Incorrect value of the width of the chart

[alexr]

We have a client machine with two graphics cards AMD HD 6570.

    public class TestGraphics : Indicator
    {
        private DateTime lastTimeMouseRefresh = DateTime.MinValue;
        protected override void OnStateChange()
        {
            if (State == State.SetDefaults)
            {
                Description = "TestGraphics";
                Name = "TestGraphics";
                Calculate = Calculate.OnEachTick;
                IsChartOnly = true;
                IsOverlay = true;
                DisplayInDataBox = true;
            }
            else if (State == State.Historical)
            {
                ChartControl.PreviewMouseMove += mouse_move;
            }
            else if (State == State.Terminated)
            {
                ChartControl.PreviewMouseMove -= mouse_move;
            }
        }

        protected override void OnBarUpdate()
        {
        }

        protected override void OnRender(ChartControl chartControl, ChartScale chartScale)
        {
            DebugMessages("chartScale.Width " + chartScale.Width);
            DebugMessages("ChartPanel.W " + ChartPanel.W);
            DebugMessages("chartControl.CanvasRight " + chartControl.CanvasRight);
            DebugMessages("chartControl.PanelWidth " + chartControl.PanelWidth);
            DebugMessages("---");
            DebugMessages("chartScale.Height " + chartScale.Height);
            DebugMessages("ChartPanel.H " + ChartPanel.H);
            DebugMessages("chartControl.ActualHeight " + chartControl.ActualHeight);
            DebugMessages("------------------------");
        }

        private void DebugMessages(string myMessage)
        {
            Log(myMessage, NinjaTrader.Cbi.LogLevel.Information);
        }

        private void mouse_move(object sender, MouseEventArgs e)
        {
            if (DateTime.Now >= this.lastTimeMouseRefresh)
            {
                this.lastTimeMouseRefresh = DateTime.Now.AddMilliseconds(100.0);
                var position = e.GetPosition(ChartPanel as IInputElement);

                DebugMessages("-position  " + position.X + "  " + position.Y);
            }
        }

    }

in the Log

2016-11-04 22:58:40:709|1|16|chartScale.Width 1022.4
2016-11-04 22:58:40:709|1|16|ChartPanel.W 1278
2016-11-04 22:58:40:709|1|16|chartControl.CanvasRight 1278
2016-11-04 22:58:40:709|1|16|chartControl.PanelWidth 1022.4
2016-11-04 22:58:40:709|1|16|hhh
2016-11-04 22:58:40:709|1|16|chartScale.Height 700.8
2016-11-04 22:58:40:709|1|16|ChartPanel.H 876
2016-11-04 22:58:40:709|1|16|chartControl.ActualHeight 728

Is there any solution without replacing the hardware?

upd. Quad Core i7, .NET 4.6, Windows 10 Home. NT8 RC2

[NinjaTrader_PatrickH]

Hello alexr,

Thank you for your post.

Have the user check their Display settings under Control Panel > Display > "Set a custom scaling level" > see if it is not set to 100%.

[alexr]

I checked it. 100%

upd. But I found was 125% elsewhere. Tomorrow, after restart the computer will seen.

[NinjaTrader_PatrickH]

Hello alexr,

Thank you for your response.

Can you have the user send us their log and trace files? Please have them reference this thread in their note. They can send their files by going to Help > Email Support.

[NinjaTrader_Matthew]

DPI is definitely the cause of the discrepancy between chart panel (device pixels) and the chart scale (application pixels)

http://ninjatrader.com/support/helpGuides/nt8/en-us/width.htm

We have some charting extension you can use on these property values to help convert the values to be compatible with all devices

http://ninjatrader.com/support/helpGuides/nt8/en-us/working-with-pixel-coordinates.htm

http://ninjatrader.com/support/helpGuides/nt8/en-us/chartingextensions.htm

[alexr]

I checked it. 100%

upd. But I found was 125% elsewhere. Tomorrow, after restart the computer will seen.

It seems to work correctly when the scaling set 100%. But still I have to rewrite code to avoid such problems in the future.

2 Patrick, I looked at the log and trace files, nothing interesting.