| Value | Meaning |
|---|---|
| INVALID0 | The object does not have a layer |
| BACKGROUND1 | This layer is reserved for the desktop background |
| CANVAS2 | This layer is used for Canvas components |
| WIDGET3 | This layer is normally used for components |
| MDI4 | This layer is used for layered components |
| POPUP5 | This layer is used for popup components, such as menus |
| OVERLAY6 | This layer is reserved for future use. |
| WINDOW7 | This layer is used for toplevel windows. |
Describes the layer of a component
These enumerated "layer values" are used when determining which UI rendering layer a component is drawn into, which can help in making determinations of when components occlude one another.