include/queue.h

   1 /*
   2  * Message queues definitions
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  */
   6
   7 #ifndef __WINE_QUEUE_H
   8 #define __WINE_QUEUE_H
   9
  10 #include "windef.h"
  11 #include "winbase.h"
  12 #include "wingdi.h"
  13 #include "winuser.h"
  14 #include "thread.h"
  15
  16 #define WH_NB_HOOKS (WH_MAXHOOK-WH_MINHOOK+1)
  17
  18 /* Per-queue data for the message queue
  19  * Note that we currently only store the current values for
  20  * Active, Capture and Focus windows currently.
  21  * It might be necessary to store a pointer to the system message queue
  22  * as well since windows 9x maintains per thread system message queues
  23  */
  24 typedef struct tagPERQUEUEDATA
  25 {
  26   HWND    hWndFocus;              /* Focus window */
  27   HWND    hWndActive;             /* Active window */
  28   HWND    hWndCapture;            /* Capture window */
  29   INT16     nCaptureHT;             /* Capture info (hit-test) */
  30   ULONG     ulRefCount;             /* Reference count */
  31   CRITICAL_SECTION cSection;        /* Critical section for thread safe access */
  32 } PERQUEUEDATA;
  33
  34 struct received_message_info;
  35
  36 /* Message queue */
  37 typedef struct tagMESSAGEQUEUE
  38 {
  39   HQUEUE16  self;                   /* Handle to self (was: reserved) */
  40   TEB*      teb;                    /* Thread owning queue */
  41   HANDLE    server_queue;           /* Handle to server-side queue */
  42   struct received_message_info *receive_info; /* Info about message being currently received */
  43
  44   DWORD     magic;                  /* magic number should be QUEUE_MAGIC */
  45   DWORD     lockCount;              /* reference counter */
  46
  47   DWORD     GetMessageTimeVal;      /* Value for GetMessageTime */
  48   DWORD     GetMessagePosVal;       /* Value for GetMessagePos */
  49   DWORD     GetMessageExtraInfoVal; /* Value for GetMessageExtraInfo */
  50
  51   HANDLE16  hCurHook;               /* Current hook */
  52   HANDLE16  hooks[WH_NB_HOOKS];     /* Task hooks list */
  53
  54   PERQUEUEDATA *pQData;             /* pointer to (shared) PERQUEUEDATA structure */
  55
  56 } MESSAGEQUEUE;
  57
  58
  59 #define QUEUE_MAGIC        0xD46E80AF
  60
  61 /* Per queue data management methods */
  62 HWND PERQDATA_GetFocusWnd( PERQUEUEDATA *pQData );
  63 HWND PERQDATA_SetFocusWnd( PERQUEUEDATA *pQData, HWND hWndFocus );
  64 HWND PERQDATA_GetActiveWnd( PERQUEUEDATA *pQData );
  65 HWND PERQDATA_SetActiveWnd( PERQUEUEDATA *pQData, HWND hWndActive );
  66 HWND PERQDATA_GetCaptureWnd( INT *hittest );
  67 HWND PERQDATA_SetCaptureWnd( HWND hWndCapture, INT hittest );
  68
  69 /* Message queue management methods */
  70 extern MESSAGEQUEUE *QUEUE_Current(void);
  71 extern MESSAGEQUEUE *QUEUE_Lock( HQUEUE16 hQueue );
  72 extern void QUEUE_Unlock( MESSAGEQUEUE *queue );
  73 extern void QUEUE_DeleteMsgQueue(void);
  74
  75 #endif  /* __WINE_QUEUE_H */