Support Board

#include "sierrachart.h"
#include <stdio.h>
#include <stdlib.h>

SCString ReadTextFile(SCStudyInterfaceRef sc, SCString FileLocation)
{
char TextBuffer[1000] = {}; // string size 1k, adjust as needed,
int FileHandle = 1; // File Handle cannot be just an integer numbers, has to be defined first, sc.OpenFile requires int&
unsigned int *p_BytesRead = new unsigned int(0); // sc.ReadFile() requires unsigned int pointer
sc.OpenFile(FileLocation.GetChars(), n_ACSIL::FILE_MODE_OPEN_EXISTING_FOR_SEQUENTIAL_READING, FileHandle);
sc.ReadFile(FileHandle, TextBuffer, 1000, p_BytesRead);
sc.CloseFile(FileHandle);
return TextBuffer;
}

SCDLLName("ReadLineFromFile")
SCSFExport scsf_ReadLineFromFile(SCStudyGraphRef sc)
{

  SCSubgraphRef Line1         = sc.Subgraph[0];
  SCInputRef PathAndFile      = sc.Input[0];
  
if(sc.SetDefaults)
{
sc.GraphName="Read Line Value From File";
sc.StudyDescription="Read Line Value From File";
sc.DrawZeros = 0;
sc.AutoLoop = true;
sc.GraphRegion = 0;
    sc.ValueFormat = 4;
    sc.MaintainAdditionalChartDataArrays = 1;    
    sc.CalculationPrecedence = LOW_PREC_LEVEL;    
    
    Line1.Name = "Line 1";
    Line1.DrawStyle = DRAWSTYLE_LINE;
    Line1.PrimaryColor = COLOR_CYAN;
    Line1.DrawZeros = false;
  
   PathAndFile.Name = "Path and Filename";
    PathAndFile.SetPathAndFileName("");

return;
}

    SCString PathAndFileName = PathAndFile.GetPathAndFileName();
    
    static SCString MyInputString("");
    // has to be static, otherwise the content will be cleared on very next loop

    MyInputString.Format(ReadTextFile(sc, PathAndFileName).GetSubString(ReadTextFile(sc, PathAndFileName).GetLength()-1, 0));
    
    // read the string and convert to float
    Line1[sc.Index] = strtof(MyInputString,NULL);
}