The IDirect3DViewport3::SetBackgroundDepth2 method sets the background-depth field for the viewport.
HRESULT SetBackgroundDepth2(
LPDIRECTDRAWSURFACE4 lpDDS
);
If the method succeeds, the return value is D3D_OK.
If the method fails, the return value may be one of the following values:
DDERR_INVALIDOBJECT |
DDERR_INVALIDPARAMS |
The depth-buffer is filled with the specified depth field when the IDirect3DViewport3::Clear or IDirect3DViewport3::Clear2 methods are called with the D3DCLEAR_ZBUFFER flag is specified.
Windows NT/2000: Requires Windows 2000.
Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
Header: Declared in d3d.h.
Import Library: Use ddraw.lib.