public AreaSelection()
{
_screenProps = new ScreenProperties();
_boundaryDetection = new SmartBoundaryDetection(_screenProps);
}
/// <summary>
/// constructor
/// As the capture will put two forms on the UI, SmartBoundaryDetection has
/// to take a snapshot of the UI elements before the two forms show up
/// </summary>
public SmartBoundaryDetection(ScreenProperties screenProps)
{
_screenProps = screenProps;
GetTopLevelWindows();
}