Horizontal line would work in Main Chart window

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Hi,


I have the following code written in expert adviser, not sure why the line would not draw?


Appreciate if anyone can help



The external value Renko would be manually input, as well as the Reversal_colour during startup.


extern double Renko;
extern color Reversal_colour=Blue;

int start()
{
double Reversal_line_val;
if (Reversal_colour==Blue)
Reversal_line_val=Renko+(250/10000);
if (Reversal_colour==Red)
Reversal_line_val=Renko-(250/10000);



Alert("Reveral_line_val = ",Reversal_line_val);
ObjectCreate("Reversal_line",OBJ_HLINE,0,0,Reversal_line_val);
ObjectSet("Reversal_line",OBJPROP_COLOR,Reversal_colour);
Comment("Reversal =",Reversal_line_val);
MessageBox("Reversal =",Reversal_line_val);
Print("Reversal =",Reversal_line_val);
//WindowRedraw();
return (0);

 
  2. If the object already exists it will never be moved. I use this pattern:
    static string   TKcLow  = "Tokyo Channel Low"; #define WINDOW_MAIN 0
if(!ObjectMove(TKcLow, 0, TimeWellington, TKcPrcLow))
    if (!ObjectCreate( TKcLow, OBJ_HLINE, WINDOW_MAIN
                     , TimeWellington, TKcPrcLow))  Alert(
        "ObjectCreate(", TKcLow,",HLINE) [2] failed: ",GetLastError() );
    else if (!ObjectSet( TKcLow, OBJPROP_COLOR, Color.TKc ))    Alert(
        "ObjectSet(", TKcLow, ",Color) [3] failed: ", GetLastError() );

  3. Reversal_line_val=Renko+(250/10000);
    Don't hard code constants
    Reversal_line_val=Renko+ 250*Point;

 
WHRoeder:
  2. If the object already exists it will never be moved. I use this pattern:
  3. Don't hard code constants

Hi,

Thanks

I have amended my programme, the only thing that I find is how to add a line to check for the existence of the horizontal line object during redraw, if the horizontal line is in existence, it must be destroy before re-create again to ensure the new horizontal line object could be display property in the chart .

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