromAtom(pInstance
, lParam
);
782 WDML_InvokeCallback(pInstance
, XTYP_REGISTER
, 0, 0, hsz1
, hsz2
, 0, 0, 0);
783 WDML_DecHSZ(pInstance
, hsz1
);
784 WDML_DecHSZ(pInstance
, hsz2
);
788 case WM_WDML_UNREGISTER
:
789 pInstance
= WDML_GetInstanceFromWnd(hwndEvent
);
790 if (pInstance
&& !(pInstance
->CBFflags
& CBF_SKIP_UNREGISTRATIONS
))
792 hsz1
= WDML_MakeHszFromAtom(pInstance
, wParam
);
793 hsz2
= WDML_MakeHszFromAtom(pInstance
, lParam
);
794 WDML_InvokeCallback(pInstance
, XTYP_UNREGISTER
, 0, 0, hsz1
, hsz2
, 0, 0, 0);
795 WDML_DecHSZ(pInstance
, hsz1
);
796 WDML_DecHSZ(pInstance
, hsz2
);
800 case WM_WDML_CONNECT_CONFIRM
:
801 pInstance
= WDML_GetInstanceFromWnd(hwndEvent
);
802 if (pInstance
&& !(pInstance
->CBFflags
& CBF_SKIP_CONNECT_CONFIRMS
))
805 /* confirm connection...
806 * lookup for this conv handle
808 HWND client
= WIN_GetFullHandle( (HWND
)wParam
);
809 HWND server
= WIN_GetFullHandle( (HWND
)lParam
);
810 for (pConv
= pInstance
->convs
[WDML_SERVER_SIDE
]; pConv
!= NULL
; pConv
= pConv
->next
)
812 if (pConv
->hwndClient
== client
&& pConv
->hwndServer
== server
)
817 pConv
->wStatus
|= ST_ISLOCAL
;
819 WDML_InvokeCallback(pInstance
, XTYP_CONNECT_CONFIRM
, 0, (HCONV
)pConv
,
820 pConv
->hszTopic
, pConv
->hszService
, 0, 0,
821 (pConv
->wStatus
& ST_ISSELF
) ? 1 : 0);
826 return DefWindowProcW(hwndEvent
, uMsg
, wParam
, lParam
);
831 /******************************************************************
836 static UINT
WDML_Initialize(LPDWORD pidInst
, PFNCALLBACK pfnCallback
,
837 DWORD afCmd
, DWORD ulRes
, BOOL bUnicode
)
839 WDML_INSTANCE
* pInstance
;
840 WDML_INSTANCE
* reference_inst
;
842 WNDCLASSEXW wndclass
;
844 TRACE("(%p,%p,0x%x,%d,0x%x)\n",
845 pidInst
, pfnCallback
, afCmd
, ulRes
, bUnicode
);
849 ERR("Reserved value not zero? What does this mean?\n");
850 /* trap this and no more until we know more */
851 return DMLERR_NO_ERROR
;
854 /* grab enough heap for one control struct - not really necessary for re-initialise
855 * but allows us to use same validation routines */
856 pInstance
= HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_INSTANCE
));
857 if (pInstance
== NULL
)
859 /* catastrophe !! warn user & abort */
860 ERR("Instance create failed - out of memory\n");
861 return DMLERR_SYS_ERROR
;
863 pInstance
->next
= NULL
;
864 pInstance
->monitor
= (afCmd
| APPCLASS_MONITOR
);
866 /* messy bit, spec implies that 'Client Only' can be set in 2 different ways, catch 1 here */
868 pInstance
->clientOnly
= afCmd
& APPCMD_CLIENTONLY
;
869 pInstance
->instanceID
= *pidInst
; /* May need to add calling proc Id */
870 pInstance
->threadID
= GetCurrentThreadId();
871 pInstance
->callback
= *pfnCallback
;
872 pInstance
->unicode
= bUnicode
;
873 pInstance
->nodeList
= NULL
; /* node will be added later */
874 pInstance
->monitorFlags
= afCmd
& MF_MASK
;
875 pInstance
->wStatus
= 0;
876 pInstance
->lastError
= DMLERR_NO_ERROR
;
877 pInstance
->servers
= NULL
;
878 pInstance
->convs
[0] = NULL
;
879 pInstance
->convs
[1] = NULL
;
880 pInstance
->links
[0] = NULL
;
881 pInstance
->links
[1] = NULL
;
883 /* isolate CBF flags in one go, expect this will go the way of all attempts to be clever !! */
885 pInstance
->CBFflags
= afCmd
^((afCmd
&MF_MASK
)|((afCmd
&APPCMD_MASK
)|(afCmd
&APPCLASS_MASK
)));
887 if (!pInstance
->clientOnly
)
889 /* Check for other way of setting Client-only !! */
890 pInstance
->clientOnly
=
891 (pInstance
->CBFflags
& CBF_FAIL_ALLSVRXACTIONS
) == CBF_FAIL_ALLSVRXACTIONS
;
894 TRACE("instance created - checking validity\n");
898 /* Initialisation of new Instance Identifier */
899 TRACE("new instance, callback %p flags %X\n",pfnCallback
,afCmd
);
901 EnterCriticalSection(&WDML_CritSect
);
903 if (WDML_InstanceList
== NULL
)
905 /* can't be another instance in this case, assign to the base pointer */
906 WDML_InstanceList
= pInstance
;
908 /* since first must force filter of XTYP_CONNECT and XTYP_WILDCONNECT for
910 * ------------------------------- NOTE NOTE NOTE --------------------------
912 * the manual is not clear if this condition
913 * applies to the first call to DdeInitialize from an application, or the
914 * first call for a given callback !!!
917 pInstance
->CBFflags
= pInstance
->CBFflags
|APPCMD_FILTERINITS
;
918 TRACE("First application instance detected OK\n");
919 /* allocate new instance ID */
920 WDML_IncrementInstanceId(pInstance
);
924 /* really need to chain the new one in to the latest here, but after checking conditions
925 * such as trying to start a conversation from an application trying to monitor */
926 reference_inst
= WDML_InstanceList
;
927 TRACE("Subsequent application instance - starting checks\n");
928 while (reference_inst
->next
!= NULL
)
931 * This set of tests will work if application uses same instance Id
932 * at application level once allocated - which is what manual implies
933 * should happen. If someone tries to be
934 * clever (lazy ?) it will fail to pick up that later calls are for
935 * the same application - should we trust them ?
