| /* |
| * DDEML library |
| * |
| * Copyright 1997 Alexandre Julliard |
| * Copyright 1997 Len White |
| * Copyright 1999 Keith Matthews |
| * Copyright 2000 Corel |
| * Copyright 2001 Eric Pouech |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #ifndef __WINE_DDEML_PRIVATE_H |
| #define __WINE_DDEML_PRIVATE_H |
| |
| /* defined in atom.c file. |
| */ |
| #define MAX_ATOM_LEN 255 |
| |
| /* Maximum buffer size ( including the '\0' ). |
| */ |
| #define MAX_BUFFER_LEN (MAX_ATOM_LEN + 1) |
| |
| /* The internal structures (prefixed by WDML) are used as follows: |
| * + a WDML_INSTANCE is created for each instance creation (DdeInitialize) |
| * - a popup window (InstanceClass) is created for each instance. |
| * - this window is used to receive all the DDEML events (server registration, |
| * conversation confirmation...). See the WM_WDML_???? messages for details |
| * + when registering a server (DdeNameService) a WDML_SERVER is created |
| * - a popup window (ServerNameClass) is created |
| * + a conversation is represented by two WDML_CONV structures: |
| * - one on the client side, the other one on the server side |
| * - this is needed because the address spaces may be different |
| * - therefore, two lists of links are kept for each instance |
| * - two windows are created for a conversation: |
| * o a popup window on client side (ClientConvClass) |
| * o a child window (of the ServerName) on the server side |
| * (ServerConvClass) |
| * - all the exchanges then take place between those two windows |
| * - windows for the conversation exist in two forms (Ansi & Unicode). This |
| * is only needed when a partner in a conv is not handled by DDEML. The |
| * type (A/W) of the window is used to handle the ansi <=> unicode |
| * transformations |
| * - two handles are created for a conversation (on each side). Each handle |
| * is linked to a structure. To help differentiate those handles, the |
| * local one has an even value, whereas the remote one has an odd value. |
| * + a (warm or link) is represented by two WDML_LINK structures: |
| * - one on client side, the other one on server side |
| * - therefore, two lists of links are kept for each instance |
| * |
| * To help getting back to data, WDML windows store information: |
| * - offset 0: the DDE instance |
| * - offset 4: the current conversation (for ClientConv and ServerConv only) |
| * |
| * All the implementation (client & server) makes the assumption that the other side |
| * is not always a DDEML partner. However, if it's the case, supplementary services |
| * are available (most notably the REGISTER/UNREGISTER and CONNECT_CONFIRM messages |
| * to the callback function). To be correct in every situation, all the basic |
| * exchanges are made using the 'pure' DDE protocol. A (future !) enhancement would |
| * be to provide a new protocol in the case were both partners are handled by DDEML. |
| * |
| * The StringHandles are in fact stored as local atoms. So an HSZ and a (local) atom |
| * can be used interchangably. However, in order to keep track of the allocated HSZ, |
| * and to free them upon instance termination, all HSZ are stored in a link list. |
| * When the HSZ need to be passed thru DDE messages, we need to convert them back and |
| * forth to global atoms. |
| */ |
| |
| /* this struct has the same mapping as all the DDE??? structures */ |
| typedef struct { |
| unsigned short unused:12, |
| fResponse:1, |
| fRelease:1, |
| fDeferUpd:1, |
| fAckReq:1; |
| short cfFormat; |
| } WINE_DDEHEAD; |
| |
| typedef struct tagHSZNode |
| { |
| struct tagHSZNode* next; |
| HSZ hsz; |
| unsigned refCount; |
| } HSZNode; |
| |
| typedef struct tagWDML_SERVER |
| { |
| struct tagWDML_SERVER* next; |
| HSZ hszService; |
| HSZ hszServiceSpec; |
