Real-Time Chart of Non-Real time Data

[User (Legacy)]

I want to show a chart of data that represents the complete time history 

of a simulation and then move a line along that plot to show the current 

time. 

The indicator line needs to be updated at least 5Hz. My problem is when I 

call my update routine the whole simulation grinds to a halt. I assume that 

I'm 

doing something wrong. Here is the code I'm using to update the constant 

line: 

   IChartFXPtr pChartFX = pchtaCharts[iChartIndex]; 

   pChartFX->OpenDataEx(COD_CONSTANTS, COD_UNCHANGE, COD_UNCHANGE); 

    pChartFX->ConstantLine->Item[0]->Value = iWindowPosition; 

   pChartFX->CloseData((CfxCod) (COD_CONSTANTS|COD_SMOOTH)); 

Is there something that I can do to speed up the update of the constant line 

or should I try a different way 

of highlighting the current time on the chart? 

Thanks for the help. 

-- 

Steve Rasmussen