Object overlapping color problem - page 3

[Muhammad Fahad]

This is a legit problem.

[Rob Perrett]

It took me a bit to track down the answer to this, but its now working very easily so I'm updating a couple of these threads.

The library you need is iCanvas by @Nikolay7ko.

https://www.mql5.com/en/forum/296241/page2#comment_51358580

Example use to fix the infamous rectangle issue:

Canvas.Erase(W.Color);
datetime startTime, endTime;
double PriceTop, PriceBottom;
uint rectColor = 0xFF72fc72;  // Color must be uint 4 channel hex with alpha
// insert logic code here....
Canvas.FillRectangle((int)(Canvas.X(startTime)),(int)(Canvas.Y(PriceBottom)),(int)(Canvas.X(endTime)),(int)(Canvas.Y(PriceTop)),rectColor);
Canvas.Update();

[Leonardo Al Santiago Montilla]

Rob Perrett #:

It took me a bit to track down the answer to this, but its now working very easily so I'm updating a couple of these threads.

The library you need is iCanvas by @Nikolay7ko.

https://www.mql5.com/en/forum/296241/page2#comment_51358580

Example use to fix the infamous rectangle issue:

Hello Rob!

I was able to create some rectangles in my zones, but as I move the chart, the rectangles stay static... is there a way to move the rectangles as we move the chart?

Regards,

[Lorentzos Roussos]

Leonardo Al Santiago Montilla #:

Hello Rob!

I was able to create some rectangles in my zones, but as I move the chart, the rectangles stay static... is there a way to move the rectangles as we move the chart?

Regards,

are you updating the display as the chart moves ? 

[Leonardo Al Santiago Montilla]

Lorentzos Roussos #:

are you updating the display as the chart moves ? 

How do I do that?

I cant find in on any example.

Thanks!

[Lorentzos Roussos]

Leonardo Al Santiago Montilla #:

How do I do that?

I cant find in on any example.

Thanks!

void OnChartEvent(const int id,const long& lparam,const double& dparam,const string& sparam)
  {
  if(id==CHARTEVENT_CHART_CHANGE){
    //call the drawing function here
    }
  }

[Leonardo Al Santiago Montilla]

Lorentzos Roussos #:

Still have not managed, I want a "rectangle" to be attached to a "time,price" when I move the chart. Is there any example?
Also how can I draw several rectangles, when I add a new one, basically the "old one" gets updated to the new coordinates.

Thanks!