Hi
I'm trying to display the coordinates ( lat,long) of the mouse.
On the mouse move event I add:
Location loc = map.XYToLocation(e.x,e.y);

loc suppose to have the geogaphic location .
now I'd like to use it but I dont know how to get it out of 'loc'?

Hi,

Put this event handler in OnMouseMove:

Code:

        private void MP_MouseMoveEvent(object sender, AxMapPoint._IMappointCtrlEvents_MouseMoveEvent e)
        {
            AxMapPoint.AxMappointControl mp = (AxMapPoint.AxMappointControl)sender;
            Location loc = mp.ActiveMap.XYToLocation(e.x, e.y);
            if (loc != null) {
                double lat;
                double lon;
                MPTools.calcPos(mp.ActiveMap, loc, out lat, out lon);
                statusStripLat.Text = lat.ToString("F5");
                statusStripLon.Text = lon.ToString("F5");
            }
        }

Then for the calcPos you can make a static class:

Code:

    public static class MPTools
    {
        private static Map map;
        private static Location locNorthPole;
        private static Location locSantaCruz;
        private static double halfEarth;
        private static double quarterEarth;

        /// <summary>
        /// Compute latitude and longitude given a location object
        /// Original Author: Gilles Kohl [ gilles@compuserve.com ]
        /// This code is copyrighted freeware - use freely, but please leave this
        /// header intact. Suggestions and comments welcome.
        /// </summary>
        public static void calcPos(Map activeMap, Location loc, out double lat, out double lon)
        {
            if (map != activeMap) { // First time, or another map loaded.
                map = activeMap;
                locNorthPole = map.GetLocation(90, 0, 0);
                locSantaCruz = map.GetLocation(0, -90, 0);
                halfEarth = map.Distance(locNorthPole, map.GetLocation(-90, 0, 0));
                quarterEarth = halfEarth / 2;
            }
            lat = 90 - 180 * map.Distance(locNorthPole, loc) / halfEarth;
            double D = map.Distance(map.GetLocation(lat, 0, 0), loc);
            double L = Deg2Rad(lat);
            lon = 180 * Math.Acos((Math.Cos(D * Math.PI / halfEarth) - Math.Pow(Math.Sin(L), 2)) / Math.Pow(Math.Cos(L), 2)) / Math.PI;
            if (map.Distance(locSantaCruz, loc) < quarterEarth)
                lon = -lon;
        }

p.s : After I wrote this post , I have noticed that many users asked it before , and read their answers . but thanks again .

Regards,
Moti