937 if (pInstance
->instanceID
== reference_inst
->instanceID
)
939 /* Check 1 - must be same Client-only state */
941 if (pInstance
->clientOnly
!= reference_inst
->clientOnly
)
943 ret
= DMLERR_DLL_USAGE
;
947 /* Check 2 - cannot use 'Monitor' with any non-monitor modes */
949 if (pInstance
->monitor
!= reference_inst
->monitor
)
951 ret
= DMLERR_INVALIDPARAMETER
;
955 /* Check 3 - must supply different callback address */
957 if (pInstance
->callback
== reference_inst
->callback
)
959 ret
= DMLERR_DLL_USAGE
;
963 reference_inst
= reference_inst
->next
;
965 /* All cleared, add to chain */
967 TRACE("Application Instance checks finished\n");
968 WDML_IncrementInstanceId(pInstance
);
969 reference_inst
->next
= pInstance
;
971 LeaveCriticalSection(&WDML_CritSect
);
973 *pidInst
= pInstance
->instanceID
;
975 /* for deadlock issues, windows must always be created when outside the critical section */
976 wndclass
.cbSize
= sizeof(wndclass
);
978 wndclass
.lpfnWndProc
= WDML_EventProc
;
979 wndclass
.cbClsExtra
= 0;
980 wndclass
.cbWndExtra
= sizeof(ULONG_PTR
);
981 wndclass
.hInstance
= 0;
983 wndclass
.hCursor
= 0;
984 wndclass
.hbrBackground
= 0;
985 wndclass
.lpszMenuName
= NULL
;
986 wndclass
.lpszClassName
= WDML_szEventClass
;
987 wndclass
.hIconSm
= 0;
989 RegisterClassExW(&wndclass
);
991 pInstance
->hwndEvent
= CreateWindowW(WDML_szEventClass
, NULL
,
992 WS_POPUP
, 0, 0, 0, 0,
995 SetWindowLongPtrW(pInstance
->hwndEvent
, GWL_WDML_INSTANCE
, (ULONG_PTR
)pInstance
);
997 TRACE("New application instance processing finished OK\n");
1001 /* Reinitialisation situation --- FIX */
1002 TRACE("reinitialisation of (%p,%p,0x%x,%d): stub\n", pidInst
, pfnCallback
, afCmd
, ulRes
);
1004 EnterCriticalSection(&WDML_CritSect
);
1006 if (WDML_InstanceList
== NULL
)
1008 ret
= DMLERR_INVALIDPARAMETER
;
1011 /* can't reinitialise if we have initialised nothing !! */
1012 reference_inst
= WDML_InstanceList
;
1013 /* must first check if we have been given a valid instance to re-initialise !! how do we do that ? */
1015 * MS allows initialisation without specifying a callback, should we allow addition of the
1016 * callback by a later call to initialise ? - if so this lot will have to change
1018 while (reference_inst
->next
!= NULL
)
1020 if (*pidInst
== reference_inst
->instanceID
&& pfnCallback
== reference_inst
->callback
)
1022 /* Check 1 - cannot change client-only mode if set via APPCMD_CLIENTONLY */
1024 if (reference_inst
->clientOnly
)
1026 if ((reference_inst
->CBFflags
& CBF_FAIL_ALLSVRXACTIONS
) != CBF_FAIL_ALLSVRXACTIONS
)
1028 /* i.e. Was set to Client-only and through APPCMD_CLIENTONLY */
1030 if (!(afCmd
& APPCMD_CLIENTONLY
))
1032 ret
= DMLERR_INVALIDPARAMETER
;
1037 /* Check 2 - cannot change monitor modes */
1039 if (pInstance
->monitor
!= reference_inst
->monitor
)
1041 ret
= DMLERR_INVALIDPARAMETER
;
1045 /* Check 3 - trying to set Client-only via APPCMD when not set so previously */
1047 if ((afCmd
&APPCMD_CLIENTONLY
) && !reference_inst
->clientOnly
)
1049 ret
= DMLERR_INVALIDPARAMETER
;
1054 reference_inst
= reference_inst
->next
;
1056 if (reference_inst
->next
== NULL
)
1058 ret
= DMLERR_INVALIDPARAMETER
;
1061 /* All checked - change relevant flags */
1063 reference_inst
->CBFflags
= pInstance
->CBFflags
;
1064 reference_inst
->clientOnly
= pInstance
->clientOnly
;
1065 reference_inst
->monitorFlags
= pInstance
->monitorFlags
;
1067 HeapFree(GetProcessHeap(), 0, pInstance
); /* finished - release heap space used as work store */
1069 LeaveCriticalSection(&WDML_CritSect
);
1072 return DMLERR_NO_ERROR
;
1074 HeapFree(GetProcessHeap(), 0, pInstance
);
1075 LeaveCriticalSection(&WDML_CritSect
);
1079 /******************************************************************************
1080 * DdeInitializeA (USER32.@)
1082 * See DdeInitializeW.
1084 UINT WINAPI
DdeInitializeA(LPDWORD pidInst
, PFNCALLBACK pfnCallback
,
1085 DWORD afCmd
, DWORD ulRes
)
1087 return WDML_Initialize(pidInst
, pfnCallback
, afCmd
, ulRes
, FALSE
);
1090 /******************************************************************************
1091 * DdeInitializeW [USER32.@]
1092 * Registers an application with the DDEML
1095 * pidInst [I] Pointer to instance identifier
1096 * pfnCallback [I] Pointer to callback function
1097 * afCmd [I] Set of command and filter flags
1098 * ulRes [I] Reserved
1101 * Success: DMLERR_NO_ERROR
1102 * Failure: DMLERR_DLL_USAGE, DMLERR_INVALIDPARAMETER, DMLERR_SYS_ERROR
1104 UINT WINAPI
DdeInitializeW(LPDWORD pidInst
, PFNCALLBACK pfnCallback
,
1105 DWORD afCmd
, DWORD ulRes
)
1107 return WDML_Initialize(pidInst
, pfnCallback
, afCmd
, ulRes
, TRUE
);
1110 /*****************************************************************
1111 * DdeUninitialize [USER32.@] Frees DDEML resources
1114 * idInst [I] Instance identifier
1121 BOOL WINAPI
DdeUninitialize(DWORD idInst
)
1123 /* Stage one - check if we have a handle for this instance
1125 WDML_INSTANCE
* pInstance
;
1127 WDML_CONV
* pConvNext
;
1129 TRACE("(%d)\n", idInst
);
1131 /* First check instance
1133 pInstance
= WDML_GetInstance(idInst
);
1134 if (pInstance
== NULL
)
1137 * Needs something here to record NOT_INITIALIZED ready for DdeGetLastError
1142 /* first terminate all conversations client side
1143 * this shall close existing links...
