DXGKDDI_MONITORDESCRIPTORSET_ACQUIREFIRSTDESCRIPTORINFO callback function

The pfnAcquireFirstDescriptorInfo function returns the first descriptor in a monitor descriptor set object.

Syntax


DXGKDDI_MONITORDESCRIPTORSET_ACQUIREFIRSTDESCRIPTORINFO pfnAcquireFirstDescriptorInfo;

NTSTATUS APIENTRY pfnAcquireFirstDescriptorInfo(
  _In_  const D3DKMDT_HMONITORDESCRIPTORSET hMonitorDescriptorSet,
  _Out_ const D3DKMDT_MONITOR_DESCRIPTOR    **ppFirstMonitorDescriptorInfo
)
{ ... }

Parameters

hMonitorDescriptorSet [in]

[in] A handle to a monitor descriptor set object. The display miniport driver previously obtained this handle by calling the pfnGetMonitorDescriptorSet function of the Monitor interface.

ppFirstMonitorDescriptorInfo [out]

[out] A pointer to a variable that receives a pointer to a D3DKMDT_MONITOR_DESCRIPTOR structure. The structure is the first descriptor in the set.

Return value

The pfnAcquireFirstDescriptorInfo function returns one of the following values.

Return codeDescription
STATUS_SUCCESS

The function successfully returned the first descriptor in the set.

STATUS_GRAPHICS_DATASET_IS_EMPTY

The function succeeded, but there were no descriptors in the set.

STATUS_INVALID_PARAMETER

An invalid parameter was supplied.

STATUS_GRAPHICS_INVALID_MONITOR_DESCRIPTORSET

The handle supplied in hMonitorDescriptorSet was invalid.

 

Remarks

When you have finished using the D3DKMDT_MONITOR_DESCRIPTOR structure, you must release the structure by calling pfnReleaseDescriptorInfo.

You can obtain all the descriptors in a monitor descriptor set by calling pfnAcquireFirstDescriptorInfo and then making a sequence of calls to pfnAcquireNextDescriptorInfo.

Requirements

Target platform

Version

Available in Windows Vista and later versions of the Windows operating systems.

Header

D3dkmddi.h (include D3dkmddi.h)

IRQL

PASSIVE_LEVEL

 

 

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