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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	#ifdef __GNUG__
	16	#pragma interface "dde.h"
	17	#endif
	18
	19	#include "wx/ipcbase.h"
	20
	21	/*
	22	* Mini-DDE implementation
	23
	24	Most transactions involve a topic name and an item name (choose these
	25	as befits your application).
	26
	27	A client can:
	28
	29	- ask the server to execute commands (data) associated with a topic
	30	- request data from server by topic and item
	31	- poke data into the server
	32	- ask the server to start an advice loop on topic/item
	33	- ask the server to stop an advice loop
	34
	35	A server can:
	36
	37	- respond to execute, request, poke and advice start/stop
	38	- send advise data to client
	39
	40	Note that this limits the server in the ways it can send data to the
	41	client, i.e. it can't send unsolicited information.
	42	*
	43	*/
	44
	45	class WXDLLEXPORT wxDDEServer;
	46	class WXDLLEXPORT wxDDEClient;
	47
	48	class WXDLLEXPORT wxDDEConnection: public wxConnectionBase
	49	{
	50	DECLARE_DYNAMIC_CLASS(wxDDEConnection)
	51	public:
	52	wxDDEConnection(char *buffer, int size);
	53	wxDDEConnection(void);
	54	~wxDDEConnection(void);
	55
	56	// Calls that CLIENT can make
	57	virtual bool Execute(const wxChar *data, int size = -1, wxIPCFormat format = wxIPC_TEXT);
	58	virtual char Request(const wxString& item, int size = NULL, wxIPCFormat format = wxIPC_TEXT);
	59	virtual bool Poke(const wxString& item, wxChar *data, int size = -1, wxIPCFormat format = wxIPC_TEXT);
	60	virtual bool StartAdvise(const wxString& item);
	61	virtual bool StopAdvise(const wxString& item);
	62
	63	// Calls that SERVER can make
	64	virtual bool Advise(const wxString& item, wxChar *data, int size = -1, wxIPCFormat format = wxIPC_TEXT);
	65
	66	// Calls that both can make
	67	virtual bool Disconnect(void);
	68
	69	// Default behaviour is to delete connection and return TRUE
	70	virtual bool OnDisconnect(void);
	71
	72	public:
	73	char* m_bufPtr;
	74	wxString m_topicName;
	75	int m_bufSize;
	76	wxDDEServer* m_server;
	77	wxDDEClient* m_client;
	78
	79	WXHCONV m_hConv;
	80	wxChar* m_sendingData;
	81	int m_dataSize;
	82	wxIPCFormat m_dataType;
	83	};
	84
	85	class WXDLLEXPORT wxDDEServer: public wxServerBase
	86	{
	87	DECLARE_DYNAMIC_CLASS(wxDDEServer)
	88	public:
	89
	90	wxDDEServer(void);
	91	~wxDDEServer(void);
	92	bool Create(const wxString& server_name); // Returns FALSE if can't create server (e.g. port
	93	// number is already in use)
	94	virtual wxConnectionBase *OnAcceptConnection(const wxString& topic);
	95
	96	////////////////////////////////////////////////////////////
	97	// Implementation
	98
	99	// Find/delete wxDDEConnection corresponding to the HCONV
	100	wxDDEConnection *FindConnection(WXHCONV conv);
	101	bool DeleteConnection(WXHCONV conv);
	102	inline wxString& GetServiceName(void) const { return (wxString&) m_serviceName; }
	103	inline wxList& GetConnections(void) const { return (wxList&) m_connections; }
	104
	105	protected:
	106	int m_lastError;
	107	wxString m_serviceName;
	108	wxList m_connections;
	109	};
	110
	111	class WXDLLEXPORT wxDDEClient: public wxClientBase
	112	{
	113	DECLARE_DYNAMIC_CLASS(wxDDEClient)
	114	public:
	115	wxDDEClient(void);
	116	~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	inline wxList& GetConnections(void) const { return (wxList&) m_connections; }
	130
	131	protected:
	132	int m_lastError;
	133	wxList m_connections;
	134	};
	135
	136	void WXDLLEXPORT wxDDEInitialize();
	137	void WXDLLEXPORT wxDDECleanUp();
	138
	139	#endif
	140	// _WX_DDE_H_