1145 for (pConv
= pInstance
->convs
[WDML_CLIENT_SIDE
]; pConv
!= NULL
; pConv
= pConvNext
)
1147 pConvNext
= pConv
->next
;
1148 DdeDisconnect((HCONV
)pConv
);
1150 if (pInstance
->convs
[WDML_CLIENT_SIDE
])
1151 FIXME("still pending conversations\n");
1153 /* then unregister all known service names */
1154 DdeNameService(idInst
, 0, 0, DNS_UNREGISTER
);
1156 /* Free the nodes that were not freed by this instance
1157 * and remove the nodes from the list of HSZ nodes.
1159 WDML_FreeAllHSZ(pInstance
);
1161 DestroyWindow(pInstance
->hwndEvent
);
1163 /* OK now delete the instance handle itself */
1165 if (WDML_InstanceList
== pInstance
)
1167 /* special case - the first/only entry */
1168 WDML_InstanceList
= pInstance
->next
;
1172 /* general case, remove entry */
1173 WDML_INSTANCE
* inst
;
1175 for (inst
= WDML_InstanceList
; inst
->next
!= pInstance
; inst
= inst
->next
);
1176 inst
->next
= pInstance
->next
;
1178 /* release the heap entry
1180 HeapFree(GetProcessHeap(), 0, pInstance
);
1185 /******************************************************************
1186 * WDML_NotifyThreadExit
1190 void WDML_NotifyThreadDetach(void)
1192 WDML_INSTANCE
* pInstance
;
1193 WDML_INSTANCE
* next
;
1194 DWORD tid
= GetCurrentThreadId();
1196 EnterCriticalSection(&WDML_CritSect
);
1197 for (pInstance
= WDML_InstanceList
; pInstance
!= NULL
; pInstance
= next
)
1199 next
= pInstance
->next
;
1200 if (pInstance
->threadID
== tid
)
1202 LeaveCriticalSection(&WDML_CritSect
);
1203 DdeUninitialize(pInstance
->instanceID
);
1204 EnterCriticalSection(&WDML_CritSect
);
1207 LeaveCriticalSection(&WDML_CritSect
);
1210 /******************************************************************
1211 * WDML_InvokeCallback
1215 HDDEDATA
WDML_InvokeCallback(WDML_INSTANCE
* pInstance
, UINT uType
, UINT uFmt
, HCONV hConv
,
1216 HSZ hsz1
, HSZ hsz2
, HDDEDATA hdata
,
1217 ULONG_PTR dwData1
, ULONG_PTR dwData2
)
1221 if (pInstance
== NULL
)
1224 TRACE("invoking CB[%p] (%x %x %p %p %p %p %lx %lx)\n",
1225 pInstance
->callback
, uType
, uFmt
,
1226 hConv
, hsz1
, hsz2
, hdata
, dwData1
, dwData2
);
1227 ret
= pInstance
->callback(uType
, uFmt
, hConv
, hsz1
, hsz2
, hdata
, dwData1
, dwData2
);
1228 TRACE("done => %p\n", ret
);
1232 /*****************************************************************************
1235 * generic routine to return a pointer to the relevant DDE_HANDLE_ENTRY
1236 * for an instance Id, or NULL if the entry does not exist
1239 WDML_INSTANCE
* WDML_GetInstance(DWORD instId
)
1241 WDML_INSTANCE
* pInstance
;
1243 EnterCriticalSection(&WDML_CritSect
);
1245 for (pInstance
= WDML_InstanceList
; pInstance
!= NULL
; pInstance
= pInstance
->next
)
1247 if (pInstance
->instanceID
== instId
)
1249 if (GetCurrentThreadId() != pInstance
->threadID
)
1251 FIXME("Tried to get instance from wrong thread\n");
1258 LeaveCriticalSection(&WDML_CritSect
);
1261 WARN("Instance entry missing for id %04x\n", instId
);
1265 /******************************************************************
1266 * WDML_GetInstanceFromWnd
1270 WDML_INSTANCE
* WDML_GetInstanceFromWnd(HWND hWnd
)
1272 return (WDML_INSTANCE
*)GetWindowLongPtrW(hWnd
, GWL_WDML_INSTANCE
);
1275 /* ================================================================
1277 * Data handle management
1279 * ================================================================ */
1281 /*****************************************************************
1282 * DdeCreateDataHandle (USER32.@)
1284 HDDEDATA WINAPI
DdeCreateDataHandle(DWORD idInst
, LPBYTE pSrc
, DWORD cb
, DWORD cbOff
,
1285 HSZ hszItem
, UINT wFmt
, UINT afCmd
)
1288 /* Other than check for validity we will ignore for now idInst, hszItem.
1289 * The purpose of these arguments still need to be investigated.
1292 WDML_INSTANCE
* pInstance
;
1295 DDE_DATAHANDLE_HEAD
* pDdh
;
1296 WCHAR psz
[MAX_BUFFER_LEN
];
1298 pInstance
= WDML_GetInstance(idInst
);
1299 if (pInstance
== NULL
)
1301 WDML_SetAllLastError(DMLERR_INVALIDPARAMETER
);
1305 if (!GetAtomNameW(HSZ2ATOM(hszItem
), psz
, MAX_BUFFER_LEN
))
1307 psz
[0] = HSZ2ATOM(hszItem
);
1311 TRACE("(%d,%p,cb %d, cbOff %d,%p <%s>,fmt %04x,%x)\n",
1312 idInst
, pSrc
, cb
, cbOff
, hszItem
, debugstr_w(psz
), wFmt
, afCmd
);
1314 if (afCmd
!= 0 && afCmd
!= HDATA_APPOWNED
)
1317 /* we use the first 4 bytes to store the size */
1318 if (!(hMem
= GlobalAlloc(GMEM_MOVEABLE
| GMEM_DDESHARE
, cb
+ cbOff
+ sizeof(DDE_DATAHANDLE_HEAD
))))
1320 ERR("GlobalAlloc failed\n");
1324 pDdh
= GlobalLock(hMem
);
1331 pDdh
->cfFormat
= wFmt
;
1332 pDdh
->bAppOwned
= (afCmd
== HDATA_APPOWNED
);
1334 pByte
= (LPBYTE
)(pDdh
+ 1);
1337 memcpy(pByte
, pSrc
+ cbOff
, cb
);
1341 TRACE("=> %p\n", hMem
);
1345 /*****************************************************************
1347 * DdeAddData (USER32.@)
1349 HDDEDATA WINAPI
DdeAddData(HDDEDATA hData
, LPBYTE pSrc
, DWORD cb
, DWORD cbOff
)
1351 DWORD old_sz
, new_sz
;
1354 TRACE("(%p,%p,cb %d, cbOff %d)\n", hData
, pSrc
, cb
, cbOff
);
1356 pDst
= DdeAccessData(hData
, &old_sz
);
1357 if (!pDst
