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nephacks
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public/wintab/include/pktdef.h
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233
public/wintab/include/pktdef.h
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/* -------------------------------- pktdef.h -------------------------------- */
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/* Combined 16 & 32-bit version. */
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/*------------------------------------------------------------------------------
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The text and information contained in this file may be freely used,
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copied, or distributed without compensation or licensing restrictions.
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This file is copyright 1991-1998 by LCS/Telegraphics.
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------------------------------------------------------------------------------*/
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/*------------------------------------------------------------------------------
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How to use pktdef.h:
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1. Include wintab.h
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2. if using just one packet format:
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a. Define PACKETDATA and PACKETMODE as or'ed combinations of WTPKT bits
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(use the PK_* identifiers).
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b. Include pktdef.h.
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c. The generated structure typedef will be called PACKET. Use PACKETDATA
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and PACKETMODE to fill in the LOGCONTEXT structure.
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3. If using multiple packet formats, for each one:
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a. Define PACKETNAME. Its text value will be a prefix for this packet's
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parameters and names.
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b. Define <PACKETNAME>PACKETDATA and <PACKETNAME>PACKETMODE similar to
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2.a. above.
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c. Include pktdef.h.
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d. The generated structure typedef will be called
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<PACKETNAME>PACKET. Compare with 2.c. above and example #2 below.
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4. If using extension packet data, do the following additional steps
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for each extension:
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a. Before including pktdef.h, define <PACKETNAME>PACKET<EXTENSION>
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as either PKEXT_ABSOLUTE or PKEXT_RELATIVE.
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b. The generated structure typedef will contain a field for the
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extension data.
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c. Scan the WTI_EXTENSION categories to find the extension's
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packet mask bit.
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d. OR the packet mask bit with <PACKETNAME>PACKETDATA and use the
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result in the lcPktData field of the LOGCONTEXT structure.
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e. If <PACKETNAME>PACKET<EXTENSION> was PKEXT_RELATIVE, OR the
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packet mask bit with <PACKETNAME>PACKETMODE and use the result
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in the lcPktMode field of the LOGCONTEXT structure.
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Example #1. -- single packet format
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#include <wintab.h>
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#define PACKETDATA PK_X | PK_Y | PK_BUTTONS /@ x, y, buttons @/
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#define PACKETMODE PK_BUTTONS /@ buttons relative mode @/
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#include <pktdef.h>
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...
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lc.lcPktData = PACKETDATA;
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lc.lcPktMode = PACKETMODE;
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Example #2. -- multiple formats
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#include <wintab.h>
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#define PACKETNAME MOE
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#define MOEPACKETDATA PK_X | PK_Y | PK_BUTTONS /@ x, y, buttons @/
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#define MOEPACKETMODE PK_BUTTONS /@ buttons relative mode @/
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#include <pktdef.h>
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#define PACKETNAME LARRY
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#define LARRYPACKETDATA PK_Y | PK_Z | PK_BUTTONS /@ y, z, buttons @/
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#define LARRYPACKETMODE PK_BUTTONS /@ buttons relative mode @/
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#include <pktdef.h>
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#define PACKETNAME CURLY
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#define CURLYPACKETDATA PK_X | PK_Z | PK_BUTTONS /@ x, z, buttons @/
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#define CURLYPACKETMODE PK_BUTTONS /@ buttons relative mode @/
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#include <pktdef.h>
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...
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lcMOE.lcPktData = MOEPACKETDATA;
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lcMOE.lcPktMode = MOEPACKETMODE;
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...
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lcLARRY.lcPktData = LARRYPACKETDATA;
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lcLARRY.lcPktMode = LARRYPACKETMODE;
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...
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lcCURLY.lcPktData = CURLYPACKETDATA;
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lcCURLY.lcPktMode = CURLYPACKETMODE;
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Example #3. -- extension packet data "XFOO".
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#include <wintab.h>
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#define PACKETDATA PK_X | PK_Y | PK_BUTTONS /@ x, y, buttons @/
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#define PACKETMODE PK_BUTTONS /@ buttons relative mode @/
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#define PACKETXFOO PKEXT_ABSOLUTE /@ XFOO absolute mode @/
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#include <pktdef.h>
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...
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UINT ScanExts(UINT wTag)
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{
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UINT i;
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UINT wScanTag;
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/@ scan for wTag's info category. @/
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for (i = 0; WTInfo(WTI_EXTENSIONS + i, EXT_TAG, &wScanTag); i++) {
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if (wTag == wScanTag) {
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/@ return category offset from WTI_EXTENSIONS. @/
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return i;
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}
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}
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/@ return error code. @/
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return 0xFFFF;
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}
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...
