/// <summary>
/// Check Format related functions
/// </summary>
void TestFormats()
{
int hr;
Guid pFormat;
// Query to see what the preferred time format is
hr = m_ims.QueryPreferredFormat(out pFormat);
Marshal.ThrowExceptionForHR(hr);
// Is the preferred format supported? Certainly hope so.
hr = m_ims.IsFormatSupported(pFormat);
Marshal.ThrowExceptionForHR(hr);
// Might return and S_ code
Debug.Assert(hr == 0);
// Read the current time format
hr = m_ims.GetTimeFormat(out pFormat);
Marshal.ThrowExceptionForHR(hr);
// See if the current format is the one we are using.
// Better be.
hr = m_ims.IsUsingTimeFormat(pFormat);
Marshal.ThrowExceptionForHR(hr);
// Try setting the format to the current value (the
// only one we are sure is supported).
hr = m_ims.SetTimeFormat(pFormat);
Marshal.ThrowExceptionForHR(hr);
}