private void AddNode(TreeNodeCollection parentNodeCollection, string classname, uint clid)
{
bool isAbstract = m_mdc.GetAbstract(clid);
string label = classname + ": (" + clid.ToString() + ")" + (isAbstract ? " abstract class" : "");
TreeNode node = new TreeNode(label);
node.Tag = clid;
parentNodeCollection.Add(node);
AddSubNodes(node.Nodes, clid);
}