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zmouse.h：源码内容
							/****************************************************************************
*                                                                           *
* ZMOUSE.H -- Include file for IntelliMouse(tm) 1.0                         *
*                                                                           *
* NOTE:  Zmouse.h contains #defines required when providing IntelliMouse    *
*        wheel support for Windows95 and NT3.51.  Wheel is supported        *
*        natively in WinNT4.0, please refer to the NT4.0 SDK for more info  *
*        on providing support for IntelliMouse in NT4.0.                    *
*                                                                           *
* Copyright (c) 1983-1999, Microsoft Corp. All rights reserved.             *
*                                                                           *
***************************************************************************/
#if _MSC_VER > 1000
#pragma once
#endif
/**************************************************************************
	 Client Appplication (API) Defines for Wheel rolling
***************************************************************************/
// Apps need to call RegisterWindowMessage using the #define below to
// get the message number that is sent to the foreground window
// when a wheel roll occurs
#ifdef UNICODE
#define MSH_MOUSEWHEEL L"MSWHEEL_ROLLMSG"
#else
#define MSH_MOUSEWHEEL "MSWHEEL_ROLLMSG"
#endif
   // wParam = wheel rotation expressed in multiples of WHEEL_DELTA
   // lParam is the mouse coordinates
#define WHEEL_DELTA      120      // Default value for rolling one notch
#ifndef WM_MOUSEWHEEL
#define WM_MOUSEWHEEL (WM_MOUSELAST+1)  // message that will be supported
                                        // by the OS
#endif
/**************************************************************************
    Client Appplication (API) Defines for
	   *  determining if wheel support active
	   *  determining # of Scroll Lines
***************************************************************************/
// Class name for MSWHEEL.EXE's invisible window
// use FindWindow to get hwnd to MSWHEEL
#ifdef UNICODE
#define MOUSEZ_CLASSNAME  L"MouseZ"           // wheel window class
#define MOUSEZ_TITLE      L"Magellan MSWHEEL" // wheel window title
#else
#define MOUSEZ_CLASSNAME  "MouseZ"            // wheel window class
#define MOUSEZ_TITLE      "Magellan MSWHEEL"  // wheel window title
#endif
#define MSH_WHEELMODULE_CLASS (MOUSEZ_CLASSNAME)
#define MSH_WHEELMODULE_TITLE (MOUSEZ_TITLE)
// Apps need to call RegisterWindowMessage using the #defines
// below to get the message numbers for:
// 1) the message that can be sent to the MSWHEEL window to
//    query if wheel support is active (MSH_WHEELSUPPORT)>
// 2) the message to query for the number of scroll lines
//    (MSH_SCROLL_LINES)
//
// To send a message to MSWheel window, use FindWindow with the #defines
// for CLASS and TITLE above.  If FindWindow fails to find the MSWHEEL
// window or the return from SendMessage is false, then Wheel support
// is not currently available.
#ifdef UNICODE
#define MSH_WHEELSUPPORT L"MSH_WHEELSUPPORT_MSG" // name of msg to send
                                                 // to query for wheel support
#else
#define MSH_WHEELSUPPORT "MSH_WHEELSUPPORT_MSG"  // name of msg to send
                                                 // to query for wheel support
#endif
// MSH_WHEELSUPPORT
//    wParam - not used
//    lParam - not used
//    returns BOOL - TRUE if wheel support is active, FALSE otherwise
#ifdef UNICODE
#define MSH_SCROLL_LINES L"MSH_SCROLL_LINES_MSG"
#else
#define MSH_SCROLL_LINES "MSH_SCROLL_LINES_MSG"
#endif
// MSH_SCROLL_LINES
//    wParam - not used
//    lParam - not used
//    returns int  - number of lines to scroll on a wheel roll
#ifndef  WHEEL_PAGESCROLL
#define WHEEL_PAGESCROLL  (UINT_MAX)   // signifies to scroll a page, also
                                       // defined in winuser.h in the
                                       // NT4.0 SDK
#endif
#ifndef SPI_SETWHEELSCROLLLINES
#define SPI_SETWHEELSCROLLLINES   105  // Also defined in winuser.h in the
                                       // NT4.0 SDK, please see the NT4.0 SDK
                                       // documentation for NT4.0 implementation
                                       // specifics.
                                       // For Win95 and WinNT3.51,
                                       // Mswheel broadcasts the message
                                       // WM_SETTINGCHANGE (equivalent to
                                       // WM_WININICHANGE) when the scroll
                                       // lines has changed.  Applications
                                       // will recieve the WM_SETTINGCHANGE
                                       // message with the wParam set to
                                       // SPI_SETWHEELSCROLLLINES.  When
                                       // this message is recieved the application
                                       // should query Mswheel for the new
                                       // setting.
#endif
/*********************************************************************
* INLINE FUNCTION: HwndMsWheel
* Purpose : Get a reference to MSWheel Window, the registered messages,
*           wheel support active setting, and number of scrollLines
* Params  : PUINT puiMsh_MsgMouseWheel - address of UINT to contain returned registered wheel message
*           PUINT puiMsh_Msg3DSupport - address of UINT to contain wheel support registered message
*           PUINT puiMsh_MsgScrollLines - address of UINT to contain Scroll lines registered message
*           PBOOL pf3DSupport - address of BOOL to contain returned flag for wheel support active
*           PINT  piScrollLines - address of int to contain returned scroll lines
* Returns : HWND handle to the MsWheel window
* Note    : The return value for pf3DSupport and piScrollLines is dependant
*           on the POINT32 module.  If POINT32 module is not running then
*           the values returned for these parameters will be
*           FALSE and 3, respectively.
*********************************************************************/
__inline HWND HwndMSWheel(
      PUINT puiMsh_MsgMouseWheel,
      PUINT puiMsh_Msg3DSupport,
      PUINT puiMsh_MsgScrollLines,
      PBOOL pf3DSupport,
      PINT  piScrollLines
)
{
   HWND hdlMsWheel;
   hdlMsWheel = FindWindow(MSH_WHEELMODULE_CLASS, MSH_WHEELMODULE_TITLE);
   *puiMsh_MsgMouseWheel = RegisterWindowMessage(MSH_MOUSEWHEEL);
   *puiMsh_Msg3DSupport = RegisterWindowMessage(MSH_WHEELSUPPORT);
   *puiMsh_MsgScrollLines = RegisterWindowMessage(MSH_SCROLL_LINES);
   if (*puiMsh_Msg3DSupport)
      *pf3DSupport = (BOOL)SendMessage(hdlMsWheel, *puiMsh_Msg3DSupport, 0, 0);
   else
      *pf3DSupport = FALSE;  // default to FALSE
   if (*puiMsh_MsgScrollLines)
      *piScrollLines = (int)SendMessage(hdlMsWheel, *puiMsh_MsgScrollLines, 0, 0);
   else
      *piScrollLines = 3;  // default
   return(hdlMsWheel);
}

						