<summary>
Get the font feature at the specified index.
</summary>
<param name="fontFeatureIndex">The zero-based index of the font feature to get.</param>
<param name="fontFeature">The font feature.</param>
<returns>
Standard HRESULT error code.
</returns>
<summary> Get the font feature at the specified index. </summary> <param name="fontFeatureIndex">The zero-based index of the font feature to get.</param> <param name="fontFeature">The font feature.</param> <returns> Standard HRESULT error code. </returns>