Converting screen coordinates into axis values

[SupportArchives]

I'm using ViewXY cartesian chart. I'd like to get the X and Y axis values under the mouse, not the screen coordinates. How ?

[ArctionPasi]

If you define MouseMove, MouseDown or MouseUp events, you can use the screen coordinates to xAxis.CoordToValue() and yAxis.CoordToValue. They will give you the click value as X and Y axis values.

For example, MouseDown:

Code: Select all

void m_chart_MouseDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
            Point pnScreen = e.GetPosition(m_chart);
            double x, y;
            m_chart.ViewXY.XAxes[0].CoordToValue((int)pnScreen.X, out x, false); 
            m_chart.ViewXY.YAxes[0].CoordToValue((int)pnScreen.Y, out y); 

            //x and y have the axis values now
 }