int OleInterop.IDataObject.DAdvise(OleInterop.FORMATETC[] pFormatetc, uint ADVF, OleInterop.IAdviseSink pAdvSink, out uint pdwConnection)
{
if (null != oleData)
{
return(oleData.DAdvise(pFormatetc, ADVF, pAdvSink, out pdwConnection));
}
// We have to call the method in the BCL version of the interface, so we need to
// convert the parameters to the other type of structure.
// As first make sure that the array contains exactly one element.
if ((null == pFormatetc) || (pFormatetc.Length != 1))
{
throw new ArgumentException();
}
// Now convert the patameters
BclComTypes.FORMATETC bclFormat = StructConverter.OleFormatETC2Bcl(ref pFormatetc[0]);
BclComTypes.IAdviseSink bclSink = pAdvSink as BclComTypes.IAdviseSink;
if (null == bclSink)
{
bclSink = new AdviseSink(pAdvSink);
}
int connection;
int hr = bclData.DAdvise(ref bclFormat, (BclComTypes.ADVF)(ADVF), bclSink, out connection);
pdwConnection = (uint)connection;
return(hr);
}
/// <summary>
/// Sets up an advisory connection to the data object.
/// </summary>
/// <param name="dataObject">The data object on which to set the advisory connection.</param>
/// <param name="sink">The advisory sink.</param>
/// <param name="format">The format on which to callback on.</param>
/// <param name="advf">Advisory flags. Can be 0.</param>
/// <returns>The ID of the newly created advisory connection.</returns>
public static int Advise(this System.Runtime.InteropServices.ComTypes.IDataObject dataObject, IAdviseSink sink, string format, ADVF advf)
{
// Internally, we'll listen for any TYMED
FORMATETC formatETC;
FillFormatETC(format, TYMED_ANY, out formatETC);
int connection;
int hr = dataObject.DAdvise(ref formatETC, advf, sink, out connection);
if (hr != 0)
{
Marshal.ThrowExceptionForHR(hr);
}
return(connection);
}