/// <summary>
/// Constructor creates an instance of the class from a pointer address, and expands
/// the data packet into the originating channel name and message.
/// </summary>
/// <param name = "lpParam">A pointer the a COPYDATASTRUCT containing information required to
/// expand the DataGram.</param>
private WinMsgDataGram(IntPtr lpParam)
{
allocatedMemory = false;
dataStruct = (Native.COPYDATASTRUCT)Marshal.PtrToStructure(lpParam, typeof(Native.COPYDATASTRUCT));
var bytes = new byte[dataStruct.cbData];
Marshal.Copy(dataStruct.lpData, bytes, 0, dataStruct.cbData);
string rawmessage;
using (var stream = new MemoryStream(bytes))
{
var b = new BinaryFormatter();
rawmessage = (string)b.Deserialize(stream);
}
dataGram = JsonConvert.DeserializeObject <DataGram>(rawmessage);
}
private TypedDataGram(DataGram dataGram)
{
Validate.That(dataGram).IsNotNull();
this.dataGram = dataGram;
}
/// <summary>
/// Constructor which creates the data gram from a message and channel name.
/// </summary>
/// <param name = "serializer"></param>
/// <param name = "channel">The channel through which the message will be sent.</param>
/// <param name = "message">The string message to send.</param>
internal WinMsgDataGram(string channel, string message)
{
allocatedMemory = false;
dataStruct = new Native.COPYDATASTRUCT();
dataGram = new DataGram(channel, message);
}
/// <summary>
/// Constructor used to create a new instance from a DataGram struct.
/// </summary>
/// <param name = "dataGram">The DataGram instance.</param>
public MessageEventArgs(DataGram dataGram)
{
this.dataGram = dataGram;
}
