Leaked source code of windows server 2003
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/*++ BUILD Version: 0001
*
* WOW v1.0
*
* Copyright (c) 1991, Microsoft Corporation
*
* ISVWOW.H
* WOW32 ISV Support. Public Functions and Macros for Multi-Media extensions
* to the WOW thunking mechanism.
*
* History:
* Created 18-Feb-1992 by Stephen Estrop (StephenE)
--*/
/*
** Public functions that allow for extensions to the WOW thunking
** system. These two functions enable extension thunk dlls such as
** Multi-Media video recording to callback into 16 bit code to simulate
** a hardware interrupt callback and to use the same handle mapping that
** WOW uses.
*/
LPVOID
WOW32ResolveMemory(
VPVOID vp
);
BOOL APIENTRY
WOW32DriverCallback(
DWORD dwCallback,
DWORD dwFlags,
WORD wID,
WORD wMsg,
DWORD dwUser,
DWORD dw1,
DWORD dw2
);
BOOL APIENTRY
WOW32ResolveHandle(
UINT uHandleType,
UINT uMappingDirection,
WORD wHandle16_In,
LPWORD lpwHandle16_Out,
DWORD dwHandle32_In,
LPDWORD lpdwHandle32_Out
);
/*
** Constants for use with WOW32ResolveHandle
*/
#define WOW32_DIR_16IN_32OUT 0x0001
#define WOW32_DIR_32IN_16OUT 0x0002
#define WOW32_USER_HANDLE 0x0001 // Generic user handle
#define WOW32_GDI_HANDLE 0x0002 // Generic gdi handle
// Kernel handles are not mapped
#define WOW32_WAVEIN_HANDLE 0x0003
#define WOW32_WAVEOUT_HANDLE 0x0004
#define WOW32_MIDIOUT_HANDLE 0x0005
#define WOW32_MIDIIN_HANDLE 0x0006
/*
** These MultiMedia messages expect dwParam1 to be a generic pointer and
** dwParam2 to be a generic DWORD. auxOutMessage, waveInMessage,
** waveOutMessage, midiInMessage and midiOutMessage all respect this
** convention and are thunked accordingly on WOW.
*/
#define DRV_BUFFER_LOW (DRV_USER - 0x1000) // 0x3000
#define DRV_BUFFER_USER (DRV_USER - 0x0800) // 0x3800
#define DRV_BUFFER_HIGH (DRV_USER - 0x0001) // 0x3FFF
/*
** The flags are extensions to those normally used with GetWindowFlags,
** they allow 16 bit applications to detect if they are running on NT
** and if the Intel cpu is being emulated.
*/
#define WF1_WINNT 0x40 // You are running on NT WOW
#define WF1_CPUEM 0x01 // NT WOW on MIPS or Alpha