) return 0;
1359 new_sz
= cb
+ cbOff
;
1360 if (new_sz
> old_sz
)
1362 DdeUnaccessData(hData
);
1363 hData
= GlobalReAlloc(hData
, new_sz
+ sizeof(DDE_DATAHANDLE_HEAD
),
1364 GMEM_MOVEABLE
| GMEM_DDESHARE
);
1365 pDst
= DdeAccessData(hData
, &old_sz
);
1368 if (!pDst
) return 0;
1370 memcpy(pDst
+ cbOff
, pSrc
, cb
);
1371 DdeUnaccessData(hData
);
1375 /******************************************************************************
1376 * DdeGetData [USER32.@] Copies data from DDE object to local buffer
1380 * hData [I] Handle to DDE object
1381 * pDst [I] Pointer to destination buffer
1382 * cbMax [I] Amount of data to copy
1383 * cbOff [I] Offset to beginning of data
1386 * Size of memory object associated with handle
1388 DWORD WINAPI
DdeGetData(HDDEDATA hData
, LPBYTE pDst
, DWORD cbMax
, DWORD cbOff
)
1390 DWORD dwSize
, dwRet
;
1393 TRACE("(%p,%p,%d,%d)\n", hData
, pDst
, cbMax
, cbOff
);
1395 pByte
= DdeAccessData(hData
, &dwSize
);
1403 else if (cbOff
+ cbMax
< dwSize
)
1407 else if (cbOff
< dwSize
)
1409 dwRet
= dwSize
- cbOff
;
1415 if (pDst
&& dwRet
!= 0)
1417 memcpy(pDst
, pByte
+ cbOff
, dwRet
);
1419 DdeUnaccessData(hData
);
1428 /*****************************************************************
1429 * DdeAccessData (USER32.@)
1431 LPBYTE WINAPI
DdeAccessData(HDDEDATA hData
, LPDWORD pcbDataSize
)
1433 HGLOBAL hMem
= hData
;
1434 DDE_DATAHANDLE_HEAD
* pDdh
;
1436 TRACE("(%p,%p)\n", hData
, pcbDataSize
);
1438 pDdh
= GlobalLock(hMem
);
1441 ERR("Failed on GlobalLock(%p)\n", hMem
);
1445 if (pcbDataSize
!= NULL
)
1447 *pcbDataSize
= GlobalSize(hMem
) - sizeof(DDE_DATAHANDLE_HEAD
);
1449 TRACE("=> %p (%lu) fmt %04x\n", pDdh
+ 1, GlobalSize(hMem
) - sizeof(DDE_DATAHANDLE_HEAD
), pDdh
->cfFormat
);
1450 return (LPBYTE
)(pDdh
+ 1);
1453 /*****************************************************************
1454 * DdeUnaccessData (USER32.@)
1456 BOOL WINAPI
DdeUnaccessData(HDDEDATA hData
)
1458 HGLOBAL hMem
= hData
;
1460 TRACE("(%p)\n", hData
);
1467 /*****************************************************************
1468 * DdeFreeDataHandle (USER32.@)
1470 BOOL WINAPI
DdeFreeDataHandle(HDDEDATA hData
)
1472 TRACE("(%p)\n", hData
);
1474 /* 1 is the handle value returned by an asynchronous operation. */
1475 if (hData
== (HDDEDATA
)1)
1478 return GlobalFree(hData
) == 0;
1481 /******************************************************************
1486 BOOL
WDML_IsAppOwned(HDDEDATA hData
)
1488 DDE_DATAHANDLE_HEAD
* pDdh
;
1491 pDdh
= GlobalLock(hData
);
1494 ret
= pDdh
->bAppOwned
;
1495 GlobalUnlock(hData
);
1500 /* ================================================================
1502 * Global <=> Data handle management
1504 * ================================================================ */
1506 /* Note: we use a DDEDATA, but layout of DDEDATA, DDEADVISE and DDEPOKE structures is similar:
1508 * (bytes) (bits) comment
1509 * 0 16 bit fields for options (release, ackreq, response...)
1510 * 2 16 clipboard format
1511 * 4 ? data to be used
1513 HDDEDATA
WDML_Global2DataHandle(WDML_CONV
* pConv
, HGLOBAL hMem
, WINE_DDEHEAD
* p
)
1521 pDd
= GlobalLock(hMem
);
1522 size
= GlobalSize(hMem
) - sizeof(WINE_DDEHEAD
);
1525 if (p
) memcpy(p
, pDd
, sizeof(WINE_DDEHEAD
));
1526 switch (pDd
->cfFormat
)
1529 FIXME("Unsupported format (%04x) for data %p, passing raw information\n",
1530 pDd
->cfFormat
, hMem
);
1534 ret
= DdeCreateDataHandle(pConv
->instance
->instanceID
, pDd
->Value
, size
, 0, 0, pDd
->cfFormat
, 0);
1537 if (size
>= sizeof(BITMAP
))
1539 BITMAP
* bmp
= (BITMAP
*)pDd
->Value
;
1540 int count
= bmp
->bmWidthBytes
* bmp
->bmHeight
* bmp
->bmPlanes
;
1541 if (size
>= sizeof(BITMAP
) + count
)
1545 if ((hbmp
= CreateBitmap(bmp
->bmWidth
, bmp
->bmHeight
,
1546 bmp
->bmPlanes
, bmp
->bmBitsPixel
,
1547 pDd
->Value
+ sizeof(BITMAP
))))
1549 ret
= DdeCreateDataHandle(pConv
->instance
->instanceID
, (LPBYTE
)&hbmp
, sizeof(hbmp
),
1550 0, 0, CF_BITMAP
, 0);
1552 else ERR("Can't create bmp\n");
1556 ERR("Wrong count: %u / %d\n", size
, count
);
1558 } else ERR("No bitmap header\n");
1567 /******************************************************************
1568 * WDML_DataHandle2Global
1572 HGLOBAL
WDML_DataHandle2Global(HDDEDATA hDdeData
, BOOL fResponse
, BOOL fRelease
,
1573 BOOL fDeferUpd
, BOOL fAckReq
)
1575 DDE_DATAHANDLE_HEAD
* pDdh
;
1579 dwSize
= GlobalSize(hDdeData
) - sizeof(DDE_DATAHANDLE_HEAD
);
1580 pDdh
= GlobalLock(hDdeData
);
1583 WINE_DDEHEAD
* wdh
= NULL
;
1585 switch (pDdh
->cfFormat
)
1588 FIXME("Unsupported format (%04x) for data %p, passing raw information\n",
1589 pDdh
->cfFormat
, hDdeData
);
1593 hMem
= GlobalAlloc(GMEM_MOVEABLE
| GMEM_DDESHARE
, sizeof(WINE_DDEHEAD
) + dwSize
);
1594 if (hMem
&& (wdh
= GlobalLock(hMem
)))
1596 memcpy(wdh
+ 1, pDdh
+ 1, dwSize
);
1600 if (dwSize
>= sizeof(HBITMAP
))
1604 HBITMAP hbmp
= *(HBITMAP
*)(pDdh
+ 1);
1606 if (GetObjectW(hbmp
, sizeof(bmp
), &bmp
))
1608 count
= bmp
.bmWidthBytes
* bmp
.bmHeight
;
1609 hMem
= GlobalAlloc(GMEM_MOVEABLE
| GMEM_DDESHARE
