public HResult GetAllocatedString(Guid guidKey,
out string ppwszValue,
out int pcchLength)
{
return(m_Attribs.GetAllocatedString(guidKey,
out ppwszValue, out pcchLength));
}
/// <summary>
/// Retrieves a string associated with a key.
/// </summary>
/// <param name="attributes">A valid IMFAttributes instance.</param>
/// <param name="guidKey">Guid that identifies which value to retrieve.</param>
/// <param name="value">Receives the string.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult GetAllocatedString(this IMFAttributes attributes, Guid guidKey, out string value)
{
if (attributes == null)
{
throw new ArgumentNullException("attributes");
}
int stringLength;
return(attributes.GetAllocatedString(guidKey, out value, out stringLength));
}