public void OnImageChanged(uint viewerId)
{
Viewer viewer = _viewerList.Get(viewerId);
if ((viewer != null) && (_api != null))
{
string imageId = _api.GetImageID(viewerId);
viewer.ImageId = imageId;
if (viewer.HasMarker)
{
viewer.HasMarker = false;
List <Viewer> markerViewers = _viewerList.MarkerViewers;
if (markerViewers.Count == 0 && _crossCheck != null)
{
_crossCheck.Dispose();
_crossCheck = null;
}
}
}
}
