2 * Message queues definitions
4 * Copyright 1993 Alexandre Julliard
16 /* Message as stored in the queue (contains the extraInfo field) */
17 typedef struct tagQMSG
21 DWORD extraInfo
; /* Only in 3.1 */
23 struct tagQMSG
*nextMsg
;
24 struct tagQMSG
*prevMsg
;
30 #define QMSG_HARDWARE 3
33 typedef struct tagSMSG
35 struct tagSMSG
*nextProcessing
; /* next SMSG in the processing list */
36 struct tagSMSG
*nextPending
; /* next SMSG in the pending list */
37 struct tagSMSG
*nextWaiting
; /* next SMSG in the waiting list */
39 HQUEUE16 hSrcQueue
; /* sending Queue, (NULL if it didn't wait) */
40 HQUEUE16 hDstQueue
; /* destination Queue */
42 HWND hWnd
; /* destinantion window */
43 UINT msg
; /* message sent */
44 WPARAM wParam
; /* wParam of the sent message */
45 LPARAM lParam
; /* lParam of the sent message */
47 LRESULT lResult
; /* result of SendMessage */
48 WORD flags
; /* see below SMSG_XXXX */
52 /* SMSG -> flags values */
53 /* set when lResult contains a good value */
54 #define SMSG_HAVE_RESULT 0x0001
55 /* protection for multiple call to ReplyMessage16() */
56 #define SMSG_ALREADY_REPLIED 0x0002
57 /* use with EARLY_REPLY for forcing the receiver to clean SMSG */
58 #define SMSG_RECEIVER_CLEANS 0x0010
59 /* used with EARLY_REPLY to indicate to sender, receiver is done with SMSG */
60 #define SMSG_RECEIVED 0x0020
61 /* set in ReceiveMessage() to indicate it's not an early reply */
62 #define SMSG_SENDING_REPLY 0x0040
63 /* set when ReplyMessage16() is called by the application */
64 #define SMSG_EARLY_REPLY 0x0080
65 /* set when sender is Win32 thread */
66 #define SMSG_WIN32 0x1000
67 /* set when sender is a unnicode thread */
68 #define SMSG_UNICODE 0x2000
70 /* Per-queue data for the message queue
71 * Note that we currently only store the current values for
72 * Active, Capture and Focus windows currently.
73 * It might be necessary to store a pointer to the system message queue
74 * as well since windows 9x maintains per thread system message queues
76 typedef struct tagPERQUEUEDATA
78 HWND hWndFocus
; /* Focus window */
79 HWND hWndActive
; /* Active window */
80 HWND hWndCapture
; /* Capture window */
81 INT16 nCaptureHT
; /* Capture info (hit-test) */
82 ULONG ulRefCount
; /* Reference count */
83 CRITICAL_SECTION cSection
; /* Critical section for thread safe access */
87 typedef struct tagMESSAGEQUEUE
89 HQUEUE16 next
; /* Next queue */
90 HQUEUE16 self
; /* Handle to self (was: reserved) */
91 TEB
* teb
; /* Thread owning queue */
92 HANDLE hEvent
; /* Event handle */
93 CRITICAL_SECTION cSection
; /* Queue access critical section */
95 DWORD magic
; /* magic number should be QUEUE_MAGIC */
96 DWORD lockCount
; /* reference counter */
97 WORD wWinVersion
; /* Expected Windows version */
99 WORD msgCount
; /* Number of waiting messages */
100 QMSG
* firstMsg
; /* First message in linked list */
101 QMSG
* lastMsg
; /* Last message in linked list */
103 WORD wPostQMsg
; /* PostQuitMessage flag */
104 WORD wExitCode
; /* PostQuitMessage exit code */
105 WORD wPaintCount
; /* Number of WM_PAINT needed */
106 WORD wTimerCount
; /* Number of timers for this task */
108 WORD changeBits
; /* Changed wake-up bits */
109 WORD wakeBits
; /* Queue wake-up bits */
110 WORD wakeMask
; /* Queue wake-up mask */
112 DWORD GetMessageTimeVal
; /* Value for GetMessageTime */
113 DWORD GetMessagePosVal
