include/message.h

   1 /*
   2  * Message queues definitions
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  */
   6
   7 #ifndef MESSAGE_H
   8 #define MESSAGE_H
   9
  10 #include "windows.h"
  11
  12 #ifndef WINELIB
  13 #pragma pack(1)
  14 #endif
  15
  16   /* Message as stored in the queue (contains the extraInfo field) */
  17 typedef struct tagQMSG
  18 {
  19     DWORD   extraInfo;  /* Only in 3.1 */
  20     MSG     msg;
  21 } QMSG;
  22
  23
  24 typedef struct tagMESSAGEQUEUE
  25 {
  26   WORD      next;                   /* 00 Next queue */
  27   HTASK     hTask;                  /* 02 hTask owning the queue */
  28   WORD      msgSize;                /* 04 Size of messages in the queue */
  29   WORD      msgCount;               /* 06 Number of waiting messages */
  30   WORD      nextMessage;            /* 08 Next message to be retrieved */
  31   WORD      nextFreeMessage;        /* 0a Next available slot in the queue */
  32   WORD      queueSize;              /* 0c Size of the queue */
  33   DWORD     GetMessageTimeVal WINE_PACKED;  /* 0e Value for GetMessageTime */
  34   DWORD     GetMessagePosVal WINE_PACKED;   /* 12 Value for GetMessagePos */
  35   WORD      reserved1;              /* 16 Unknown */
  36   DWORD     GetMessageExtraInfoVal; /* 18 Value for GetMessageExtraInfo */
  37   WORD      reserved2;              /* 1c Unknown */
  38   LPARAM    lParam WINE_PACKED;     /* 1e Next 4 values set by SendMessage */
  39   WPARAM    wParam;                 /* 22 */
  40   UINT      msg;                    /* 24 */
  41   HWND      hWnd;                   /* 26 */
  42   DWORD     SendMessageReturn;      /* 28 Return value for SendMessage */
  43   WORD      wPostQMsg;              /* 2c PostQuitMessage flag */
  44   WORD      wExitCode;              /* 2e PostQuitMessage exit code */
  45   WORD      reserved3[3];           /* 30 Unknown */
  46   WORD      wWinVersion;            /* 36 Expected Windows version */
  47   HQUEUE    InSendMessageHandle;    /* 38 Queue of task that sent a message */
  48   HTASK     hSendingTask;           /* 3a Handle of task that sent a message */
  49   HTASK     hPrevSendingTask;       /* 3c Handle of previous sender */
  50   WORD      wPaintCount;            /* 3e Number of WM_PAINT needed */
  51   WORD      wTimerCount;            /* 40 Number of timers for this task */
  52   WORD      tempStatus;             /* 42 State reset by GetQueueStatus */
  53   WORD      status;                 /* 44 Queue state */
  54   WORD      wakeMask;               /* 46 Task wake-up mask */
  55   WORD      SendMsgReturnPtrs[3];   /* 48 Near ptr to return values (?) */
  56   HANDLE    hCurHook;               /* 4e Current hook */
  57   HANDLE    hooks[WH_NB_HOOKS];     /* 50 Task hooks list */
  58   WORD      reserved4[3];           /* 68 Unknown */
  59   QMSG      messages[1];            /* 6e Queue messages */
  60 } MESSAGEQUEUE;
  61
  62 #ifndef WINELIB
  63 #pragma pack(4)
  64 #endif
  65
  66 extern void MSG_IncPaintCount( HANDLE hQueue );
  67 extern void MSG_DecPaintCount( HANDLE hQueue );
  68 extern void MSG_IncTimerCount( HANDLE hQueue );
  69 extern void MSG_DecTimerCount( HANDLE hQueue );
  70 extern void MSG_Synchronize();
  71 extern BOOL MSG_WaitXEvent( LONG maxWait );
  72 extern BOOL MSG_CreateSysMsgQueue( int size );
  73 extern void hardware_event( WORD message, WORD wParam, LONG lParam,
  74                             int xPos, int yPos, DWORD time, DWORD extraInfo );
  75 extern BOOL MSG_GetHardwareMessage( LPMSG msg );
  76 extern BOOL MSG_InternalGetMessage( SEGPTR msg, HWND hwnd, HWND hwndOwner,
  77                                     short code, WORD flags, BOOL sendIdle );
  78
  79 #endif  /* MESSAGE_H */