DXGKDDI_MONITORFREQUENCYRANGESET_ACQUIREFIRSTFREQUENCYRANGEINFO callback function (d3dkmddi.h)
The DXGKDDI_MONITORFREQUENCYRANGESET_ACQUIREFIRSTFREQUENCYRANGEINFO function returns the first frequency range descriptor in a specified monitor frequency range set object.
Syntax
DXGKDDI_MONITORFREQUENCYRANGESET_ACQUIREFIRSTFREQUENCYRANGEINFO DxgkddiMonitorfrequencyrangesetAcquirefirstfrequencyrangeinfo;
NTSTATUS DxgkddiMonitorfrequencyrangesetAcquirefirstfrequencyrangeinfo(
[in] IN_CONST_D3DKMDT_HMONITORFREQUENCYRANGESET hMonitorFrequencyRangeSet,
[out] DEREF_OUT_CONST_PPD3DKMDT_MONITOR_FREQUENCY_RANGE ppFirstMonitorFrequencyRangeInfo
)
{...}
Parameters
[in] hMonitorFrequencyRangeSet
A handle to a monitor frequency range set object. The display miniport driver previously obtained this handle by calling the pfnGetMonitorFrequencyRangeSet function of the Monitor interface.
[out] ppFirstMonitorFrequencyRangeInfo
A pointer to a variable that receives a pointer to a D3DKMDT_MONITOR_FREQUENCY_RANGE structure.
Return value
The pfnAcquireFirstFrequencyRangeInfo function returns one of the following values.
Return code | Description |
---|---|
STATUS_SUCCESS | The function successfully returned the first frequency range descriptor. |
STATUS_GRAPHICS_DATASET_IS_EMPTY | The function succeeded, but there were no frequency range descriptors in the set. |
STATUS_INVALID_PARAMETER | An invalid parameter was supplied. |
STATUS_INVALID_MONITOR_FREQUENCYRANGESET | The handle supplied in hMonitorFrequencyRangeSet was invalid. |
This function might also return other error codes defined in Ntstatus.h.
Remarks
When you have finished using the D3DKMDT_MONITOR_FREQUENCY_RANGE structure, you must release the structure by calling pfnReleaseFrequencyRangeInfo.
You can obtain all the descriptors in a monitor frequency range set by calling pfnAcquireFirstFrequencyRangeInfo and then making a sequence of calls to pfnAcquireNextFrequencyRangeInfo.
Requirements
Requirement | Value |
---|---|
Minimum supported client | Windows Vista |
Target Platform | Desktop |
Header | d3dkmddi.h (include D3dkmddi.h) |
IRQL | PASSIVE_LEVEL |