internal DdeConversation(DdemlConversation conversation)
{
_DdemlObject = conversation;
_DdemlObject.StateChange += this.OnStateChange;
_Service = _DdemlObject.Service;
_Topic = _DdemlObject.Topic;
_Handle = _DdemlObject.Handle;
_IsPaused = _DdemlObject.IsPaused;
}
protected override RequestResult OnRequest(DdemlConversation conversation, string item, int format)
{
DdeServer.RequestResult result = _Parent.OnRequest((DdeConversation)conversation.Tag, item, format);
if (result == DdeServer.RequestResult.NotProcessed)
{
return RequestResult.NotProcessed;
}
if (result == DdeServer.RequestResult.PauseConversation)
{
return RequestResult.PauseConversation;
}
if (result == DdeServer.RequestResult.Processed)
{
return new RequestResult(result.Data);
}
return RequestResult.NotProcessed;
}
protected override PokeResult OnPoke(DdemlConversation conversation, string item, byte[] data, int format)
{
DdeServer.PokeResult result = _Parent.OnPoke((DdeConversation)conversation.Tag, item, data, format);
if (result == DdeServer.PokeResult.NotProcessed)
{
return PokeResult.NotProcessed;
}
if (result == DdeServer.PokeResult.PauseConversation)
{
return PokeResult.PauseConversation;
}
if (result == DdeServer.PokeResult.Processed)
{
return PokeResult.Processed;
}
if (result == DdeServer.PokeResult.TooBusy)
{
return PokeResult.TooBusy;
}
return PokeResult.NotProcessed;
}
protected override ExecuteResult OnExecute(DdemlConversation conversation, string command)
{
DdeServer.ExecuteResult result = _Parent.OnExecute((DdeConversation)conversation.Tag, command);
if (result == DdeServer.ExecuteResult.NotProcessed)
{
return ExecuteResult.NotProcessed;
}
if (result == DdeServer.ExecuteResult.PauseConversation)
{
return ExecuteResult.PauseConversation;
}
if (result == DdeServer.ExecuteResult.Processed)
{
return ExecuteResult.Processed;
}
if (result == DdeServer.ExecuteResult.TooBusy)
{
return ExecuteResult.TooBusy;
}
return ExecuteResult.NotProcessed;
}
protected override void OnDisconnect(DdemlConversation conversation)
{
_Parent.OnDisconnect((DdeConversation)conversation.Tag);
}
protected override void OnAfterConnect(DdemlConversation conversation)
{
DdeConversation c = new DdeConversation(conversation);
conversation.Tag = c;
_Parent.OnAfterConnect(c);
}
protected virtual void OnStopAdvise(DdemlConversation conversation, string item)
{
}
public virtual void Disconnect(DdemlConversation conversation)
{
if (IsDisposed)
{
throw new ObjectDisposedException(this.GetType().ToString());
}
if (!IsRegistered)
{
throw new InvalidOperationException(Resources.NotRegisteredMessage);
}
if (conversation == null)
{
throw new ArgumentNullException("conversation");
}
if (_ConversationTable.ContainsKey(conversation.Handle))
{
// Terminate the conversation.
Ddeml.DdeDisconnect(conversation.Handle);
// Remove the Conversation from the conversation table.
_ConversationTable.Remove(conversation.Handle);
}
}
protected virtual RequestResult OnRequest(DdemlConversation conversation, string item, int format)
{
return RequestResult.NotProcessed;
}
protected virtual PokeResult OnPoke(DdemlConversation conversation, string item, byte[] data, int format)
{
return PokeResult.NotProcessed;
}
protected virtual ExecuteResult OnExecute(DdemlConversation conversation, string command)
{
return ExecuteResult.NotProcessed;
}
protected virtual void OnDisconnect(DdemlConversation conversation)
{
}
protected virtual void OnAfterConnect(DdemlConversation conversation)
{
}
public virtual void Resume(DdemlConversation conversation)
{
if (IsDisposed)
{
throw new ObjectDisposedException(this.GetType().ToString());
}
if (!IsRegistered)
{
throw new InvalidOperationException(Resources.NotRegisteredMessage);
}
if (conversation == null)
{
throw new ArgumentNullException("conversation");
}
if (!conversation.IsPaused)
{
throw new InvalidOperationException(Resources.NotPausedMessage);
}
// Enable the DDEML callback for the specified conversation only.
bool result = Ddeml.DdeEnableCallback(_InstanceId, conversation.Handle, Ddeml.EC_ENABLEALL);
// Check the result to see if the DDEML callback was enabled.
if (!result)
{
int error = Ddeml.DdeGetLastError(_InstanceId);
throw new DdemlException(Resources.ServerResumeFailedMessage, error);
}
// Decrement the conversation's waiting count. The conversation will only resume if the count is zero.
conversation.DecrementWaiting();
}
protected override bool OnStartAdvise(DdemlConversation conversation, string item, int format)
{
return _Parent.OnStartAdvise((DdeConversation)conversation.Tag, item, format);
}
protected override void OnStopAdvise(DdemlConversation conversation, string item)
{
_Parent.OnStopAdvise((DdeConversation)conversation.Tag, item);
}
protected virtual bool OnStartAdvise(DdemlConversation conversation, string item, int format)
{
return true;
}