DXGKDDI_MONITORDESCRIPTORSET_ACQUIREFIRSTDESCRIPTORINFO callback function (d3dkmddi.h)
The pfnAcquireFirstDescriptorInfo function returns the first descriptor in a monitor descriptor set object.
Syntax
DXGKDDI_MONITORDESCRIPTORSET_ACQUIREFIRSTDESCRIPTORINFO DxgkddiMonitordescriptorsetAcquirefirstdescriptorinfo;
NTSTATUS DxgkddiMonitordescriptorsetAcquirefirstdescriptorinfo(
[in] IN_CONST_D3DKMDT_HMONITORDESCRIPTORSET hMonitorDescriptorSet,
[out] DEREF_OUT_CONST_PPD3DKMDT_MONITOR_DESCRIPTOR ppFirstMonitorDescriptorInfo
)
{...}
Parameters
[in] hMonitorDescriptorSet
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.
[out] ppFirstMonitorDescriptorInfo
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 code | Description |
|---|---|
| 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
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista |
| Target Platform | Desktop |
| Header | d3dkmddi.h (include D3dkmddi.h) |
| IRQL | PASSIVE_LEVEL |