OnMouseMove pass X Y..........don't know how

March 19th, 2011, 12:00 PM

I'm lost!

What I want to do is:

1. passing the mouse coordinates for every move (while mouse within active chart) into variables.
2. correcting the Y variable by n ticks.

I have no idea as to how that whole OnMouseMove works as my coding skills are VERY limited, and I haven't even got the slightest idea how to get the size of a tick converted into a y distance.

The background to this is that I want to create an indicator that "attaches" small horizontal lines to the crosshair at +/- n ticks from the horizontal crosshair line.

I'd be really grateful for any help.

vvhg

PS: If I try this without help, I probably end up writing the worst virus imaginable!

March 19th, 2011, 12:45 PM

Did you already read this thread ?
The code in ChartHelper.cs can give you some clues on how to do that.

As you know, the MouseEvent is already catch, when you use a the Cross Hair cursor, so be careful

.

March 19th, 2011, 01:05 PM

Thanks a lot .

Yes, I did read the thread, that's what triggered my idea in the first place. You are capturing the xy of clicks there, right?
My C# abilitiesare very limited though, so I can't modify it for mouse movement without the click.
Thanks for the warning, I will be careful, especially as I haven't got a clou what you are talking about, I just have the feeling this is waaaay out of my league.

All I know is, I basically want to do sth similar to what you posted in the thread you linked to. The difference is that I want to position the levels relative to the mouse location.

Thanks again for your help.

March 19th, 2011, 02:06 PM

Just getting the X Y is easy then, just trap the mouse move with:

Code

                            
 protected override void OnStartUp() {
...
  thisChartControl.ChartPanel.MouseMove += new MouseEventHandler(MouseEventM);
...
}

private void MouseEventM(object sender,MouseEventArgs e) {    
  Print("x: "+e.Y+" y: "+e.Y);
}

and don't forget:

Code

                            
 protected override void OnTermination() {
  this.ChartControl.ChartPanel.MouseMove -= MouseEventM;
}

March 20th, 2011, 08:30 AM

I can't thank you enough!

Nearly there now, the only problem is that I seem to get very strange values from ChartHelper:
chartHelper.CalcTickHeight() returns sth like -2147483648. And if I multiply it by 20 the result is zero. Any ideas? Or do you need the code?

vvhg

March 21st, 2011, 02:04 PM

I still can't get any values from ChartHelper that make any sense. Perhaps one of the coders that are better than me (not very hard at all!) can have a look?

Here is my disgraceful copy/paste artwork(probably good for a laugh at least)

:

Code

#region Using declarations
using System;
using System.Reflection;
using System.Windows.Forms;
using System.ComponentModel;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Xml.Serialization;
using NinjaTrader.Cbi;
using NinjaTrader.Data;
using NinjaTrader.Gui.Chart;
#endregion

// This namespace holds all indicators and is required. Do not change it.
namespace NinjaTrader.Indicator
{
            /// <summary>
    /// Enter the description of your new custom indicator here
    /// </summary>
    [Description("Enter the description of your new custom indicator here")]
    public class Crosshair : Indicator
    {
        #region Variables
        // Wizard generated variables
           private bool _found = false;
        private ChartHelper chartHelper; 
        
        private int x = 100;
        private int th = 0;
    
        private double price    = 0.0;
        private int offset1up = 20;
        private int yMouse = 0;
        private double corr1 = 0;
            
        private int yMouse2 = 100; 
        private StringFormat                stringFormat        = new StringFormat();
        private SolidBrush                    textBrush            = new SolidBrush(Color.Green);
        private SolidBrush                    textBrush2            = new SolidBrush(Color.Red);
        private Font                        textFont            = new Font("Arial", 30);
        
        // Default setting for MyInput0
        // User defined variables (add any user defined variables below)
        #endregion

        /// <summary>
        /// This method is used to configure the indicator and is called once before any bar data is loaded.
        /// </summary>
        protected override void OnStartUp() 
        {
        
          this.ChartControl.ChartPanel.MouseMove += new MouseEventHandler(MouseEventM);
        
            
        }
        
        protected override void Initialize()
        {
            Add(new Plot(Color.FromKnownColor(KnownColor.Orange), PlotStyle.Line, "Plot0"));
           
            CalculateOnBarClose = false;        //### Run on every Tick 
            Overlay                = true;    
            PaintPriceMarkers   = false;
            DisplayInDataBox    = false;
            
        }

        /// <summary>
        /// Called on each bar update event (incoming tick)
        /// </summary>
       protected override void OnBarUpdate()
        {
            if (!_found) {
               
                chartHelper = new ChartHelper ( this.ChartControl, this.Bars, this.TickSize);
               
                _found=true;
            }            
            
                
            
        }
                
        private void MouseEventM(object sender,MouseEventArgs e)
            {   
                if(th==0)
            {
                Update();
            }
              
        th=chartHelper.CalcTickHeight();
        
            //Print("tickh"+th);
                yMouse=    e.Y;
                Print("yMouse...."+yMouse);
                price=chartHelper.ConvertYtoPrice(e.Y);
                Print("price...."+price);
                ChartControl.ChartPanel.Invalidate();
                
        } 
        
        public override void Plot(Graphics graphics, Rectangle bounds, double min, double max)
        {
            
            
            
            
            yMouse2=yMouse-th*offset1up;
            int ff =th*offset1up;
            Print("th...."+th);
            Print("yMouse2...."+yMouse2);
            // Plot the line
            float textHeight = ChartControl.Font.GetHeight();
            
                
                    graphics.DrawString("__________", ChartControl.Font, textBrush, bounds.Right -x,yMouse2-textHeight , stringFormat);
                
    
        }
    
        protected override void OnTermination() 
        {
          this.ChartControl.ChartPanel.MouseMove -= MouseEventM;
        }

vvhg

March 22nd, 2011, 02:10 PM

SOLVED!!!

vvhg

March 24th, 2011, 07:16 PM

vvhg

SOLVED!!!

vvhg

What was the solution, to help others in the future.

Mike

March 25th, 2011, 02:14 AM

As stated above I could'nt get anything sensible from ChartHelper, so I calculated TickHeight (as y value) via

Code

ChartControl.GetYByValue(this,priceA);

and

Code

ChartControl.GetYByValue(this,priceB);

So I had two prices I knew and the corresponding y values. That was really all I needed.

vvhg

OnMouseMove pass X Y..........don't know how

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OnMouseMove pass X Y..........don't know how