### IDirectDraw2::DuplicateSurface

The IDirectDraw2::DuplicateSurface method duplicates a DirectDrawSurface object.

HRESULT DuplicateSurface(

LPDIRECTDRAWSURFACE lpDDSurface,

LPLPDIRECTDRAWSURFACE FAR *lplpDupDDSurface

);

##### Parameters

lpDDSurface
  Address of the DirectDrawSurface structure to be duplicated.
lplpDupDDSurface
  Address of the DirectDrawSurface pointer that points to the newly created duplicate DirectDrawSurface structure.

##### Return Values

If the method succeeds, the return value is DD_OK.

If the method fails, the return value may be one of the following error values:

DDERR_CANTDUPLICATE
DDERR_INVALIDOBJECT
DDERR_INVALIDPARAMS
DDERR_OUTOFMEMORY
DDERR_SURFACELOST

##### Remarks

This method creates a new DirectDrawSurface object that points to the same surface memory as an existing DirectDrawSurface object. This duplicate can be used just like the original object. The surface memory is released after the last object referencing it is released. A primary surface, 3-D surface, or implicitly created surface cannot be duplicated.