source: trunk/include/win/queue.h@ 1872

Last change on this file since 1872 was 4, checked in by ktk, 26 years ago

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1/* $Id: queue.h,v 1.1 1999-05-24 20:19:18 ktk Exp $ */
2
3/*
4 * Message queues definitions
5 *
6 * Copyright 1993 Alexandre Julliard
7 */
8
9#ifndef __WINE_QUEUE_H
10#define __WINE_QUEUE_H
11
12#include "windef.h"
13#include "winuser.h"
14#include "thread.h"
15
16
17 /* Message as stored in the queue (contains the extraInfo field) */
18typedef struct tagQMSG
19{
20 MSG msg;
21 DWORD extraInfo; /* Only in 3.1 */
22
23 struct tagQMSG *nextMsg;
24 struct tagQMSG *prevMsg;
25} QMSG;
26
27
28typedef struct tagSMSG
29{
30 struct tagSMSG *nextProcessing; /* next SMSG in the processing list */
31 struct tagSMSG *nextPending; /* next SMSG in the pending list */
32 struct tagSMSG *nextWaiting; /* next SMSG in the waiting list */
33
34 HQUEUE16 hSrcQueue; /* sending Queue, (NULL if it didn't wait) */
35 HQUEUE16 hDstQueue; /* destination Queue */
36
37 HWND hWnd; /* destinantion window */
38 UINT msg; /* message sent */
39 WPARAM wParam; /* wParam of the sent message */
40 LPARAM lParam; /* lParam of the sent message */
41
42 LRESULT lResult; /* result of SendMessage */
43 WORD flags; /* see below SMSG_XXXX */
44} SMSG;
45
46
47/* SMSG -> flags values */
48/* set when lResult contains a good value */
49#define SMSG_HAVE_RESULT 0x0001
50/* protection for multiple call to ReplyMessage16() */
51#define SMSG_ALREADY_REPLIED 0x0002
52/* use with EARLY_REPLY for forcing the receiver to clean SMSG */
53#define SMSG_RECEIVER_CLEANS 0x0010
54/* used with EARLY_REPLY to indicate to sender, receiver is done with SMSG */
55#define SMSG_RECEIVED 0x0020
56/* set in ReceiveMessage() to indicate it's not an early reply */
57#define SMSG_SENDING_REPLY 0x0040
58/* set when ReplyMessage16() is called by the application */
59#define SMSG_EARLY_REPLY 0x0080
60/* set when sender is Win32 thread */
61#define SMSG_WIN32 0x1000
62/* set when sender is a unnicode thread */
63#define SMSG_UNICODE 0x2000
64
65/* Per-queue data for the message queue
66 * Note that we currently only store the current values for
67 * Active, Capture and Focus windows currently.
68 * It might be necessary to store a pointer to the system message queue
69 * as well since windows 9x maintains per thread system message queues
70 */
71typedef struct tagPERQUEUEDATA
72{
73 HWND hWndFocus; /* Focus window */
74 HWND hWndActive; /* Active window */
75 HWND hWndCapture; /* Capture window */
76 INT16 nCaptureHT; /* Capture info (hit-test) */
77 ULONG ulRefCount; /* Reference count */
78 CRITICAL_SECTION cSection; /* Critical section for thread safe access */
79} PERQUEUEDATA;
80
81/* Message queue */
82typedef struct tagMESSAGEQUEUE
83{
84 HQUEUE16 next; /* Next queue */
85 HQUEUE16 self; /* Handle to self (was: reserved) */
86 THDB* thdb; /* Thread owning queue */
87 HANDLE hEvent; /* Event handle */
88 CRITICAL_SECTION cSection; /* Queue access critical section */
89
90 DWORD magic; /* magic number should be QUEUE_MAGIC */
91 DWORD lockCount; /* reference counter */
92 WORD wWinVersion; /* Expected Windows version */
93
94 WORD msgCount; /* Number of waiting messages */
95 QMSG* firstMsg; /* First message in linked list */
96 QMSG* lastMsg; /* Last message in linked list */
97
98 WORD wPostQMsg; /* PostQuitMessage flag */
99 WORD wExitCode; /* PostQuitMessage exit code */
100 WORD wPaintCount; /* Number of WM_PAINT needed */
101 WORD wTimerCount; /* Number of timers for this task */
102
