Yes. We have this option in our to-do list.

Is a flash(SWF) player layer in your to-do list?

What do you mean? you think a captured desktop layer is not popular?
What do you think about a screensaver which capturing the current screen and showing current desktop and icons but with flying butterflies? and ….

google:
you can use d3d9 to get the backbuffer, and save that to a temp png file using the d3dx library:

IDirect3DSurface9 *surface ;

// GetBackBuffer
idirect3ddevice9->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_MONO, &surface ) ;

// save the surface
D3DXSaveSurfaceToFileA( “filename.png”, D3DXIFF_PNG, surface, NULL, NULL ) ;

SAFE_RELEASE( surface ) ;

To do this you should create your swapbuffer with

d3dpps.SwapEffect = D3DSWAPEFFECT_COPY ; // for screenshots.

(So you guarantee the backbuffer isn’t mangled before you take the screenshot).

We have a very long to-do list and add popular requests first.