// d3dumddi.h

PFND3DDDI_FLIPOVERLAY Pfnd3dddiFlipoverlay;

HRESULT Pfnd3dddiFlipoverlay(
  HANDLE hDevice,
  const D3DDDIARG_FLIPOVERLAY *unnamedParam2
)
{...}
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (nc-d3dumddi-pfnd3dddi_flipoverlay)

PFND3DDDI_FLIPOVERLAY callback function

Description

The FlipOverlay function causes the overlay hardware to start displaying the given new allocation.

Parameters

`hDevice`

A handle to the display device (graphics context).

`unnamedParam2`

pData [in]

A pointer to a D3DDDIARG_FLIPOVERLAY structure that describes the new allocation to display by using the overlay.

Return value

FlipOverlay returns S_OK or an appropriate error result if the new allocation is not successfully displayed.

Remarks

Overlays are independent from the resources that are displayed by using the overlays.

PFND3DDDI_FLIPOVERLAY - NtDoc