,
1610 sizeof(WINE_DDEHEAD
) + sizeof(bmp
) + count
);
1611 if (hMem
&& (wdh
= GlobalLock(hMem
)))
1613 memcpy(wdh
+ 1, &bmp
, sizeof(bmp
));
1614 GetBitmapBits(hbmp
, count
, ((char*)(wdh
+ 1)) + sizeof(bmp
));
1623 wdh
->fResponse
= fResponse
;
1624 wdh
->fRelease
= fRelease
;
1625 wdh
->fDeferUpd
= fDeferUpd
;
1626 wdh
->fAckReq
= fAckReq
;
1627 wdh
->cfFormat
= pDdh
->cfFormat
;
1630 GlobalUnlock(hDdeData
);
1636 /* ================================================================
1640 * ================================================================ */
1642 /******************************************************************
1647 WDML_SERVER
* WDML_AddServer(WDML_INSTANCE
* pInstance
, HSZ hszService
, HSZ hszTopic
)
1649 WDML_SERVER
* pServer
;
1653 pServer
= HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_SERVER
));
1654 if (pServer
== NULL
) return NULL
;
1656 pServer
->hszService
= hszService
;
1657 WDML_IncHSZ(pInstance
, hszService
);
1659 DdeQueryStringW(pInstance
->instanceID
, hszService
, buf1
, 256, CP_WINUNICODE
);
1660 swprintf(buf2
, 256, L
"%s(0x%*x)", buf1
, 2*sizeof(ULONG_PTR
), GetCurrentProcessId());
1661 pServer
->hszServiceSpec
= DdeCreateStringHandleW(pInstance
->instanceID
, buf2
, CP_WINUNICODE
);
1663 pServer
->atomService
= WDML_MakeAtomFromHsz(pServer
->hszService
);
1664 pServer
->atomServiceSpec
= WDML_MakeAtomFromHsz(pServer
->hszServiceSpec
);
1666 pServer
->filterOn
= TRUE
;
1668 pServer
->next
= pInstance
->servers
;
1669 pInstance
->servers
= pServer
;
1673 /******************************************************************
1678 void WDML_RemoveServer(WDML_INSTANCE
* pInstance
, HSZ hszService
, HSZ hszTopic
)
1680 WDML_SERVER
* pPrev
= NULL
;
1681 WDML_SERVER
* pServer
= NULL
;
1683 WDML_CONV
* pConvNext
;
1685 pServer
= pInstance
->servers
;
1687 while (pServer
!= NULL
)
1689 if (DdeCmpStringHandles(pServer
->hszService
, hszService
) == 0)
1691 WDML_BroadcastDDEWindows(WDML_szEventClass
, WM_WDML_UNREGISTER
,
1692 pServer
->atomService
, pServer
->atomServiceSpec
);
1693 /* terminate all conversations for given topic */
1694 for (pConv
= pInstance
->convs
[WDML_SERVER_SIDE
]; pConv
!= NULL
; pConv
= pConvNext
)
1696 pConvNext
= pConv
->next
;
1697 if (DdeCmpStringHandles(pConv
->hszService
, hszService
) == 0)
1699 HWND client
= pConv
->hwndClient
, server
= pConv
->hwndServer
;
1700 WDML_RemoveConv(pConv
, WDML_SERVER_SIDE
);
1701 /* don't care about return code (whether client window is present or not) */
1702 PostMessageW(client
, WM_DDE_TERMINATE
, (WPARAM
)server
, 0);
1705 if (pServer
== pInstance
->servers
)
1707 pInstance
->servers
= pServer
->next
;
1711 pPrev
->next
= pServer
->next
;
1714 DestroyWindow(pServer
->hwndServer
);
1715 WDML_DecHSZ(pInstance
, pServer
->hszServiceSpec
);
1716 WDML_DecHSZ(pInstance
, pServer
->hszService
);
1718 GlobalDeleteAtom(pServer
->atomService
);
1719 GlobalDeleteAtom(pServer
->atomServiceSpec
);
1721 HeapFree(GetProcessHeap(), 0, pServer
);
1726 pServer
= pServer
->next
;
1730 /*****************************************************************************
1733 * generic routine to return a pointer to the relevant ServiceNode
1734 * for a given service name, or NULL if the entry does not exist
1737 WDML_SERVER
* WDML_FindServer(WDML_INSTANCE
* pInstance
, HSZ hszService
, HSZ hszTopic
)
1739 WDML_SERVER
* pServer
;
1741 for (pServer
= pInstance
->servers
; pServer
!= NULL
; pServer
= pServer
->next
)
1743 if (hszService
== pServer
->hszService
)
1748 TRACE("Service name missing\n");
1752 /* ================================================================
1754 * Link (hot & warm) management
1756 * ================================================================ */
1758 /******************************************************************
1763 void WDML_AddLink(WDML_INSTANCE
* pInstance
, HCONV hConv
, WDML_SIDE side
,
1764 UINT wType
, HSZ hszItem
, UINT wFmt
)
1768 pLink
= HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_LINK
));
1775 pLink
->hConv
= hConv
;
1776 pLink
->transactionType
= wType
;
1777 WDML_IncHSZ(pInstance
, pLink
->hszItem
= hszItem
);
1779 pLink
->next
= pInstance
->links
[side
];
1780 pInstance
->links
[side
] = pLink
;
1783 /******************************************************************
1788 void WDML_RemoveLink(WDML_INSTANCE
* pInstance
, HCONV hConv
, WDML_SIDE side
,
1789 HSZ hszItem
, UINT uFmt
)
1791 WDML_LINK
* pPrev
= NULL
;
1792 WDML_LINK
* pCurrent
= NULL
;
1794 pCurrent
= pInstance
->links
[side
];
1796 while (pCurrent
!= NULL
)
1798 if (pCurrent
->hConv
== hConv
&&
1799 DdeCmpStringHandles(pCurrent
->hszItem
, hszItem
) == 0 &&
1800 pCurrent
->uFmt
== uFmt
)
1802 if (pCurrent
== pInstance
->links
[side
])
1804 pInstance
->links
[side
] = pCurrent
->next
;
1808 pPrev
->next
= pCurrent
->next
;
1811 WDML_DecHSZ(pInstance
, pCurrent
->hszItem
);
1812 HeapFree(GetProcessHeap(), 0, pCurrent
);
1817 pCurrent
= pCurrent
->next
;
1821 /* this function is called to remove all links related to the conv.
