nt/ddeclient.c

   1 /* Simple client interface to DDE servers.
   2    Copyright (C) 1998, 2001-2015 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Emacs.
   5
   6 GNU Emacs is free software: you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation, either version 3 of the License, or
   9 (at your option) any later version.
  10
  11 GNU Emacs is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #include <windows.h>
  20 #include <ddeml.h>
  21 #include <stdlib.h>
  22 #include <stdio.h>
  23
  24 HDDEDATA CALLBACK
  25 DdeCallback (UINT uType, UINT uFmt, HCONV hconv,
  26              HSZ hsz1, HSZ hsz2, HDDEDATA hdata,
  27              DWORD dwData1, DWORD dwData2)
  28 {
  29   return ((HDDEDATA) NULL);
  30 }
  31
  32 #define DdeCommand(str)         \
  33         DdeClientTransaction (str, strlen (str)+1, HConversation, (HSZ)NULL, \
  34                               CF_TEXT, XTYP_EXECUTE, 30000, NULL)
  35
  36 int
  37 main (int argc, char *argv[])
  38 {
  39   DWORD idDde = 0;
  40   HCONV HConversation;
  41   HSZ   Server;
  42   HSZ   Topic = 0;
  43   char  command[1024];
  44
  45   if (argc < 2)
  46     {
  47       fprintf (stderr, "usage: ddeclient server [topic]\n");
  48       exit (1);
  49     }
  50
  51   DdeInitialize (&idDde, (PFNCALLBACK)DdeCallback, APPCMD_CLIENTONLY, 0);
  52
  53   Server = DdeCreateStringHandle (idDde, argv[1], CP_WINANSI);
  54   if (argc > 2)
  55     Topic = DdeCreateStringHandle (idDde, argv[2], CP_WINANSI);
  56
  57   HConversation = DdeConnect (idDde, Server, Topic, NULL);
  58   if (HConversation != 0)
  59     {
  60       while (fgets (command, sizeof(command), stdin) != NULL)
  61         DdeCommand (command);
  62
  63       DdeDisconnect (HConversation);
  64     }
  65
  66   DdeFreeStringHandle (idDde, Server);
  67   if (Topic)
  68     DdeFreeStringHandle (idDde, Topic);
  69   DdeUninitialize (idDde);
  70
  71   return (0);
  72 }
  73