Indicator to draw lines relative to mouse selection of two bar points

[suraj]

Hi
I would like to make an indicator where one can select two bars on a chart. Then draw a line whose length and position are based on the time and price of the two bar points.

e.g. on chart select bar A low and bar B high - we have available time (or bar number) and Price for Bar A and Bar B. Then draw a line which is mid point between Bar A and Bar B in Time and Price to Bar B time and price.

How to access the mouse click data for price and time for the selected points and how to reference the bar time and open or close price to be able to calculate line start and end points and then plot the line?

thanks
Suraj

[intelligenttrader]

Hi Suraj,

Here is a snippet I use in my indicators to draw extended lines on preselected bars. It uses a mouse down event to get the data for 2 picks of the mouse. Then a button click event to do the drawing of the extended lines. You can get OHLC values from the bar1 and bar2 or any manipulation such as midpoint using math . Hope this helps. The rest you should be able to figure out.

private void AIMouseDownEvent(object sender, MouseButtonEventArgs e)
{
TriggerCustomEvent(o =>
{
if (ChartControl != null)
{
if (e.ChangedButton.ToString().ToLower().Contains("left"))
{
if (mouse1picked == false)
{
mousepoint1 = ChartControl.MouseDownPoint.X.ConvertToHorizontalP ixels(ChartControl.PresentationSource);
int barnum1 = ChartBars.GetBarIdxByX(ChartControl, mousepoint1);
DateTime hightime = ChartBars.GetTimeByBarIdx(ChartControl, barnum1);
datepickedhigh = RoundUpToNearest(hightime, TimeSpan.FromMinutes(1));
mouse1picked = true;
pickedhighprice = BarsArray[0].GetHigh(barnum1);

}
else
{
mousepoint2 = ChartControl.MouseDownPoint.X.ConvertToHorizontalP ixels(ChartControl.PresentationSource);
int barnum2 = ChartBars.GetBarIdxByX(ChartControl, mousepoint2);
DateTime lowtime = ChartBars.GetTimeByBarIdx(ChartControl, barnum2);
datepickedlow = RoundUpToNearest(lowtime, TimeSpan.FromMinutes(1));
mouse1picked = false;
pickedlowprice = BarsArray[0].GetLow(barnum2);
}
}
}
}, null);
}

Tom

[suraj]

Hi Tom,

thanks for the info - I will work through this, it will give me a good start in understanding how to make the indicator.
Do you have a web link to your AI indicator site?

Thanks,
Suraj

[intelligenttrader]

Hi Suraj,

You are welcome. I am not sure of the rules of posting external links. But if you click on my vendor signature it will take you to our site.

Tom

[suraj]

Thanks Tom, got it.