1822 It should be called from both client and server when terminating
1825 /******************************************************************
1826 * WDML_RemoveAllLinks
1830 static void WDML_RemoveAllLinks(WDML_INSTANCE
* pInstance
, WDML_CONV
* pConv
, WDML_SIDE side
)
1832 WDML_LINK
* pPrev
= NULL
;
1833 WDML_LINK
* pCurrent
= NULL
;
1834 WDML_LINK
* pNext
= NULL
;
1836 pCurrent
= pInstance
->links
[side
];
1838 while (pCurrent
!= NULL
)
1840 if (pCurrent
->hConv
== (HCONV
)pConv
)
1842 if (pCurrent
== pInstance
->links
[side
])
1844 pInstance
->links
[side
] = pCurrent
->next
;
1845 pNext
= pCurrent
->next
;
1849 pPrev
->next
= pCurrent
->next
;
1850 pNext
= pCurrent
->next
;
1853 WDML_DecHSZ(pInstance
, pCurrent
->hszItem
);
1855 HeapFree(GetProcessHeap(), 0, pCurrent
);
1862 pCurrent
= pCurrent
->next
;
1871 /******************************************************************
1876 WDML_LINK
* WDML_FindLink(WDML_INSTANCE
* pInstance
, HCONV hConv
, WDML_SIDE side
,
1877 HSZ hszItem
, BOOL use_fmt
, UINT uFmt
)
1879 WDML_LINK
* pCurrent
;
1881 for (pCurrent
= pInstance
->links
[side
]; pCurrent
!= NULL
; pCurrent
= pCurrent
->next
)
1883 /* we don't need to check for transaction type as it can be altered */
1885 if (pCurrent
->hConv
== hConv
&&
1886 DdeCmpStringHandles(pCurrent
->hszItem
, hszItem
) == 0 &&
1887 (!use_fmt
|| pCurrent
->uFmt
== uFmt
))
1897 /* ================================================================
1899 * Transaction management
1901 * ================================================================ */
1903 /******************************************************************
1904 * WDML_AllocTransaction
1906 * Alloc a transaction structure for handling the message ddeMsg
1908 WDML_XACT
* WDML_AllocTransaction(WDML_INSTANCE
* pInstance
, UINT ddeMsg
,
1909 UINT wFmt
, HSZ hszItem
)
1912 static WORD tid
= 1; /* FIXME: wrap around */
1914 pXAct
= HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_XACT
));
1917 pInstance
->lastError
= DMLERR_MEMORY_ERROR
;
1921 pXAct
->xActID
= tid
++;
1922 pXAct
->ddeMsg
= ddeMsg
;
1923 pXAct
->hDdeData
= 0;
1928 if ((pXAct
->hszItem
= hszItem
)) WDML_IncHSZ(pInstance
, pXAct
->hszItem
);
1936 /******************************************************************
1937 * WDML_QueueTransaction
1939 * Adds a transaction to the list of transaction
1941 void WDML_QueueTransaction(WDML_CONV
* pConv
, WDML_XACT
* pXAct
)
1945 /* advance to last in queue */
1946 for (pt
= &pConv
->transactions
; *pt
!= NULL
; pt
= &(*pt
)->next
);
1950 /******************************************************************
1951 * WDML_UnQueueTransaction
1955 BOOL
WDML_UnQueueTransaction(WDML_CONV
* pConv
, WDML_XACT
* pXAct
)
1959 for (pt
= &pConv
->transactions
; *pt
; pt
= &(*pt
)->next
)
1970 /******************************************************************
1971 * WDML_FreeTransaction
1975 void WDML_FreeTransaction(WDML_INSTANCE
* pInstance
, WDML_XACT
* pXAct
, BOOL doFreePmt
)
1977 /* free pmt(s) in pXAct too. check against one for not deleting TRUE return values */
1978 if (doFreePmt
&& (ULONG_PTR
)pXAct
->hMem
> 1)
1980 GlobalFree(pXAct
->hMem
);
1982 if (pXAct
->hszItem
) WDML_DecHSZ(pInstance
, pXAct
->hszItem
);
1984 HeapFree(GetProcessHeap(), 0, pXAct
);
1987 /******************************************************************
1988 * WDML_FindTransaction
1992 static WDML_XACT
* WDML_FindTransaction(WDML_CONV
* pConv
, DWORD tid
)
1997 for (pXAct
= pConv
->transactions
; pXAct
; pXAct
= pXAct
->next
)
1999 if (pXAct
->xActID
== tid
)
2005 /* ================================================================
2007 * Conversation management
2009 * ================================================================ */
2011 /******************************************************************
2016 WDML_CONV
* WDML_AddConv(WDML_INSTANCE
* pInstance
, WDML_SIDE side
,
2017 HSZ hszService
, HSZ hszTopic
, HWND hwndClient
, HWND hwndServer
)
2021 /* no conversation yet, add it */
2022 pConv
= HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_CONV
));
2023 if (!pConv
) return NULL
;
2025 pConv
->instance
= pInstance
;
2026 WDML_IncHSZ(pInstance
, pConv
->hszService
= hszService
);
2027 WDML_IncHSZ(pInstance
, pConv
->hszTopic
= hszTopic
);
2028 pConv
->magic
= WDML_CONV_MAGIC
;
2029 pConv
->hwndServer
= hwndServer
;
2030 pConv
->hwndClient
= hwndClient
;
2031 pConv
->transactions
= NULL
;
2033 pConv
->wStatus
= (side
== WDML_CLIENT_SIDE
) ? ST_CLIENT
: 0L;
2034 pConv
->wStatus
|= pInstance
->wStatus
;
2035 /* check if both side of the conversation are of the same instance */
2036 if (GetWindowThreadProcessId(hwndClient
, NULL
) == GetWindowThreadProcessId(hwndServer
, NULL
) &&
2037 WDML_GetInstanceFromWnd(hwndClient
) == WDML_GetInstanceFromWnd(hwndServer
))
2039 pConv
->wStatus
|= ST_ISSELF
;
2041 pConv
->wConvst
= XST_NULL
;
2043 pConv
->next
= pInstance
->convs
[side
];
2044 pInstance
->convs
[side
] = pConv
;
2046 TRACE("pConv->wStatus %04x pInstance(%p)\n", pConv
->wStatus
, pInstance
);
2051 /******************************************************************
2056 WDML_CONV
* WDML_FindConv(WDML_INSTANCE
* pInstance
, WDML_SIDE side
,
2057 HSZ hszService
, HSZ hszTopic
)
2059 WDML_CONV
* pCurrent
;
2061 for (pCurrent
= pInstance
->convs
[side
]; pCurrent
!= NULL
; pCurrent
= pCurrent
->next
)
2063 if (DdeCmpStringHandles(pCurrent
->hszService
, hszService
) == 0 &&
2064 DdeCmpStringHandles(pCurrent
->hszTopic
, hszTopic
) == 0)
2073 /******************************************************************
2078 void WDML_RemoveConv(WDML_CONV
* pRef
, WDML_SIDE side
)
2080 WDML_CONV
* pPrev
= NULL
;
2081 WDML_CONV
* pCurrent
;
2083 WDML_XACT
* pXActNext
;
2089 /* remove any pending transaction */
2090 for (pXAct
= pRef
->transactions
; pXAct
!= NULL
; pXAct
= pXActNext
)
2092 pXActNext
= pXAct
->next
;
2093 WDML_FreeTransaction(pRef
->instance
, pXAct
, TRUE
);
2096 WDML_RemoveAllLinks(pRef
->instance
, pRef
, side
);
2098 /* FIXME: should we keep the window around ? it seems so (at least on client side
2099 * to let QueryConvInfo work after conv termination, but also to implement
2102 /* destroy conversation window, but first remove pConv from hWnd.
