internal void PrepareFrame(Window topWindow, Frame frame)
{
frame.ResolveParentStrings();
frame.ResolveAnchors();
frame.Ui = this;
foreach (Region.Anchor anchor in frame.Anchors)
RegisterAnchor(anchor);
frame.Prepare(window);
frame.SetupWindowPosition();
frame.SetupEventScripts();
frame.OnLoad(new EventArgs());
frame.UpdateVisibility();
}