IXRVisualStateGroupCollection::Add (Compact 2013)
3/28/2014
This method adds an item to the end of the IXRVisualStateGroupCollection collection and retrieves the index that indicates where it was added.
Syntax
virtual HRESULT STDMETHODCALLTYPE Add(
__in IXRVisualStateGroup* pObject,
__out_opt int* pIndex
) = 0;
Parameters
- pObject
[in] Pointer to an IXRVisualStateGroup 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 an HRESULT that indicates success or failure. Possible return values include the following.
Value |
Description |
|---|---|
S_OK |
Success. |
XR_E_COLLECTION_ELEMENT_ALREADY_ASSOCIATED |
You attempted to add an item that already exists. |
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 |