IPortableDeviceValues::GetAt method
The GetAt method retrieves a value from the collection using the supplied zero-based index.
Syntax
HRESULT GetAt(
[in] const DWORD index,
[in, out] PROPERTYKEY *pKey,
[in, out] PROPVARIANT *pValue
);
Parameters
-
index [in]
-
A DWORD that specifies a zero-based index in the collection.
-
pKey [in, out]
-
An optional PROPERTYKEY pointer that retrieves the key of the specified item.
-
pValue [in, out]
-
An optional PROPVARIANT that retrieves the value of the specified item. The caller must free the memory by calling PropVariantClear when done with it.
Return value
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Return code | Description |
|---|---|
|
The method succeeded. |
|
An invalid index number was specified. |
Remarks
If a property indicates a value of type VT_UNKNOWN, the property will be one of the Windows Portable Devices (IPortableDeviceKeyCollection, IPortableDeviceValuesCollection, IPortableDeviceValues or IPortableDevicePropVariantCollection). No other interfaces can be returned by Windows Portable Devices.
Requirements
| Requirement | Value |
|---|---|
| Header |
|
| Library |
|