### IDirectDraw2::RestoreDisplayMode

The IDirectDraw2::RestoreDisplayMode method resets the mode of the display device hardware for the primary surface to what it was before the IDirectDraw2::SetDisplayMode method was called. Exclusive-level access is required to use this method.

HRESULT RestoreDisplayMode();

##### 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_GENERIC
DDERR_INVALIDOBJECT
DDERR_INVALIDPARAMS
DDERR_LOCKEDSURFACES
DDERR_NOEXCLUSIVEMODE

##### See Also

IDirectDraw2::SetDisplayMode, IDirectDraw2::EnumDisplayModes, IDirectDraw2::SetCooperativeLevel