How to convert mouse point to chart point

[wbennettjr]

What is the procedure for converting the mouse location to a proper chart location? I want to be able to tell when the mouse is over a drawing object in the chart.

I have tried the following:

ChartControl.MouseMove += ChartMouseMove;

private void ChartMouseMove(object s, MouseEventArgs e)
{
    var pos = e.GetPosition(ChartControl);
    // or var pos = e.GetPosition(ChartControl.OwnerChart);
}

The resulting point is not corresponding with drawing objects on the chart.

Thanks.

[NinjaTrader_ChelseaB]

Hello wbennettjr,

You can convert a price to a y value and time/barSlot to x and vice versa.

Below is a link to an example.

http://ninjatrader.com/support/forum/showthread.php?p=499684#post499684

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

http://ninjatrader.com/support/helpGuides/nt8/en-us/converttoverticalpixels2.htm

[wbennettjr]

Thanks Chelsea,

Based on the links you provided, I changed the code to

ChartControl.MouseMove += ChartMouseMove;

private void ChartMouseMove(object s, MouseEventArgs e)
{
    var pos = e.GetPosition(ChartControl);
    pos.X = ChartingExtensions.ConvertToHorizontalPixels(pos.X, 
ChartControl.PresentationSource);
    pos.Y = ChartingExtensions.ConvertToVerticalPixels(pos.Y, ChartControl.PresentationSource);
}

Works like a charm!