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SHAREDMEMORY_HEADER structure

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Stores information about shared memory sections.

Syntax

typedef struct _SHAREDMEMORY_HEADER {
  DWORD             cbTotal;
  DWORD             cbOffsetSns;
  DWORD             idxEvent;
  DWORD             dwEvent;
  CURSOR_ID         cid;
  DWORD             sn;
  SYSTEM_EVENT      sysEvt;
  SYSTEM_EVENT_DATA sysEvtData;
  DWORD             cPackets;
  DWORD             cbPackets;
  BOOL              fSnsPresent;
} SHAREDMEMORY_HEADER, *PSHAREDMEMORY_HEADER;

Members

cbTotal

The size, in bytes, of the data referenced by this header structure.

cbOffsetSns

The size, in bytes, that the serial numbers are offset from the header structure.

idxEvent

The event index. This value is incremented with successive events.

dwEvent

The event associated with this header.

cid

The cursor identifier referenced by the shared memory header.

sn

The serial number for the shared memory header.

sysEvt

The system event, prefixed SE_*, associated with this header. See the remarks section for more information.

sysEvtData

The SYSTEM_EVENT_DATA structure associated with the system event.

cPackets

A count of the packets associated with the current shared memory section.

cbPackets

The size, in bytes, of the packets associated with the current shared memory section.

fSnsPresent

A flag indicating whether serial numbers are present in the current shared memory section.

Remarks

The following values are defined for the sysEvt member.

#define SE_NONE                  0x00000000
#define SE_TAP                   0x00000010
#define SE_DBL_TAP               0x00000011
#define SE_RIGHT_TAP             0x00000012
#define SE_DRAG                  0x00000013
#define SE_RIGHT_DRAG            0x00000014
#define SE_HOLD_ENTER            0x00000015
#define SE_HOLD_LEAVE            0x00000016
#define SE_HOVER_ENTER           0x00000017
#define SE_HOVER_LEAVE           0x00000018
#define SE_FLICK                 0x0000001F

See also

SYSTEM_EVENT_DATA