// midiout.h 
#define IDM_PLAY 1 // menu item ID numbers
#define IDM_STOP 2
#define IDM_QUIT 3
#define APPNAME "midiout"
typedef struct tagMIDIDATA // structure to hold
MIDI short data
{
DWORD dwTimeMs ; // time of event, ms from start
DWORD dwMidiData ; // midi short message
} MIDIDATA ;
typedef MIDIDATA FAR * LPMIDIDATA ;
// short demo song data
MIDIDATA MidiData [6] = {0, 0x403c90, // middle C on
200, 0x003c90, // middle C off
400, 0x404c90, // G on
600, 0x004c90, // G off
800, 0x404090, // E on
1000, 0x004090 } ; // E off
typedef struct tagMIDISONG // structure to hold a bunch of MIDI data
{
HMIDIOUT hMidiOut ; // midi output port handle
DWORD dwEvents ; // number of events
DWORD dwLastEvent ; // ID number of last event played
DWORD dwTime ; // current ms time for playback
MIDIDATA far *lpMidiData ; // pointer to array of MIDIDATA
} MIDISONG ;
typedef MIDISONG FAR * LPMIDISONG ;
// function prototypes 
LRESULT FAR PASCAL WndProc (HWND, UINT, WPARAM, LPARAM);