172 lines
7.1 KiB
C++
172 lines
7.1 KiB
C++
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//
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// Copyright 2020 Electronic Arts Inc.
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//
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// TiberianDawn.DLL and RedAlert.dll and corresponding source code is free
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// software: you can redistribute it and/or modify it under the terms of
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// the GNU General Public License as published by the Free Software Foundation,
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// either version 3 of the License, or (at your option) any later version.
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// TiberianDawn.DLL and RedAlert.dll and corresponding source code is distributed
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// in the hope that it will be useful, but with permitted additional restrictions
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// under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT
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// distributed with this program. You should have received a copy of the
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// GNU General Public License along with permitted additional restrictions
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// with this program. If not, see https://github.com/electronicarts/CnC_Remastered_Collection
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/***************************************************************************
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** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S **
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***************************************************************************
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* *
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* Project Name : Dynamic Data Encapsulation *
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* *
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* File Name : DDE.H *
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* *
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* Programmer : Steve Wetherill *
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* *
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* Start Date : June 1, 1996 *
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* *
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* Last Update : June 8, 1996 [SW] *
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* *
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*-------------------------------------------------------------------------*
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* *
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* This is the DDE (Instance_Class) which provides a simple CLIENT/SERVER *
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* DDE model for data transactions between Windows applications. *
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* This is a fairly naieve implementation allowing only one client/server *
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* per Instance_Class object. *
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* *
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* Typical uses for this class are: *
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* *
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* i. Robust verification of whether an application is running *
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* ii. Data transfer between applications *
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* *
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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/*
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***************************** Class defines *****************************
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*/
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#ifndef __DDE_H
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#define __DDE_H
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#define DDE_ADVISE_CONNECT -1 // advisory "client has connected"
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#define DDE_ADVISE_DISCONNECT -2 // advisory "client has disconnected"
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/*
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***************************** Class Declaration *****************************
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*/
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class Instance_Class {
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/*
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---------------------------- Public Interface ----------------------------
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*/
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public:
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/*.....................................................................
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Constructor:
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- takes null terminated ASCII strings names for client and server
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.....................................................................*/
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Instance_Class( // constructor
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LPSTR, // null terminated local sever name string
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LPSTR // null terminated remote server name string
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);
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/*.....................................................................
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Destructor:
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.....................................................................*/
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~Instance_Class(void); // the destructor
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/*.....................................................................
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Send data routine:
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- sends an unsolicited packet of data to the remote server
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.....................................................................*/
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BOOL Poke_Server( LPBYTE, DWORD);
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/*.....................................................................
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Send data routine:
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- sets up DNS for the server and registers a user callback to handle
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incoming data
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.....................................................................*/
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BOOL Register_Server( BOOL (CALLBACK *)(LPBYTE, long));
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/*.....................................................................
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Does a trial connect to the remote server.
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- used to determine whether server is alive or not (and thus running)
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.....................................................................*/
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BOOL Test_Server_Running( HSZ );
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/*.....................................................................
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Enables user callback (disabled by default)
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.....................................................................*/
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BOOL Enable_Callback( BOOL ); // enable or disable callback
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/*.....................................................................
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Open a connection for sending data to remote server
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.....................................................................*/
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BOOL Open_Poke_Connection( HSZ );
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/*.....................................................................
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Close connection with remote server
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.....................................................................*/
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BOOL Close_Poke_Connection( void );
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//
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// static members
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//
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/*.....................................................................
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User callback - called upon receipt of incoming data (static member!)
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.....................................................................*/
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static BOOL (CALLBACK *callback) (
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LPBYTE pointer, // pointer to received data
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long length // if >0 length of received data
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// if <0
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// -1 == client connect detected
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// -2 == client disconnect detected
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);
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/*.....................................................................
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DDE callback, called when DDEML has an event for us
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.....................................................................*/
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static HDDEDATA CALLBACK dde_callback(
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UINT uType, // transaction type
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UINT uFmt, // clipboard data format
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HCONV hconv, // handle of the conversation
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HSZ hsz1, // handle of a string
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HSZ hsz2, // handle of a string
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HDDEDATA hdata, // handle of a global memory object
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DWORD dwData1, // transaction-specific data
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DWORD dwData2 // transaction-specific data
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);
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HANDLE instance; // this application's instance
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HWND hwnd; // valid window handle
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/*.....................................................................
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member variables
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.....................................................................*/
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static DWORD id_inst; // instance identifier set by DdeInitialize
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static BOOL process_pokes; // controls response to pokes
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static char ascii_name[32]; // name of server
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//
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// non-static member variables
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//
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HSZ remote_name; // string handle for remote server name
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HSZ local_name; // string handle for local server name
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HSZ system_topic; // string handle for the "system" topic
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HSZ poke_topic; // string handle for poking data to server topic
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HSZ poke_item; // string handle for poking data to server item
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HCONV conv_handle; // conversation handle
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BOOL dde_error; // error flag
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};
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#endif
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