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lc.lcPktData = PACKETDATA;
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lc.lcPktMode = PACKETMODE;
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#ifdef PACKETXFOO
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categoryXFOO = ScanExts(WTX_XFOO);
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WTInfo(WTI_EXTENSIONS + categoryXFOO, EXT_MASK, &maskXFOO);
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lc.lcPktData |= maskXFOO;
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#if PACKETXFOO == PKEXT_RELATIVE
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lc.lcPktMode |= maskXFOO;
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#endif
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#endif
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WTOpen(hWnd, &lc, TRUE);
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------------------------------------------------------------------------------*/
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#ifndef PACKETNAME
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/* if no packet name prefix */
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#define __PFX(x) x
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#define __IFX(x,y) x ## y
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#else
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/* add prefixes and infixes to packet format names */
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#define __PFX(x) __PFX2(PACKETNAME,x)
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#define __PFX2(p,x) __PFX3(p,x)
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#define __PFX3(p,x) p ## x
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#define __IFX(x,y) __IFX2(x,PACKETNAME,y)
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#define __IFX2(x,i,y) __IFX3(x,i,y)
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#define __IFX3(x,i,y) x ## i ## y
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#endif
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#define __SFX2(x,s) __SFX3(x,s)
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#define __SFX3(x,s) x ## s
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#define __TAG __IFX(tag,PACKET)
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#define __TYPES __PFX(PACKET), * __IFX(P,PACKET), NEAR * __IFX(NP,PACKET), \
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FAR * __IFX(LP,PACKET)
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#define __DATA (__PFX(PACKETDATA))
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#define __MODE (__PFX(PACKETMODE))
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#define __EXT(x) __SFX2(__PFX(PACKET),x)
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typedef struct __TAG {
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#if (__DATA & PK_CONTEXT)
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HCTX pkContext;
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#endif
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#if (__DATA & PK_STATUS)
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UINT pkStatus;
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#endif
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#if (__DATA & PK_TIME)
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DWORD pkTime;
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#endif
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#if (__DATA & PK_CHANGED)
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WTPKT pkChanged;
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#endif
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#if (__DATA & PK_SERIAL_NUMBER)
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UINT pkSerialNumber;
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#endif
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#if (__DATA & PK_CURSOR)
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UINT pkCursor;
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#endif
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#if (__DATA & PK_BUTTONS)
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DWORD pkButtons;
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#endif
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#if (__DATA & PK_X)
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LONG pkX;
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#endif
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#if (__DATA & PK_Y)
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LONG pkY;
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#endif
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#if (__DATA & PK_Z)
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LONG pkZ;
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#endif
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#if (__DATA & PK_NORMAL_PRESSURE)
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#if (__MODE & PK_NORMAL_PRESSURE)
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/* relative */
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int pkNormalPressure;
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#else
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/* absolute */
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UINT pkNormalPressure;
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#endif
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#endif
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#if (__DATA & PK_TANGENT_PRESSURE)
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#if (__MODE & PK_TANGENT_PRESSURE)
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/* relative */
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int pkTangentPressure;
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#else
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/* absolute */
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UINT pkTangentPressure;
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#endif
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#endif
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#if (__DATA & PK_ORIENTATION)
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ORIENTATION pkOrientation;
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#endif
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#if (__DATA & PK_ROTATION)
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ROTATION pkRotation; /* 1.1 */
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#endif
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#ifndef NOWTEXTENSIONS
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/* extensions begin here. */
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#if (__EXT(FKEYS) == PKEXT_RELATIVE) || (__EXT(FKEYS) == PKEXT_ABSOLUTE)
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UINT pkFKeys;
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#endif
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#if (__EXT(TILT) == PKEXT_RELATIVE) || (__EXT(TILT) == PKEXT_ABSOLUTE)
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TILT pkTilt;
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#endif
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#endif
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} __TYPES ;
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#undef PACKETNAME
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#undef __TAG
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#undef __TAG2
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#undef __TYPES
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#undef __TYPES2
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#undef __DATA
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#undef __MODE
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#undef __PFX
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#undef __PFX2
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#undef __PFX3
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#undef __IFX
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#undef __IFX2
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#undef __IFX3
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#undef __SFX2
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#undef __SFX3
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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