private void button1_Click(object sender, EventArgs e)
{
POIPoints pnt = new POIPoints();
pnt.name = txtPOIName.Text;
pnt.lat = Convert.ToDouble(txtPOILatitude.Text);
pnt.lon = Convert.ToDouble(txtPOILongitude.Text);
pnt.elev = Convert.ToDouble(txtPOIElevation.Text);
pnt.alt = Convert.ToDouble(txtPOIAltitude.Text);
pnt.cam_alt = Convert.ToDouble(txtPOICameraAlt.Text);
pnt.visible = true;
pnt.selected = true;
_wpg.ReplacePOI(_poi_index, pnt);
GMAPTree.Update_GMapTree(_wpg, _treeview);
_gmap.ReDrawgMap();
this.Close();
}
