IXRPointKeyFrameCollection::Add (Compact 2013)

项目
04/19/2017

3/28/2014

This method adds an item to the end of the IXRPointKeyFrameCollection collection and retrieves the index that indicates where it was added.

Syntax

virtual HRESULT STDMETHODCALLTYPE Add(
    __in IXRPointKeyFrame* pObject,
    __out_opt int* pIndex
) = 0;

Parameters

pObject
[in] Pointer to an IXRPointKeyFrame object that represents an item to add to this collection.

pIndex
[out] Optional. Pointer to an integer value that indicates the zero-based index of the item added to this collection.

Return Value

Returns S_OK if successful; otherwise, returns an HRESULT error code. For common error codes for XAML for Windows Embedded , see XAML for Windows Embedded Error Messages. If you attempt to add an item that already exists, the Add method returns XR_E_COLLECTION_ELEMENT_ALREADY_ASSOCIATED.

Remarks

Because an object cannot exist more than once in a visual tree, an item can occur only once in this object collection.

.NET Framework Equivalent

System.Windows.PresentationFrameworkCollection(T).Add

Requirements

Header	XamlRuntime.h
sysgen	SYSGEN_XAML_RUNTIME

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