2103 * this would help the wndProc do appropriate handling upon a WM_DESTROY message
2105 hWnd
= (side
== WDML_CLIENT_SIDE
) ? pRef
->hwndClient
: pRef
->hwndServer
;
2106 SetWindowLongPtrW(hWnd
, GWL_WDML_CONVERSATION
, 0);
2108 DestroyWindow((side
== WDML_CLIENT_SIDE
) ? pRef
->hwndClient
: pRef
->hwndServer
);
2110 WDML_DecHSZ(pRef
->instance
, pRef
->hszService
);
2111 WDML_DecHSZ(pRef
->instance
, pRef
->hszTopic
);
2113 for (pCurrent
= pRef
->instance
->convs
[side
]; pCurrent
!= NULL
; pCurrent
= (pPrev
= pCurrent
)->next
)
2115 if (pCurrent
== pRef
)
2117 if (pCurrent
== pRef
->instance
->convs
[side
])
2119 pRef
->instance
->convs
[side
] = pCurrent
->next
;
2123 pPrev
->next
= pCurrent
->next
;
2125 pCurrent
->magic
= 0;
2126 HeapFree(GetProcessHeap(), 0, pCurrent
);
2132 /******************************************************************
2133 * WDML_EnableCallback
2135 static BOOL
WDML_EnableCallback(WDML_CONV
*pConv
, UINT wCmd
)
2137 if (wCmd
== EC_DISABLE
)
2139 pConv
->wStatus
|= ST_BLOCKED
;
2140 TRACE("EC_DISABLE: conv %p status flags %04x\n", pConv
, pConv
->wStatus
);
2144 if (wCmd
== EC_QUERYWAITING
)
2145 return pConv
->transactions
!= NULL
;
2147 if (wCmd
!= EC_ENABLEALL
&& wCmd
!= EC_ENABLEONE
)
2149 FIXME("Unknown command code %04x\n", wCmd
);
2153 if (wCmd
== EC_ENABLEALL
)
2155 pConv
->wStatus
&= ~ST_BLOCKED
;
2156 TRACE("EC_ENABLEALL: conv %p status flags %04x\n", pConv
, pConv
->wStatus
);
2159 while (pConv
->transactions
)
2161 WDML_XACT
*pXAct
= pConv
->transactions
;
2163 if (pConv
->wStatus
& ST_CLIENT
)
2165 /* transaction should be in the queue until handled */
2166 WDML_ClientHandle(pConv
, pXAct
, 0, NULL
);
2167 WDML_UnQueueTransaction(pConv
, pXAct
);
2171 /* transaction should be removed from the queue before handling */
2172 WDML_UnQueueTransaction(pConv
, pXAct
);
2173 WDML_ServerHandle(pConv
, pXAct
);
2176 WDML_FreeTransaction(pConv
->instance
, pXAct
, TRUE
);
2178 if (wCmd
== EC_ENABLEONE
) break;
2183 /*****************************************************************
2184 * DdeEnableCallback (USER32.@)
2186 BOOL WINAPI
DdeEnableCallback(DWORD idInst
, HCONV hConv
, UINT wCmd
)
2191 TRACE("(%d, %p, %04x)\n", idInst
, hConv
, wCmd
);
2195 pConv
= WDML_GetConv(hConv
, TRUE
);
2197 if (pConv
&& pConv
->instance
->instanceID
== idInst
)
2198 ret
= WDML_EnableCallback(pConv
, wCmd
);
2202 WDML_INSTANCE
*pInstance
= WDML_GetInstance(idInst
);
2207 TRACE("adding flags %04x to instance %p\n", wCmd
, pInstance
);
2208 pInstance
->wStatus
|= wCmd
;
2210 if (wCmd
== EC_DISABLE
)
2212 pInstance
->wStatus
|= ST_BLOCKED
;
2213 TRACE("EC_DISABLE: inst %p status flags %04x\n", pInstance
, pInstance
->wStatus
);
2215 else if (wCmd
== EC_ENABLEALL
)
2217 pInstance
->wStatus
&= ~ST_BLOCKED
;
2218 TRACE("EC_ENABLEALL: inst %p status flags %04x\n", pInstance
, pInstance
->wStatus
);
2223 for (pConv
= pInstance
->convs
[WDML_CLIENT_SIDE
]; pConv
!= NULL
; pConv
= pConv
->next
)
2225 ret
= WDML_EnableCallback(pConv
, wCmd
);
2226 if (ret
&& wCmd
== EC_QUERYWAITING
) break;
2233 /******************************************************************
2238 WDML_CONV
* WDML_GetConv(HCONV hConv
, BOOL checkConnected
)
2240 WDML_CONV
* pConv
= (WDML_CONV
*)hConv
;
2242 /* FIXME: should do better checking */
2243 if (pConv
== NULL
|| pConv
->magic
!= WDML_CONV_MAGIC
) return NULL
;
2245 if (!pConv
->instance
)
2247 WARN("wrong thread ID, no instance\n");
2251 if (pConv
->instance
->threadID
!= GetCurrentThreadId())
2253 WARN("wrong thread ID\n");
2254 pConv
->instance
->lastError
= DMLERR_INVALIDPARAMETER
; /* FIXME: check */
2258 if (checkConnected
&& !(pConv
->wStatus
& ST_CONNECTED
))
2260 WARN("found conv but ain't connected\n");
2261 pConv
->instance
->lastError
= DMLERR_NO_CONV_ESTABLISHED
;
2268 /******************************************************************
2269 * WDML_GetConvFromWnd
2273 WDML_CONV
* WDML_GetConvFromWnd(HWND hWnd
)
2275 return (WDML_CONV
*)GetWindowLongPtrW(hWnd
, GWL_WDML_CONVERSATION
);
2278 /******************************************************************
2283 BOOL
WDML_PostAck(WDML_CONV
* pConv
, WDML_SIDE side
, WORD appRetCode
,
2284 BOOL fBusy
, BOOL fAck
, UINT_PTR pmt
, LPARAM lParam
, UINT oldMsg
)
2289 if (side
