// d3dumddi.h

PFND3DDDI_FLIPOVERLAYCB Pfnd3dddiFlipoverlaycb;

HRESULT Pfnd3dddiFlipoverlaycb(
  HANDLE hDevice,
  const D3DDDICB_FLIPOVERLAY *unnamedParam2
)
{...}
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Windows Driver Kit DDI reference (nc-d3dumddi-pfnd3dddi_flipoverlaycb)

PFND3DDDI_FLIPOVERLAYCB callback function

Description

The pfnFlipOverlayCb function changes the allocation to display on the overlay or indicates to display the other field of the currently displaying allocation, when deinterlacing an interleaved resource.

Parameters

`hDevice`

A handle to the display device (graphics context).

`unnamedParam2`

pData [in]

A pointer to a D3DDDICB_FLIPOVERLAY structure that describes how to change the display on the overlay.

Return value

pfnFlipOverlayCb returns one of the following values:

Return code	Description
S_OK	The display on the overlay object was successfully changed.
E_INVALIDARG	Parameters were validated and determined to be incorrect.
E_OUTOFMEMORY	pfnFlipOverlayCb could not allocate memory that was required for it to complete.

This function might also return other HRESULT values.

PFND3DDDI_FLIPOVERLAYCB - NtDoc