/// <summary>a region has been selected or modified</summary>
/// <param name="sender">the list control</param>
/// <param name="e">the list item</param>
private void ctlRegions_SelectionChanged(object sender, RegionInfoList.RegionInfoListEventArgs e)
{
selectedRegionInfo = e.Item.RegionInfo;
ReDrawImages(true);
}
private void ctlRegions_Delete(object sender, RegionInfoList.RegionInfoListEventArgs e)
{
drawnRegions.Remove(e.Item.RegionInfo);
ReDrawImages(true);
}