== WDML_SERVER_SIDE
)
2291 from
= pConv
->hwndServer
;
2292 to
= pConv
->hwndClient
;
2296 to
= pConv
->hwndServer
;
2297 from
= pConv
->hwndClient
;
2300 ddeAck
.bAppReturnCode
= appRetCode
;
2301 ddeAck
.reserved
= 0;
2302 ddeAck
.fBusy
= fBusy
;
2305 TRACE("Posting a %s ack\n", ddeAck
.fAck
? "positive" : "negative");
2307 lParam
= (lParam
) ? ReuseDDElParam(lParam
, oldMsg
, WM_DDE_ACK
, *(WORD
*)&ddeAck
, pmt
) :
2308 PackDDElParam(WM_DDE_ACK
, *(WORD
*)&ddeAck
, pmt
);
2309 if (!PostMessageW(to
, WM_DDE_ACK
, (WPARAM
)from
, lParam
))
2311 pConv
->wStatus
&= ~ST_CONNECTED
;
2312 pConv
->instance
->lastError
= DMLERR_POSTMSG_FAILED
;
2313 FreeDDElParam(WM_DDE_ACK
, lParam
);
2319 /*****************************************************************
2320 * DdeSetUserHandle (USER32.@)
2322 BOOL WINAPI
DdeSetUserHandle(HCONV hConv
, DWORD id
, DWORD hUser
)
2326 pConv
= WDML_GetConv(hConv
, FALSE
);
2332 pConv
->hUser
= hUser
;
2338 pXAct
= WDML_FindTransaction(pConv
, id
);
2341 pXAct
->hUser
= hUser
;
2345 pConv
->instance
->lastError
= DMLERR_UNFOUND_QUEUE_ID
;
2352 /******************************************************************
2353 * WDML_GetLocalConvInfo
2357 static BOOL
WDML_GetLocalConvInfo(WDML_CONV
* pConv
, CONVINFO
* ci
, DWORD id
)
2363 ci
->hConvPartner
= (pConv
->wStatus
& ST_ISLOCAL
) ? (HCONV
)((ULONG_PTR
)pConv
| 1) : 0;
2364 ci
->hszSvcPartner
= pConv
->hszService
;
2365 ci
->hszServiceReq
= pConv
->hszService
; /* FIXME: they shouldn't be the same, should they ? */
2366 ci
->hszTopic
= pConv
->hszTopic
;
2367 ci
->wStatus
= pConv
->wStatus
;
2369 side
= (pConv
->wStatus
& ST_CLIENT
) ? WDML_CLIENT_SIDE
: WDML_SERVER_SIDE
;
2371 for (pLink
= pConv
->instance
->links
[side
]; pLink
!= NULL
; pLink
= pLink
->next
)
2373 if (pLink
->hConv
== (HCONV
)pConv
)
2375 ci
->wStatus
|= ST_ADVISE
;
2380 /* FIXME: non handled status flags:
2386 ci
->wConvst
= pConv
->wConvst
; /* FIXME */
2388 ci
->wLastError
= 0; /* FIXME: note it's not the instance last error */
2390 ci
->ConvCtxt
= pConv
->convContext
;
2391 if (ci
->wStatus
& ST_CLIENT
)
2393 ci
->hwnd
= pConv
->hwndClient
;
2394 ci
->hwndPartner
= pConv
->hwndServer
;
2398 ci
->hwnd
= pConv
->hwndServer
;
2399 ci
->hwndPartner
= pConv
->hwndClient
;
2403 ci
->hUser
= pConv
->hUser
;
2412 pXAct
= WDML_FindTransaction(pConv
, id
);
2415 ci
->hUser
= pXAct
->hUser
;
2416 ci
->hszItem
= pXAct
->hszItem
;
2417 ci
->wFmt
= pXAct
->wFmt
;
2418 ci
->wType
= pXAct
->wType
;
2423 pConv
->instance
->lastError
= DMLERR_UNFOUND_QUEUE_ID
;
2429 /******************************************************************
2430 * DdeQueryConvInfo (USER32.@)
2432 * FIXME: Set last DDE error on failure.
2434 UINT WINAPI
DdeQueryConvInfo(HCONV hConv
, DWORD id
, PCONVINFO lpConvInfo
)
2436 UINT ret
= lpConvInfo
->cb
;
2440 TRACE("(%p,%x,%p)\n", hConv
, id
, lpConvInfo
);
2444 FIXME("hConv is NULL\n");
2448 pConv
= WDML_GetConv(hConv
, FALSE
);
2451 if (!WDML_GetLocalConvInfo(pConv
, &ci
, id
))
2456 if ((ULONG_PTR
)hConv
& 1)
2458 pConv
= WDML_GetConv((HCONV
)((ULONG_PTR
)hConv
& ~1), FALSE
);
2460 FIXME("Request on remote conversation information is not implemented yet\n");
2467 ci
.cb
= lpConvInfo
->cb
;
2468 memcpy(lpConvInfo
, &ci
, min((size_t)lpConvInfo
->cb
, sizeof(ci
)));
2473 /* ================================================================
2475 * Information broadcast across DDEML implementations
2477 * ================================================================ */
2479 struct tagWDML_BroadcastPmt
2487 /******************************************************************
2488 * WDML_BroadcastEnumProc
2492 static BOOL CALLBACK
WDML_BroadcastEnumProc(HWND hWnd
, LPARAM lParam
)
2494 struct tagWDML_BroadcastPmt
* s
= (struct tagWDML_BroadcastPmt
*)lParam
;
2497 if (GetClassNameW(hWnd
, buffer
, 128) > 0 &&
2498 lstrcmpiW(buffer
, s
->clsName
) == 0)
2500 PostMessageW(hWnd
, s
->uMsg
, s
->wParam
, s
->lParam
);
2505 /******************************************************************
2506 * WDML_BroadcastDDEWindows
2510 void WDML_BroadcastDDEWindows(LPCWSTR clsName
, UINT uMsg
, WPARAM wParam
, LPARAM lParam
)
2512 struct tagWDML_BroadcastPmt s
;
2514 s
.clsName
= clsName
;
2518 EnumWindows(WDML_BroadcastEnumProc
, (LPARAM
)&s
);