/****************************************************************************
*
* mciqa.h
*
* Copyright (c) 1991-1992 Microsoft Corporation. All Rights Reserved.
*
*
* Sample MCI Device Driver
*
* Driver include file
*
***************************************************************************/
extern HANDLE hModuleInstance;
/* up to four open devices are supported by this driver */
#define MCIQA_MAX_CHANNELS 4
/* used for debug output */
#define MCINAME "MCIQA:"
/* successful MCI return code */
#define MCIERR_NO_ERROR 0
/* marks invalid channel number */
#define MCIQA_NO_CHANNEL (-1)
/* return string for product ID */
#define MCIQA_PRODUCT "MCI Sample Driver"
/* processes all MCI specific messages */
extern DWORD FAR PASCAL mqMCIProc (WORD wDeviceID, WORD wMessage,
DWORD dwParam1, DWORD dwParam2);
/* initialize a channel */
extern BOOL mqInitialize (void);
/****************************************************************************
memory management macros
***************************************************************************/
HANDLE __H;
#define MAKEP(sel,off) ((LPVOID)MAKELONG(off,sel))
#define GHandle(sel) (LOWORD(GlobalHandle(sel)))
#define GSelector(h) (HIWORD((DWORD)GlobalLock(h)))
#define GAllocSelF(f,ulBytes) ((__H=GlobalAlloc(f,(LONG)(ulBytes))) ? GSelector(__H) : NULL )
#define GAllocPtrF(f,ulBytes) MAKEP(GAllocSelF(f,ulBytes),0)
#define GAllocPtr(ulBytes) GAllocPtrF(GMEM_MOVEABLE,ulBytes)
#define GFreeSel(sel) (GlobalUnlock(GHandle(sel)),GlobalFree(GHandle(sel)))
#define GFreePtr(lp) GFreeSel(HIWORD((DWORD)(lp)))
/****************************************************************************
Debug support
***************************************************************************/
#ifdef DEBUG
extern void NEAR dprintf(PSTR szFormat, ...);
extern void NEAR dout(PSTR szOutput);
#else
#define dprintf if (0) ((int (*)(char *, ...)) 0)
#define dout(string)
#endif
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