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Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: dde.h
	3	// Purpose: DDE class
	4	// Author: Julian Smart
	5	// Modified by:
	6	// Created: 01/02/97
	7	// RCS-ID: $Id$
	8	// Copyright: (c) Julian Smart
	9	// Licence: wxWindows licence
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	#ifndef _WX_DDE_H_
	13	#define _WX_DDE_H_
	14
	15	#include "wx/ipcbase.h"
	16
	17	/*
	18	* Mini-DDE implementation
	19
	20	Most transactions involve a topic name and an item name (choose these
	21	as befits your application).
	22
	23	A client can:
	24
	25	- ask the server to execute commands (data) associated with a topic
	26	- request data from server by topic and item
	27	- poke data into the server
	28	- ask the server to start an advice loop on topic/item
	29	- ask the server to stop an advice loop
	30
	31	A server can:
	32
	33	- respond to execute, request, poke and advice start/stop
	34	- send advise data to client
	35
	36	Note that this limits the server in the ways it can send data to the
	37	client, i.e. it can't send unsolicited information.
	38	*
	39	*/
	40
	41	class WXDLLIMPEXP_BASE wxDDEServer;
	42	class WXDLLIMPEXP_BASE wxDDEClient;
	43
	44	class WXDLLIMPEXP_BASE wxDDEConnection: public wxConnectionBase
	45	{
	46	DECLARE_DYNAMIC_CLASS(wxDDEConnection)
	47	public:
	48	wxDDEConnection(wxChar *buffer, int size); // use external buffer
	49	wxDDEConnection(); // use internal buffer
	50	virtual ~wxDDEConnection(void);
	51
	52	// Calls that CLIENT can make
	53	virtual bool Execute(const wxChar *data, int size = -1, wxIPCFormat format = wxIPC_TEXT);
	54	virtual bool Execute(const wxString& str) { return Execute(str, -1, wxIPC_TEXT); }
	55	virtual wxChar Request(const wxString& item, int size = NULL, wxIPCFormat format = wxIPC_TEXT);
	56	virtual bool Poke(const wxString& item, wxChar *data, int size = -1, wxIPCFormat format = wxIPC_TEXT);
	57	virtual bool StartAdvise(const wxString& item);
	58	virtual bool StopAdvise(const wxString& item);
	59
	60	// Calls that SERVER can make
	61	virtual bool Advise(const wxString& item, wxChar *data, int size = -1, wxIPCFormat format = wxIPC_TEXT);
	62
	63	// Calls that both can make
	64	virtual bool Disconnect(void);
	65
	66	// Default behaviour is to delete connection and return true
	67	virtual bool OnDisconnect(void);
	68
	69	public:
	70	wxString m_topicName;
	71	wxDDEServer* m_server;
	72	wxDDEClient* m_client;
	73
	74	WXHCONV m_hConv;
	75	wxChar* m_sendingData;
	76	int m_dataSize;
	77	wxIPCFormat m_dataType;
	78
	79	DECLARE_NO_COPY_CLASS(wxDDEConnection)
	80	};
	81
	82	class WXDLLIMPEXP_BASE wxDDEServer: public wxServerBase
	83	{
	84	DECLARE_DYNAMIC_CLASS(wxDDEServer)
	85	public:
	86
	87	wxDDEServer(void);
	88	virtual ~wxDDEServer(void);
	89	bool Create(const wxString& server_name); // Returns false if can't create server (e.g. port
	90	// number is already in use)
	91	virtual wxConnectionBase *OnAcceptConnection(const wxString& topic);
	92
	93	////////////////////////////////////////////////////////////
	94	// Implementation
	95
	96	// Find/delete wxDDEConnection corresponding to the HCONV
	97	wxDDEConnection *FindConnection(WXHCONV conv);
	98	bool DeleteConnection(WXHCONV conv);
	99	inline wxString& GetServiceName(void) const { return (wxString&) m_serviceName; }
	100	inline wxDDEConnectionList& GetConnections(void) const
	101	{
	102	return (wxDDEConnectionList&) m_connections;
	103	}
	104
	105	protected:
	106	int m_lastError;
	107	wxString m_serviceName;
	108	wxDDEConnectionList m_connections;
	109	};
	110
	111	class WXDLLIMPEXP_BASE wxDDEClient: public wxClientBase
	112	{
	113	DECLARE_DYNAMIC_CLASS(wxDDEClient)
	114	public:
	115	wxDDEClient(void);
	116	virtual ~wxDDEClient(void);
	117	bool ValidHost(const wxString& host);
	118	virtual wxConnectionBase *MakeConnection(const wxString& host, const wxString& server, const wxString& topic);
	119	// Call this to make a connection.
	120	// Returns NULL if cannot.
	121	virtual wxConnectionBase *OnMakeConnection(void); // Tailor this to return own connection.
	122
	123	////////////////////////////////////////////////////////////
	124	// Implementation
	125
	126	// Find/delete wxDDEConnection corresponding to the HCONV
	127	wxDDEConnection *FindConnection(WXHCONV conv);
	128	bool DeleteConnection(WXHCONV conv);
	129
	130	inline wxDDEConnectionList& GetConnections(void) const
	131	{
	132	return (wxDDEConnectionList&) m_connections;
	133	}
	134
	135	protected:
	136	int m_lastError;
	137	wxDDEConnectionList m_connections;
	138	};
	139
	140	void WXDLLIMPEXP_BASE wxDDEInitialize();
	141	void WXDLLIMPEXP_BASE wxDDECleanUp();
	142
	143	#endif
	144	// _WX_DDE_H_