void but_Click(object sender, EventArgs e)
{
if (Host.FPDrawnPolygon != null && Host.FPDrawnPolygon.Points.Count > 2)
{
Form gridui = new GridUI(this);
MissionPlanner.Utilities.ThemeManager.ApplyThemeTo(gridui);
gridui.ShowDialog();
}
else
{
CustomMessageBox.Show("Please define a polygon.", "Error");
}
}