| ATOM atomService; |
| ATOM atomServiceSpec; |
| BOOL filterOn; |
| HWND hwndServer; |
| } WDML_SERVER; |
| |
| typedef struct tagWDML_XACT { |
| struct tagWDML_XACT* next; /* list of transactions in conversation */ |
| DWORD xActID; |
| UINT ddeMsg; |
| HDDEDATA hDdeData; |
| DWORD dwTimeout; |
| DWORD hUser; |
| UINT wType; |
| UINT wFmt; |
| HSZ hszItem; |
| ATOM atom; /* as converted from or to hszItem */ |
| HGLOBAL hMem; |
| LPARAM lParam; /* useful for reusing */ |
| } WDML_XACT; |
| |
| typedef struct tagWDML_CONV |
| { |
| struct tagWDML_CONV* next; /* to link all the conversations */ |
| struct tagWDML_INSTANCE* instance; |
| HSZ hszService; /* pmt used for connection */ |
| HSZ hszTopic; /* pmt used for connection */ |
| UINT afCmd; /* service name flag */ |
| CONVCONTEXT convContext; |
| HWND hwndClient; /* source of conversation (ClientConvClass) */ |
| HWND hwndServer; /* destination of conversation (ServerConvClass) */ |
| WDML_XACT* transactions; /* pending transactions */ |
| DWORD hUser; /* user defined value */ |
| DWORD wStatus; /* same bits as convinfo.wStatus */ |
| DWORD wConvst; /* same values as convinfo.wConvst */ |
| } WDML_CONV; |
| |
| /* DDE_LINK struct defines hot, warm, and cold links */ |
| typedef struct tagWDML_LINK { |
| struct tagWDML_LINK* next; /* to link all the active links */ |
| HCONV hConv; /* to get back to the converstaion */ |
| UINT transactionType;/* 0 for no link */ |
| HSZ hszItem; /* item targetted for (hot/warm) link */ |
| UINT uFmt; /* format for data */ |
| } WDML_LINK; |
| |
| typedef struct tagWDML_INSTANCE |
| { |
| struct tagWDML_INSTANCE* next; |
| DWORD instanceID; /* needed to track monitor usage */ |
| DWORD threadID; /* needed to keep instance linked to a unique thread */ |
| BOOL monitor; /* have these two as full Booleans cos they'll be tested frequently */ |
| BOOL clientOnly; /* bit wasteful of space but it will be faster */ |
| BOOL unicode; /* Flag to indicate Win32 API used to initialise */ |
| BOOL win16; /* flag to indicate Win16 API used to initialize */ |
| HSZNode* nodeList; /* for cleaning upon exit */ |
| PFNCALLBACK callback; |
| DWORD CBFflags; |
| DWORD monitorFlags; |
| DWORD lastError; |
| HWND hwndEvent; |
| WDML_SERVER* servers; /* list of registered servers */ |
| WDML_CONV* convs[2]; /* active conversations for this instance (client and server) */ |
| WDML_LINK* links[2]; /* active links for this instance (client and server) */ |
| } WDML_INSTANCE; |
| |
| extern CRITICAL_SECTION WDML_CritSect; /* protection for instance list */ |
| |
| /* header for the DDE Data objects */ |
| typedef struct tagDDE_DATAHANDLE_HEAD |
| { |
| WORD cfFormat; |
| WORD bAppOwned; |
| } DDE_DATAHANDLE_HEAD; |
| |
| typedef enum tagWDML_SIDE |
| { |
| WDML_CLIENT_SIDE = 0, WDML_SERVER_SIDE = 1 |
| } WDML_SIDE; |
| |
| typedef enum { |
| WDML_QS_ERROR, WDML_QS_HANDLED, WDML_QS_PASS, WDML_QS_SWALLOWED, WDML_QS_BLOCK, |
| } WDML_QUEUE_STATE; |
| |
| extern HDDEDATA WDML_InvokeCallback(WDML_INSTANCE* pInst, UINT uType, UINT uFmt, HCONV hConv, |
| HSZ hsz1, HSZ hsz2, HDDEDATA hdata, |
| ULONG_PTR dwData1, ULONG_PTR dwData2); |
| extern HDDEDATA WDML_InvokeCallback16(PFNCALLBACK pfn, UINT uType, UINT uFmt, HCONV hConv, |
| HSZ hsz1, HSZ hsz2, HDDEDATA hdata, |
| DWORD dwData1, DWORD dwData2); |
| extern WDML_SERVER* WDML_AddServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic); |
| extern void WDML_RemoveServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic); |
| extern WDML_SERVER* WDML_FindServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic); |
| /* transaction handler on the server side */ |
| extern WDML_QUEUE_STATE WDML_ServerHandle(WDML_CONV* pConv, WDML_XACT* pXAct); |
| /* called both in DdeClientTransaction and server side. */ |
