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DXGKDDI_VIDPNSOURCEMODESET_GETNUMMODES callback function (d3dkmddi.h)

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The pfnGetNumModes function returns the number of source modes in a specified VidPN source mode set.

Syntax

DXGKDDI_VIDPNSOURCEMODESET_GETNUMMODES DxgkddiVidpnsourcemodesetGetnummodes;

NTSTATUS DxgkddiVidpnsourcemodesetGetnummodes(
  [in]  IN_CONST_D3DKMDT_HVIDPNSOURCEMODESET hVidPnSourceModeSet,
  [out] OUT_PSIZE_T_CONST pNumSourceModes
)
{...}

Parameters

[in] hVidPnSourceModeSet

A handle to a VidPN source mode set object. The display miniport driver previously obtained this handle by calling the pfnAcquireSourceModeSet function of the DXGK_VIDPN_INTERFACE interface.

[out] pNumSourceModes

A pointer to a SIZE_T-typed variable that receives the number of source modes in the set.

Return value

The pfnGetNumModes function returns one of the following values:

Return code Description
STATUS_SUCCESS The function succeeded.
STATUS_GRAPHICS_INVALID_VIDPN_SOURCEMODESET The handle supplied in hVidPnSourceModeSet was invalid.

Remarks

The D3DKMDT_HVIDPNSOURCEMODESET data type is defined in D3dkmdt.h.

Requirements

Requirement Value
Minimum supported client Windows Vista
Target Platform Desktop
Header d3dkmddi.h (include D3dkmddi.h)
IRQL PASSIVE_LEVEL

See also

pfnAcquireFirstModeInfo

pfnAcquireNextModeInfo