; /* Value for GetMessagePos */
114 DWORD GetMessageExtraInfoVal
; /* Value for GetMessageExtraInfo */
116 SMSG
* smWaiting
; /* SendMessage waiting for reply */
117 SMSG
* smProcessing
; /* SendMessage currently being processed */
118 SMSG
* smPending
; /* SendMessage waiting to be received */
120 HANDLE16 hCurHook
; /* Current hook */
121 HANDLE16 hooks
[WH_NB_HOOKS
]; /* Task hooks list */
123 PERQUEUEDATA
*pQData
; /* pointer to (shared) PERQUEUEDATA structure */
128 /* Extra (undocumented) queue wake bits - see "Undoc. Windows" */
129 #define QS_SMRESULT 0x8000 /* Queue has a SendMessage() result */
131 /* Types of SMSG stack */
132 #define SM_PROCESSING_LIST 1 /* list of SM currently being processed */
133 #define SM_PENDING_LIST 2 /* list of SM wating to be received */
134 #define SM_WAITING_LIST 3 /* list of SM waiting for reply */
136 #define QUEUE_MAGIC 0xD46E80AF
138 /* Per queue data management methods */
139 PERQUEUEDATA
* PERQDATA_CreateInstance( void );
140 ULONG
PERQDATA_Addref( PERQUEUEDATA
* pQData
);
141 ULONG
PERQDATA_Release( PERQUEUEDATA
* pQData
);
142 HWND
PERQDATA_GetFocusWnd( PERQUEUEDATA
*pQData
);
143 HWND
PERQDATA_SetFocusWnd( PERQUEUEDATA
*pQData
, HWND hWndFocus
);
144 HWND
PERQDATA_GetActiveWnd( PERQUEUEDATA
*pQData
);
145 HWND
PERQDATA_SetActiveWnd( PERQUEUEDATA
*pQData
, HWND hWndActive
);
146 HWND
PERQDATA_GetCaptureWnd( PERQUEUEDATA
*pQData
);
147 HWND
PERQDATA_SetCaptureWnd( PERQUEUEDATA
*pQData
, HWND hWndCapture
);
148 INT16
PERQDATA_GetCaptureInfo( PERQUEUEDATA
*pQData
);
149 INT16
PERQDATA_SetCaptureInfo( PERQUEUEDATA
*pQData
, INT16 nCaptureHT
);
151 /* Message queue management methods */
152 extern MESSAGEQUEUE
*QUEUE_Lock( HQUEUE16 hQueue
);
153 extern void QUEUE_Unlock( MESSAGEQUEUE
*queue
);
154 extern void QUEUE_DumpQueue( HQUEUE16 hQueue
);
155 extern void QUEUE_WalkQueues(void);
156 extern BOOL
QUEUE_IsExitingQueue( HQUEUE16 hQueue
);
157 extern void QUEUE_SetExitingQueue( HQUEUE16 hQueue
);
158 extern MESSAGEQUEUE
*QUEUE_GetSysQueue(void);
159 extern void QUEUE_SetWakeBit( MESSAGEQUEUE
*queue
, WORD bit
);
160 extern void QUEUE_ClearWakeBit( MESSAGEQUEUE
*queue
, WORD bit
);
161 extern void QUEUE_ReceiveMessage( MESSAGEQUEUE
*queue
);
162 extern int QUEUE_WaitBits( WORD bits
, DWORD timeout
);
163 extern void QUEUE_IncPaintCount( HQUEUE16 hQueue
);
164 extern void QUEUE_DecPaintCount( HQUEUE16 hQueue
);
165 extern void QUEUE_IncTimerCount( HQUEUE16 hQueue
);
166 extern void QUEUE_DecTimerCount( HQUEUE16 hQueue
);
167 extern BOOL
QUEUE_CreateSysMsgQueue( int size
);
168 extern BOOL
QUEUE_DeleteMsgQueue( HQUEUE16 hQueue
);
169 extern HTASK16
QUEUE_GetQueueTask( HQUEUE16 hQueue
);
170 extern BOOL
QUEUE_AddMsg( HQUEUE16 hQueue
, int type
, MSG
* msg
, DWORD extraInfo
);
171 extern QMSG
* QUEUE_FindMsg( MESSAGEQUEUE
* msgQueue
, HWND hwnd
,
172 int first
, int last
);
173 extern void QUEUE_RemoveMsg( MESSAGEQUEUE
* msgQueue
, QMSG
*qmsg
);
174 extern SMSG
*QUEUE_RemoveSMSG( MESSAGEQUEUE
*queue
, int list
, SMSG
*smsg
);
175 extern BOOL
QUEUE_AddSMSG( MESSAGEQUEUE
*queue
, int list
, SMSG
*smsg
);
176 extern void hardware_event( UINT message
, WPARAM wParam
, LPARAM lParam
,
177 int xPos
, int yPos
, DWORD time
, DWORD extraInfo
);
179 extern HQUEUE16 WINAPI
InitThreadInput16( WORD unknown
, WORD flags
);
181 #endif /* __WINE_QUEUE_H */