DISPLAY.H

/************************************************************************** 
 * 
 *  THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY 
 *  KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE 
 *  IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR 
 *  PURPOSE. 
 * 
 *  Copyright 1993 - 1998 Microsoft Corporation.  All Rights Reserved. 
 *  
 **************************************************************************/ 
 
/* 
 *  display.h 
 */ 
 
 
/* MIDI status byte definitions 
 */ 
#define NOTEON          0x90 
#define NOTEOFF         0x80 
#define KEYAFTERTOUCH   0xa0 
#define CONTROLCHANGE   0xb0 
#define PROGRAMCHANGE   0xc0 
#define CHANAFTERTOUCH  0xd0 
#define PITCHBEND       0xe0 
#define SYSTEMMESSAGE   0xf0 
#define BEGINSYSEX      0xf0 
#define MTCQUARTERFRAME 0xf1 
#define SONGPOSPTR      0xf2 
#define SONGSELECT      0xf3 
 
/* Format strings used by GetDisplayText() 
 */ 
#define FORMAT3  " %08lX  %02X     %02X    %02X    %2d   %c   %-21s " 
#define FORMAT2  " %08lX  %02X     %02X    --    %2d   %c   %-21s " 
#define FORMAT3X " %08lX  %02X     %02X    %02X    --   %c   %-21s " 
#define FORMAT2X " %08lX  %02X     %02X    --    --   %c   %-21s " 
#define FORMAT1X " %08lX  %02X     --    --    --   %c   %-21s " 
 
 
/* Data structure to manage a display buffer. 
 */ 
typedef struct displayBuffer_tag 
{ 
    HANDLE  hSelf;          /* handle to this structure */ 
    HANDLE  hBuffer;        /* buffer handle */ 
    WORD    wError;         /* error flags */ 
    DWORD   dwSize;         /* buffer size (in EVENTS) */ 
    DWORD   dwCount;        /* byte count (in EVENTS) */ 
    LPEVENT lpStart;        /* ptr to start of buffer */ 
    LPEVENT lpEnd;          /* ptr to end of buffer (last byte + 1) */ 
    LPEVENT lpHead;         /* ptr to head (next location to fill) */ 
    LPEVENT lpTail;         /* ptr to tail (next location to empty) */ 
} DISPLAYBUFFER; 
typedef DISPLAYBUFFER FAR *LPDISPLAYBUFFER; 
 
 
/* Function prototypes 
 */ 
int GetDisplayText(NPSTR npText, LPEVENT lpEvent); 
void AddDisplayEvent(LPDISPLAYBUFFER lpBuf, LPEVENT lpEvent); 
void GetDisplayEvent(LPDISPLAYBUFFER lpBuf, LPEVENT lpEvent, DWORD wNum); 
LPDISPLAYBUFFER AllocDisplayBuffer(DWORD dwSize); 
void FreeDisplayBuffer(LPDISPLAYBUFFER lpBuf); 
void ResetDisplayBuffer(LPDISPLAYBUFFER lpBuf);