protected static void vinv_dbug_EnterLayerReCalculateContent(RenderElementLayer layer)
{
var debugVisualLay = dbugGetLayoutTracer();
if (debugVisualLay == null) return;
debugVisualLay.PushLayerElement(layer);
debugVisualLay.WriteInfo("..>L_RECAL_TOPDOWN :" + layer.ToString());
}
protected static void vinv_dbug_ExitLayerReCalculateContent()