| extern UINT WDML_Initialize(LPDWORD pidInst, PFNCALLBACK pfnCallback, |
| DWORD afCmd, DWORD ulRes, BOOL bUnicode, BOOL b16); |
| extern WDML_CONV* WDML_AddConv(WDML_INSTANCE* pInstance, WDML_SIDE side, |
| HSZ hszService, HSZ hszTopic, HWND hwndClient, HWND hwndServer); |
| extern void WDML_RemoveConv(WDML_CONV* pConv, WDML_SIDE side); |
| extern WDML_CONV* WDML_GetConv(HCONV hConv, BOOL checkConnected); |
| extern WDML_CONV* WDML_GetConvFromWnd(HWND hWnd); |
| extern WDML_CONV* WDML_FindConv(WDML_INSTANCE* pInstance, WDML_SIDE side, |
| HSZ hszService, HSZ hszTopic); |
| extern BOOL WDML_PostAck(WDML_CONV* pConv, WDML_SIDE side, WORD appRetCode, |
| BOOL fBusy, BOOL fAck, UINT pmt, LPARAM lParam, UINT oldMsg); |
| extern void WDML_AddLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side, |
| UINT wType, HSZ hszItem, UINT wFmt); |
| extern WDML_LINK* WDML_FindLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side, |
| HSZ hszItem, BOOL use_fmt, UINT uFmt); |
| extern void WDML_RemoveLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side, |
| HSZ hszItem, UINT wFmt); |
| extern void WDML_RemoveAllLinks(WDML_INSTANCE* pInstance, WDML_CONV* pConv, WDML_SIDE side); |
| /* string internals */ |
| extern void WDML_FreeAllHSZ(WDML_INSTANCE* pInstance); |
| extern BOOL WDML_DecHSZ(WDML_INSTANCE* pInstance, HSZ hsz); |
| extern BOOL WDML_IncHSZ(WDML_INSTANCE* pInstance, HSZ hsz); |
| extern ATOM WDML_MakeAtomFromHsz(HSZ hsz); |
| extern HSZ WDML_MakeHszFromAtom(WDML_INSTANCE* pInstance, ATOM atom); |
| /* client calls these */ |
| extern WDML_XACT* WDML_AllocTransaction(WDML_INSTANCE* pInstance, UINT ddeMsg, UINT wFmt, HSZ hszItem); |
| extern void WDML_QueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct); |
| extern BOOL WDML_UnQueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct); |
| extern void WDML_FreeTransaction(WDML_INSTANCE* pInstance, WDML_XACT* pXAct, BOOL doFreePmt); |
| extern WDML_XACT* WDML_FindTransaction(WDML_CONV* pConv, DWORD tid); |
| extern HGLOBAL WDML_DataHandle2Global(HDDEDATA hDdeData, BOOL fResponse, BOOL fRelease, |
| BOOL fDeferUpd, BOOL dAckReq); |
| extern HDDEDATA WDML_Global2DataHandle(HGLOBAL hMem, WINE_DDEHEAD* da); |
| extern BOOL WDML_IsAppOwned(HDDEDATA hDdeData); |
| extern WDML_INSTANCE* WDML_GetInstance(DWORD InstId); |
| extern WDML_INSTANCE* WDML_GetInstanceFromWnd(HWND hWnd); |
| /* broadcasting to DDE windows */ |
| extern void WDML_BroadcastDDEWindows(LPCWSTR clsName, UINT uMsg, |
| WPARAM wParam, LPARAM lParam); |
| extern void WDML_NotifyThreadExit(DWORD tid); |
| |
| static inline void WDML_ExtractAck(WORD status, DDEACK* da) |
| { |
| *da = *((DDEACK*)&status); |
| } |
| |
| extern const WCHAR WDML_szEventClass[]; /* class of window for events (aka instance) */ |
| extern const char WDML_szServerConvClassA[]; /* ANSI class of window for server side conv */ |
| extern const WCHAR WDML_szServerConvClassW[]; /* unicode class of window for server side conv */ |
| extern const char WDML_szClientConvClassA[]; /* ANSI class of window for client side conv */ |
| extern const WCHAR WDML_szClientConvClassW[]; /* unicode class of window for client side conv */ |
| |
| #define WM_WDML_REGISTER (WM_USER + 0x200) |
| #define WM_WDML_UNREGISTER (WM_USER + 0x201) |
| #define WM_WDML_CONNECT_CONFIRM (WM_USER + 0x202) |
| |
| /* parameters for messages: |
| * wParam lParam |
| * Register atom for service name atom for service spec |
| * Unregister atom for service name atom for service spec |
| * ConnectConfirm client window handle server window handle |
| */ |
| |
| #define GWL_WDML_INSTANCE (0) |
| #define GWL_WDML_CONVERSATION (sizeof(ULONG_PTR)) |
| #define GWL_WDML_SERVER (sizeof(ULONG_PTR)) |
| |
| #endif /* __WINE_DDEML_PRIVATE_H */ |
