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Anonymous · #1 (**permalink**) 12-20-2004

Hi

I would like to be able to move the map to the right, left, down or up but programmatically, with, if possible, functions like SendMessage/PostMessage that would be "DllImported" into a C# project + A mappoint control (2002 version).

Thank you very much if anyone has the solution to this, its urgent

thanks

**Wilfried** · #2 (**permalink**) 12-25-2004

Hi,

Possible there are other ways, but I tryed this one:

Code:

            double Lat;
            double Lon;
            Int32 x = MP.Height / 2;
            Int32 y = MP.Width / 2;
            double Alt = MP.ActiveMap.Altitude;
            Location Loc = MP.ActiveMap.XYToLocation(x, y);
            pos.CalcPos(Loc, out Lat, out Lon);
            Lat += 1;
            MP.ActiveMap.GoToLatLong(Lat, Lon, Alt);

First the center points x, y of the map are calculated, then the current Altitude. The XYToLocation gives back the Location of the current center of the map. The CalcPos routine you will find it on this site (on another name), please try a searcht to 'reverse geocoding' to find it.

Then at last I change the Latiude and call the GoToLatLong method.

But like I say it seems a little overkill. Possible there is a simple function call to do this

**Wilfried** · #3 (**permalink**) 12-25-2004

Hi,

On this link you find how to calculate lat and long given a Location objectt:

http://www.mp2kmag.com/mappoint/disc...pic.asp?t=3291

**Wilfried** · #4 (**permalink**) 12-25-2004

Hi,

I found another method:

Code:

MP.ActiveMap.Pan(GeoPanCmd.geoNorth, Amount);

But the Amount raises another question. According to the help it say:
"PanFactor Optional Double. Amount to pan, expressed as a fraction of the screen width or height. "

But how large is that fraction ? I did a few experiment, and a vaule of 1 pan the map half the distance it fills on the screen.

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