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SCSFExport scsf_ModifiableTimer(SCStudyInterfaceRef sc)
{
SCInputRef IntervalSeconds = sc.Input[0];

if (sc.SetDefaults)
{
sc.GraphName = "Custom Timer Function";
sc.AutoLoop = 0;
sc.UpdateAlways = 1;

IntervalSeconds.Name = "Interval)";
IntervalSeconds.SetInt(10); // interval (10 seconds)
IntervalSeconds.SetIntLimits(1, 3600); // max interval

return;
}

static SCDateTime LastExecutionTime;
SCDateTime CurrentTime = sc.CurrentSystemDateTime;
int Interval = IntervalSeconds.GetInt();

if (CurrentTime.GetTimeInSeconds() - LastExecutionTime.GetTimeInSeconds() >= Interval)
{
ExecuteTimedFunction();
LastExecutionTime = CurrentTime; // Reset
}
}

SCSFExport scsf_ModifiableTimer(SCStudyInterfaceRef sc)
{
//modifiable interval (milliseconds)
SCInputRef IntervalMilliseconds = sc.Input[0];

if (sc.SetDefaults)
{
sc.GraphName = "Modifiable Timer Function";
sc.AutoLoop = 0;
sc.UpdateAlways = 1;

IntervalMilliseconds.Name = "Interval Milliseconds";
IntervalMilliseconds.SetInt(250); // interval 250ms
IntervalMilliseconds.SetIntLimits(1, 60000); // max ms

return;
}

// store last execution time
static SCDateTimeMS LastExecutionTime;
SCDateTimeMS CurrentTime = sc.CurrentSystemDateTimeMS;
int Interval = IntervalMilliseconds.GetInt(); // get interval in ms

// execute on specified interval
if ((CurrentTime - LastExecutionTime).GetMilliSeconds() >= Interval)
{
ExecuteTimedFunction(); // replace with your actual function
LastExecutionTime = CurrentTime; // reset
}
}

#include <sierrachart.h>

#define timer_interval_ms 5000

void OnInit (SCStudyGraphRef sc)
{
  sc.AddMessageToLog("OnInit", 1);
}

void OnDeinit (SCStudyInterfaceRef sc)
{
  sc.AddMessageToLog("OnDeinit", 1);
}

void OnTimer (SCStudyInterfaceRef sc)
{
  sc.AddMessageToLog("OnTimer", 1);
  // add logic to get position data every 5 seconds here
}

void OnTick (SCStudyInterfaceRef sc)
{
  sc.AddMessageToLog("OnTick", 1);
}

SCDLLName("concepts")
SCSFExport scsf_concepts (SCStudyInterfaceRef sc)
{
  if (sc.SetDefaults)
  {
    sc.GraphName = "concepts";
    sc.GraphRegion = 0;
    sc.UpdateAlways = 1;
    return;
  }

  // OnInit
  int& initialized = sc.GetPersistentIntFast(0);
  if (!initialized)
  {
    OnInit(sc);
    initialized = 1;
  }

  // OnDeinit
  if (sc.LastCallToFunction)
    OnDeinit(sc);

  // OnTimer
  SCDateTimeMS& last_datetime = sc.GetPersistentSCDateTimeFast(0);
  SCDateTimeMS now = sc.CurrentSystemDateTimeMS;
  if (now >= last_datetime + SCDateTime::MILLISECONDS(timer_interval_ms))
  {
    OnTimer(sc);
    last_datetime = now;
  }

  // OnTick
  OnTick(sc);
}