/// <summary>
/// Creates a named queue.
/// </summary>
/// <param name="forReading">true for a read only queue; false for writing queue</param>
/// <param name="name">Name of queue</param>
/// <param name="maxMessageLength">Maximum length of a message in bytes.</param>
/// <param name="maxMessages">Maximum number of messages allowed in queue, if it is zero, then no restriction on the number of messages.</param>
public P2PMessageQueue(bool forReading, string name, int maxMessageLength, int maxMessages)
{
if (name != null && name.Length > NativeMethods.MAX_PATH)
{
throw new ArgumentException("name too long");
}
if (maxMessageLength <= 0)
{
throw new ArgumentException("maxMessageLength must be positive");
}
if (maxMessages < 0)
{
throw new ArgumentException("maxMessages must be positive or zero (unbounded)");
}
// setup options for creation
MsgQueueOptions opt = new MsgQueueOptions(forReading, maxMessageLength, maxMessages);
// configure queue behaviour
opt.dwFlags = GetBehaviourFlag();
try
{
hQue = NativeMethods.CreateMsgQueue(name, opt);
}
catch (MissingMethodException)
{
throw new PlatformNotSupportedException();
}
if (hQue.Equals(InvalidHandle))
{
throw new ApplicationException("Could not create queue " + name + ", NativeError: " + Marshal.GetLastWin32Error());
}
mIsForReading = forReading;
mName = name;
if (forReading)
{
this.mReadBuffer = new byte[maxMessageLength];
this.StartEventThread();
}
}
public static extern IntPtr OpenMsgQueue(IntPtr hSrcProc, IntPtr hMsgQ, Messaging.MsgQueueOptions lpOptions);
public static extern IntPtr CreateMsgQueue(string lpszName, Messaging.MsgQueueOptions lpOptions);