public override void Visit()
{
base.Visit();
int cnt = _children.Count;
for (int i = 0; i < cnt; i++)
{
DisplayObject child = _children[i];
if (child.visible)
{
child.Visit();
}
}
if (gOwner != null && (gOwner is GComponent))
{
((GComponent)gOwner).OnUpdate();
}
}