// ====================================
// === Indexnummern sind dieselben wie in den Arrays
bool ShowIndexLine(int ArrNumber=-1)
{
   bSymVis[ArrNumber]=true;
   SetIndexStyle(ArrNumber,DRAW_LINE,STYLEDIS,WIDTHDIS, cSymCol[ArrNumber]);
   return(true);
}

void OnChartEvent(const int id, const long &lparam,
                  const double &dparam, const string &sparam )
{
   // ==============================  letter
   if(id==CHARTEVENT_KEYDOWN)
   {
      // ==> funktioniert
      if(lparam==StringGetCharacter(LETTERSHOW,0)) { DoHiding=-1; } //NoHiding
      if(lparam==StringGetCharacter(LETTERHIDE,0)) { DoHiding= 1; } //DoHide
      Print(__FUNCTION__," letter ",lparam," was pressed. DoHiding=",(int)DoHiding);
   }
   // ==============================  buttons
   if(id==CHARTEVENT_OBJECT_CLICK)
   {
      // ==> funktioniert NICHT
      for(int n=0; n<iNoOfSym; n++)                                  //iNoOfSym=13
      {
         if( sparam==sNamButt[n] )
         {
            Print(__FUNCTION__," Button ",sparam," was pressed");    //<== kein Print
            if(DoHiding==-1)                                         //NoHiding
            {
               if(ShowIndexLine(n))
               {
                  ObjectSetInteger(0,sparam,OBJPROP_STATE,false);
                  Print(__FUNCTION__," Sym vis=",(bool)bSymVis[n]); //SetIn ShowIndexLine
                  break;
               }
            }//NoHiding
            else if(DoHiding== 1)                                    //HideIndex
            {
               if(HideIndexLine(n))
               {
                  ObjectSetInteger(0,sparam,OBJPROP_STATE,true);
                  Print(__FUNCTION__," Sym vis=",(bool)bSymVis[n]); //SetIn HideIndexLine
                  break;
               }
            }//HideIndex
         }//AnIndexButton
      }
      
      // ==> funktioniert
      if(sparam==ButtonName)                                         // Save button
      {
         Print(__FUNCTION__," Button ",sparam," was pressed");
         if( SaveConfigToFile() )
         { 
              ChangeButton(0);                                       //->ToUnpressed
              ReInit();
         }
         else ChangeButton(1);                                       //SomeError->ToPressed
      }
      // ======================================================================
      // ==> funktioniert NICHT
      else if( sparam==PFX+"but.dax" )
      {
         Print(__FUNCTION__," Button ",sparam," was pressed");       //<== kein Print
         if(DoHiding==-1)                                            //NoHiding
         {
            if(ShowIndexLine(0))
            {
               ChangeIndexButton(sparam,0);                          //Unpressed
               Print(__FUNCTION__," Sym vis=",(bool)bSymVis[0]);     //SetIn ShowIndexLine
            }
         }//NoHiding
         else if(DoHiding== 1)                                       //HideIndex
         {
            if(HideIndexLine(0))
            {
               ChangeIndexButton(sparam,1);                          //Pressed
               Print(__FUNCTION__," Sym vis=",(bool)bSymVis[0]);     //SetIn HideIndexLine
            }
         }//HideIndex
      }//AnIndexButton
}