IXRDoubleKeyFrameCollection::IndexOf (Compact 2013)

3/28/2014

This method searches for the specified item and retrieves the zero-based index of its occurrence within the IXRDoubleKeyFrameCollection collection.

Syntax

virtual HRESULT STDMETHODCALLTYPE IndexOf(
    __in IXRDoubleKeyFrame* pObject,
    __out_opt int* pIndex
) = 0;

Parameters

• pObject
  [in] Pointer to an IXRDoubleKeyFrame object that represents an item to locate in this collection.

• pIndex
  [out] Pointer to an integer value that indicates the zero-based index of the last occurrence of pObject.

Return Value

Returns an HRESULT that indicates success or failure.

Remarks

This method performs a linear search through the collection. Therefore, the average execution time is proportional to the number of items. You can retrieve the number of items by using IXRDoubleKeyFrameCollection::GetCount.

By default, this method searches the collection starting at the last item, and ending at the last item. 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).IList.IndexOf

Requirements

See Also

Reference

IXRDoubleKeyFrameCollection
IXRDoubleAnimationUsingKeyFrames::GetKeyFrames