VideoDeviceController.GetDevicePropertyById Method
Definition
Important
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Gets a the value of the property from the capture device driver with the ID with custom header information. You can use this method to query properties that are specific to a particular camera.
public:
virtual VideoDeviceControllerGetDevicePropertyResult ^ GetDevicePropertyById(Platform::String ^ propertyId, IReference<unsigned int> ^ maxPropertyValueSize) = GetDevicePropertyById;VideoDeviceControllerGetDevicePropertyResult GetDevicePropertyById(winrt::hstring const& propertyId, IReference<uint32_t> const& maxPropertyValueSize);public VideoDeviceControllerGetDevicePropertyResult GetDevicePropertyById(string propertyId, System.Nullable<uint> maxPropertyValueSize);function getDevicePropertyById(propertyId, maxPropertyValueSize)Public Function GetDevicePropertyById (propertyId As String, maxPropertyValueSize As Nullable(Of UInteger)) As VideoDeviceControllerGetDevicePropertyResultParameters
- propertyId
-
String
Platform::String
winrt::hstring
The identifier of the property for which the value is retrieved.
- maxPropertyValueSize
-
Windows.Foundation.IReference<unsigned int>
IReference<uint32_t>
The size of the buffer that should be allocated to store the result of the operation. If the driver does not require that a size be specified for the returned property, set this value to null. If the size is required, and you do not provide a value, the Status property of the returned VideoDeviceControllerGetDevicePropertyResult object will be MaxPropertyValueSizeRequired. If the value supplied is too small to store the result of the operation, the returned Status object will be MaxPropertyValueSizeTooSmall, which means that you can retry the call with a larger buffer size.
Returns
A VideoDeviceControllerGetDevicePropertyResult object containing the status of the operation and, if successful, the returned property value.
Windows requirements
| Device family |
Windows 10 Creators Update (introduced in 10.0.15063.0)
|
| API contract |
Windows.Foundation.UniversalApiContract (introduced in v4.0)
|
Remarks
Common device properties are exposed as properties of the VideoDeviceController class. Additional properties are defined in the KSPROPERTYSETID_ExtendedCameraControl property set. Legacy properties are defined in the PROPSETID_VIDCAP_CAMERACONTROL property set. For an example of accessing camera properties by ID, see the Extended Control and Metadata sample.