| DirectX SDK | 
The Direct3D7.GetEnumZBufferFormats method creates a Direct3DEnumPixelFormats object.
object.GetEnumZBufferFormats( _ 
    guid As String) As Direct3DEnumPixelFormats
If the method succeeds, a reference to a Direct3DEnumPixelFormats object is returned.
If the method fails, an error is raised and Err.Number may be set to one of the following values:
| DDERR_INVALIDOBJECT | 
| DDERR_INVALIDPARAMS | 
| DDERR_NOZBUFFERHW | 
| DDERR_OUTOFMEMORY | 
For information on trapping errors, see the Visual Basic Error Trapping topic.