void InsertEvent (char * channel, char * reserve, int selected, int * eventcount, int * wavelength, int * seconds, int * samplecount, HWND EDC_Wav, HWND EDC_Sec)
{
	// will shift eventcount, wavelength, seconds, samplecount
 
	int i ;
	int changepoint, reservepos, new_endpos, shiftlength ;
 
	//mark point of change in samples (INCLUDE old wave)
 
	if (selected != 0) changepoint = samplecount [selected - 1] ;
	else changepoint = 0 ;
 
	//copy data & clear channel
 
	reservepos = 0 ;
 
	for (i = changepoint ; i < samplecount [*LASTEVENT] ; i++)
	{
		reserve [reservepos++] = channel [i] ;
		channel [i] = 0 ;
	}
 
	//shift everything up
 
	for (i = *eventcount ; i > selected ; i--)
	{
			wavelength [i] = wavelength [i-1] ;
			seconds [i] = seconds [i-1] ;
			samplecount [i] = samplecount [i-1] ;
	}
 
	(*eventcount)++ ;
 
	//get new wavelength & seconds, replace in old eventcount
 
	ReadEdits (EDC_Wav, EDC_Sec, wavelength, seconds, selected) ; 
 
	//produce new wave at cleared location
 
	new_endpos = // get end position of new wave
		SineWave (channel, wavelength [selected], seconds [selected], changepoint) ;
 
 
	samplecount [selected] = new_endpos ;
 
	//insert rest of channel after, clear reserve
 
	for (i = 0 ; i < reservepos ; i++)
	{
		channel [new_endpos++] = reserve [i] ;
		reserve [i] = 0 ;
	}
 
	//shift samplemarkers
 
	shiftlength = new_endpos - samplecount [selected + 1] ;
 
	for (i = selected + 1 ; i < *eventcount ; i++)
		samplecount [i] += shiftlength ;
 
	return ;
}

struct event {
  int *wavelength;
  int *seconds;
  int *samplecount;
};
 
struct channel {
  char *channel;
  int selected;
  int eventcount;
  event *events;
};

void InsertEvent(struct channel *channel, HWND EDC_Wav, HWND EDC_Sec);

void InsertEvent(struct channel *channel, struct EDC_Data *data);