Sweden-Number/dlls/user/dde/dde_private.h

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/* -*- tab-width: 8; c-basic-offset: 4 -*- */
/*
* DDEML library
*
* Copyright 1997 Alexandre Julliard
* Copyright 1997 Len White
* Copyright 1999 Keith Matthews
* Copyright 2000 Corel
* Copyright 2001 Eric Pouech
*/
#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 registring 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
{
short 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,
DWORD dwData1, DWORD 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);
/* 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(const char* 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 char WDML_szEventClass[]; /* class of window for events (aka instance) */
extern const char WDML_szServerConvClassA[]; /* class of window for server side conv (ansi) */
extern const WCHAR WDML_szServerConvClassW[]; /* class of window for server side conv (unicode) */
extern const char WDML_szClientConvClassA[]; /* class of window for client side conv (ansi) */
extern const WCHAR WDML_szClientConvClassW[]; /* class of window for client side conv (unicode) */
#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 (4)
#define GWL_WDML_SERVER (4)
#endif /* __WINE_DDEML_PRIVATE_H */