/// <summary>
/// Create a new point-to-point message queue object.
/// </summary>
/// <param name="name">
/// Indicates the name of a named queue. Set to null to create
/// an unnamed queue.
/// </param>
/// <param name="maxMessages">
/// Indicates the length of the queue in messages.
/// </param>
/// <param name="maxMessageSize">
/// Indicates the maximum size of each message in the queue.
/// </param>
/// <param name="readAccess">
/// Set to true if messages will be read from the queue, false
/// if messages will be written to the queue. A read/write
/// queue cannot be created.
/// </param>
/// <param name="flags">
/// Flags indicating how the queue will operate.
/// </param>
public PointToPointMsgQueue(string name,
int maxMessages, int maxMessageSize,
bool readAccess, PointToPointMsgQueueFlags flags)
{
hMsgQueue = IntPtr.Zero;
created = false;
// Set up the descriptor for the queue, based on the
// parameters.
MSGQUEUEOPTIONS opt = new MSGQUEUEOPTIONS();
opt.dwFlags = (int)flags;
opt.dwMaxMessages = maxMessages;
opt.cbMaxMessage = maxMessageSize;
opt.bReadAccess = (readAccess ? 1 : 0);
// Actually create the queue.
hMsgQueue = PointToPointMsgQueuePInvokes.CreateMsgQueue(name, opt);
if (hMsgQueue != IntPtr.Zero)
{
// Get indication of whether we created the queue or
// if we just attached to an existing queue.
uint err = PointToPointMsgQueuePInvokes.GetLastError();
if (err == 0)
{
created = true;
}
else
{
created = false;
}
}
}
/// <summary>
/// Create a new point-to-point message queue object.
/// </summary>
/// <param name="name">
/// Indicates the name of a named queue. Set to null to create
/// an unnamed queue.
/// </param>
/// <param name="maxMessages">
/// Indicates the length of the queue in messages.
/// </param>
/// <param name="maxMessageSize">
/// Indicates the maximum size of each message in the queue.
/// </param>
/// <param name="readAccess">
/// Set to true if messages will be read from the queue, false
/// if messages will be written to the queue. A read/write
/// queue cannot be created.
/// </param>
/// <param name="flags">
/// Flags indicating how the queue will operate.
/// </param>
public PointToPointMsgQueue( string name,
int maxMessages, int maxMessageSize,
bool readAccess, PointToPointMsgQueueFlags flags )
{
hMsgQueue = IntPtr.Zero;
created = false;
// Set up the descriptor for the queue, based on the
// parameters.
MSGQUEUEOPTIONS opt = new MSGQUEUEOPTIONS();
opt.dwFlags = (int)flags;
opt.dwMaxMessages = maxMessages;
opt.cbMaxMessage = maxMessageSize;
opt.bReadAccess = ( readAccess ? 1 : 0 );
// Actually create the queue.
hMsgQueue = PointToPointMsgQueuePInvokes.CreateMsgQueue( name, opt );
if ( hMsgQueue != IntPtr.Zero )
{
// Get indication of whether we created the queue or
// if we just attached to an existing queue.
uint err = PointToPointMsgQueuePInvokes.GetLastError();
if ( err == 0 )
{
created = true;
}
else
{
created = false;
}
}
}
public static extern IntPtr CreateMsgQueue(string name,
MSGQUEUEOPTIONS opt);
public static extern IntPtr CreateMsgQueue( string name, MSGQUEUEOPTIONS opt );