103 WORD changeBits; /* Changed wake-up bits */
104 WORD wakeBits; /* Queue wake-up bits */
105 WORD wakeMask; /* Queue wake-up mask */
106
107 DWORD GetMessageTimeVal; /* Value for GetMessageTime */
108 DWORD GetMessagePosVal; /* Value for GetMessagePos */
109 DWORD GetMessageExtraInfoVal; /* Value for GetMessageExtraInfo */
110
111 SMSG* smWaiting; /* SendMessage waiting for reply */
112 SMSG* smProcessing; /* SendMessage currently being processed */
113 SMSG* smPending; /* SendMessage waiting to be received */
114
115 HANDLE16 hCurHook; /* Current hook */
116 HANDLE16 hooks[WH_NB_HOOKS]; /* Task hooks list */
117
118 PERQUEUEDATA *pQData; /* pointer to (shared) PERQUEUEDATA structure */
119
120} MESSAGEQUEUE;
121
122
123/* Extra (undocumented) queue wake bits - see "Undoc. Windows" */
124#define QS_SMRESULT 0x8000 /* Queue has a SendMessage() result */
125
126/* Types of SMSG stack */
127#define SM_PROCESSING_LIST 1 /* list of SM currently being processed */
128#define SM_PENDING_LIST 2 /* list of SM wating to be received */
129#define SM_WAITING_LIST 3 /* list of SM waiting for reply */
130
131#define QUEUE_MAGIC 0xD46E80AF
132
133/* Per queue data management methods */
134PERQUEUEDATA* PERQDATA_CreateInstance( void );
135ULONG PERQDATA_Addref( PERQUEUEDATA* pQData );
136ULONG PERQDATA_Release( PERQUEUEDATA* pQData );
137HWND PERQDATA_GetFocusWnd( PERQUEUEDATA *pQData );
138HWND PERQDATA_SetFocusWnd( PERQUEUEDATA *pQData, HWND hWndFocus );
139HWND PERQDATA_GetActiveWnd( PERQUEUEDATA *pQData );
140HWND PERQDATA_SetActiveWnd( PERQUEUEDATA *pQData, HWND hWndActive );
141HWND PERQDATA_GetCaptureWnd( PERQUEUEDATA *pQData );
142HWND PERQDATA_SetCaptureWnd( PERQUEUEDATA *pQData, HWND hWndCapture );
143INT16 PERQDATA_GetCaptureInfo( PERQUEUEDATA *pQData );
144INT16 PERQDATA_SetCaptureInfo( PERQUEUEDATA *pQData, INT16 nCaptureHT );
145
146/* Message queue management methods */
147extern MESSAGEQUEUE *QUEUE_Lock( HQUEUE16 hQueue );
148extern void QUEUE_Unlock( MESSAGEQUEUE *queue );
149extern void QUEUE_DumpQueue( HQUEUE16 hQueue );
150extern void QUEUE_WalkQueues(void);
151extern BOOL QUEUE_IsExitingQueue( HQUEUE16 hQueue );
152extern void QUEUE_SetExitingQueue( HQUEUE16 hQueue );
153extern MESSAGEQUEUE *QUEUE_GetSysQueue(void);
154extern void QUEUE_SetWakeBit( MESSAGEQUEUE *queue, WORD bit );
155extern void QUEUE_ClearWakeBit( MESSAGEQUEUE *queue, WORD bit );
156extern void QUEUE_ReceiveMessage( MESSAGEQUEUE *queue );
157extern int QUEUE_WaitBits( WORD bits, DWORD timeout );
158extern void QUEUE_IncPaintCount( HQUEUE16 hQueue );
159extern void QUEUE_DecPaintCount( HQUEUE16 hQueue );
160extern void QUEUE_IncTimerCount( HQUEUE16 hQueue );
161extern void QUEUE_DecTimerCount( HQUEUE16 hQueue );
162extern BOOL QUEUE_CreateSysMsgQueue( int size );
163extern BOOL QUEUE_DeleteMsgQueue( HQUEUE16 hQueue );
164extern HTASK16 QUEUE_GetQueueTask( HQUEUE16 hQueue );
165extern BOOL QUEUE_AddMsg( HQUEUE16 hQueue, MSG * msg, DWORD extraInfo );
166extern QMSG* QUEUE_FindMsg( MESSAGEQUEUE * msgQueue, HWND hwnd,
167 int first, int last );
168extern void QUEUE_RemoveMsg( MESSAGEQUEUE * msgQueue, QMSG *qmsg );
169extern SMSG *QUEUE_RemoveSMSG( MESSAGEQUEUE *queue, int list, SMSG *smsg );
170extern BOOL QUEUE_AddSMSG( MESSAGEQUEUE *queue, int list, SMSG *smsg );
171extern void hardware_event( WORD message, WORD wParam, LONG lParam,
172 int xPos, int yPos, DWORD time, DWORD extraInfo );
173
174extern HQUEUE16 WINAPI InitThreadInput16( WORD unknown, WORD flags );
175
176#endif /* __WINE_QUEUE_H */
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