Effect Background Styles
The following are possible background styles that you can specify when using the LPaintEffect::Draw3dShape function:
| Value | Meaning | 
| EFX_BACKSTYLE_TRANSPARENT | Transparent | 
| EFX_BACKSTYLE_OPAQUE | Opaque | 
| EFX_BACKSTYLE_TRANSLUCENT | Translucent | 
| EFX_BACKSTYLE_TILEDIMAGE | Tiled image | 
| EFX_BACKSTYLE_TRANSLUCENTTILEDIMAGE | Translucent tiled image |