result = MoveLayerInFrontOf( layertomove, targetlayer )
      
    LONG MoveLayerInFrontOf( 
struct Layer *, 
struct Layer *);
    
 
  
    Move this layer in front of target layer, swapping bits in and out of the display with other layers. If this is a refresh layer then collect damage list and set the LAYERREFRESH bit in layer->Flags if redraw required.
    
      - Note: 
- 
        This operation may generate refresh events in other layers associated with this layer's Layer_Info structure.