/// <summary>
/// Clears all the polygons
/// </summary>
private void OnClearAll(object sender, CommandEventArgs e)
{
if (MessageBox.Show(ControlsRes.NoPolygonContextMenu_DeleteAllConfirm, ControlsRes.NoPolygonContextMenu_Clusters, MessageBoxButtons.OKCancel, MessageBoxIcon.Warning) == DialogResult.OK)
{
_polygonDrawer.Clear();
}
}
