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Commit	Line	Data
	1	\section{\class{wxDDEClient}}\label{wxddeclient}
	2
	3	A wxDDEClient object represents the client part of a client-server DDE
	4	(Dynamic Data Exchange) conversation.
	5
	6	To create a client which can communicate with a suitable server,
	7	you need to derive a class from wxDDEConnection and another from wxDDEClient.
	8	The custom wxDDEConnection class will intercept communications in
	9	a `conversation' with a server, and the custom wxDDEServer is required
	10	so that a user-overridden \helpref{wxDDEClient::OnMakeConnection}{wxddeclientonmakeconnection} member can return
	11	a wxDDEConnection of the required class, when a connection is made.
	12
	13	This DDE-based implementation is
	14	available on Windows only, but a platform-independent, socket-based version
	15	of this API is available using \helpref{wxTCPClient}{wxtcpclient}.
	16
	17	\wxheading{Derived from}
	18
	19	wxClientBase\\
	20	\helpref{wxObject}{wxobject}
	21
	22	\wxheading{Include files}
	23
	24	<wx/dde.h>
	25
	26	\wxheading{See also}
	27
	28	\helpref{wxDDEServer}{wxddeserver}, \helpref{wxDDEConnection}{wxddeconnection},
	29	\helpref{Interprocess communications overview}{ipcoverview}
	30
	31	\latexignore{\rtfignore{\wxheading{Members}}}
	32
	33	\membersection{wxDDEClient::wxDDEClient}
	34
	35	\func{}{wxDDEClient}{\void}
	36
	37	Constructs a client object.
	38
	39	\membersection{wxDDEClient::MakeConnection}\label{wxddeclientmakeconnection}
	40
	41	\func{wxConnectionBase *}{MakeConnection}{\param{const wxString\& }{host}, \param{const wxString\& }{service}, \param{const wxString\& }{topic}}
	42
	43	Tries to make a connection with a server specified by the host
	44	(machine name under UNIX, ignored under Windows), service name (must
	45	contain an integer port number under UNIX), and topic string. If the
	46	server allows a connection, a wxDDEConnection object will be returned.
	47	The type of wxDDEConnection returned can be altered by overriding
	48	the \helpref{wxDDEClient::OnMakeConnection}{wxddeclientonmakeconnection} member to return your own
	49	derived connection object.
	50
	51	\membersection{wxDDEClient::OnMakeConnection}\label{wxddeclientonmakeconnection}
	52
	53	\func{wxConnectionBase *}{OnMakeConnection}{\void}
	54
	55	The type of \helpref{wxDDEConnection}{wxddeconnection} returned from a \helpref{wxDDEClient::MakeConnection}{wxddeclientmakeconnection} call can
	56	be altered by deriving the {\bf OnMakeConnection} member to return your
	57	own derived connection object. By default, a wxDDEConnection
	58	object is returned.
	59
	60	The advantage of deriving your own connection class is that it will
	61	enable you to intercept messages initiated by the server, such
	62	as \helpref{wxDDEConnection::OnAdvise}{wxddeconnectiononadvise}. You may also want to
	63	store application-specific data in instances of the new class.
	64
	65	\membersection{wxDDEClient::ValidHost}
	66
	67	\func{bool}{ValidHost}{\param{const wxString\& }{host}}
	68
	69	Returns true if this is a valid host name, false otherwise. This always
	70	returns true under MS Windows.
	71