samples/dde/client.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        client.cpp
   3 // Purpose:     DDE sample: client
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     25/01/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16 #pragma hdrstop
  17 #endif
  18
  19 #ifndef WX_PRECOMP
  20 #include "wx/wx.h"
  21 #endif
  22
  23 // Settings common to both executables: determines whether
  24 // we're using TCP/IP or real DDE.
  25
  26 #include "ddesetup.h"
  27
  28 #if defined(__WXGTK__) || defined(__WXMOTIF__)
  29 #include "mondrian.xpm"
  30 #endif
  31
  32 #include "client.h"
  33
  34 MyFrame *frame = NULL;
  35
  36 IMPLEMENT_APP(MyApp)
  37
  38 char ipc_buffer[4000];
  39 wxListBox *the_list = NULL;
  40
  41 MyConnection *the_connection = NULL;
  42 MyClient *my_client ;
  43
  44 // The `main program' equivalent, creating the windows and returning the
  45 // main frame
  46 bool MyApp::OnInit()
  47 {
  48   // Create the main frame window
  49   frame = new MyFrame(NULL, "Client", wxPoint(400, 0), wxSize(400, 300));
  50
  51   // Give it an icon
  52   frame->SetIcon(wxICON(mondrian));
  53
  54   // Make a menubar
  55   wxMenu *file_menu = new wxMenu;
  56
  57   file_menu->Append(CLIENT_EXECUTE, "Execute");
  58   file_menu->Append(CLIENT_REQUEST, "Request");
  59   file_menu->Append(CLIENT_POKE, "Poke");
  60   file_menu->Append(CLIENT_QUIT, "Quit");
  61
  62   wxMenuBar *menu_bar = new wxMenuBar;
  63
  64   menu_bar->Append(file_menu, "File");
  65
  66   // Associate the menu bar with the frame
  67   frame->SetMenuBar(menu_bar);
  68
  69   // Make a panel
  70   frame->panel = new wxPanel(frame, -1, wxPoint(0, 0), wxSize(400, 250));
  71   the_list = new wxListBox(frame->panel, CLIENT_LISTBOX, wxPoint(5, 5), wxSize(150, 120));
  72   the_list->Append("Apple");
  73   the_list->Append("Pear");
  74   the_list->Append("Orange");
  75   the_list->Append("Banana");
  76   the_list->Append("Fruit");
  77
  78   frame->panel->Fit();
  79   frame->Fit();
  80
  81   wxString server = "4242";
  82   wxString hostName;
  83   wxGetHostName(hostName);
  84
  85   if (argc > 1)
  86     server = argv[1];
  87   if (argc > 2)
  88     hostName = argv[2];
  89
  90   // Create a new client
  91   my_client = new MyClient;
  92   the_connection = (MyConnection *)my_client->MakeConnection(hostName, server, "IPC TEST");
  93
  94   if (!the_connection)
  95   {
  96     wxMessageBox("Failed to make connection to server", "Client Demo Error");
  97 #ifdef __WXMSW__
  98 //    extern void wxPrintDDEError();
  99 //    wxPrintDDEError();
 100 #endif
 101     return FALSE;
 102   }
 103   the_connection->StartAdvise("Item");
 104
 105   frame->Show(TRUE);
 106
 107   return TRUE;
 108 }
 109
 110 int MyApp::OnExit()
 111 {
 112     if (my_client)
 113       delete my_client ;
 114
 115     return 0;
 116 }
 117
 118 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 119     EVT_MENU(CLIENT_QUIT, MyFrame::OnExit)
 120     EVT_MENU(CLIENT_EXECUTE, MyFrame::OnExecute)
 121     EVT_MENU(CLIENT_POKE, MyFrame::OnPoke)
 122     EVT_MENU(CLIENT_REQUEST, MyFrame::OnRequest)
 123     EVT_CLOSE(MyFrame::OnCloseWindow)
 124 END_EVENT_TABLE()
 125
 126 // Define my frame constructor
 127 MyFrame::MyFrame(wxFrame *frame, const wxString& title, const wxPoint& pos, const wxSize& size):
 128   wxFrame(frame, -1, title, pos, size)
 129 {
 130     panel = NULL;
 131 }
 132
 133 void MyFrame::OnExecute(wxCommandEvent& event)
 134 {
 135       if (the_connection)
 136         the_connection->Execute("Hello from the client!");
 137 }
 138
 139 void MyFrame::OnPoke(wxCommandEvent& event)
 140 {
 141       if (the_connection)
 142         the_connection->Poke("An item", "Some data to poke at the server!");
 143 }
 144
 145 void MyFrame::OnRequest(wxCommandEvent& event)
 146 {
 147       if (the_connection)
 148       {
 149         char *data = the_connection->Request("An item");
 150         if (data)
 151           wxMessageBox(data, "Client: Request", wxOK);
 152       }
 153 }
 154
 155 void MyFrame::OnExit(wxCommandEvent& event)
 156 {
 157   if (the_connection)
 158     the_connection->Disconnect();
 159
 160   this->Destroy();
 161 }
 162
 163 // Define the behaviour for the frame closing
 164 void MyFrame::OnCloseWindow(wxCloseEvent& event)
 165 {
 166   if (the_connection)
 167   {
 168     the_connection->Disconnect();
 169   }
 170   this->Destroy();
 171 }
 172
 173 MyClient::MyClient(void)
 174 {
 175 }
 176
 177 wxConnectionBase *MyClient::OnMakeConnection(void)
 178 {
 179   return new MyConnection;
 180 }
 181
 182 MyConnection::MyConnection(void):wxConnection(ipc_buffer, 3999)
 183 {
 184 }
 185
 186 MyConnection::~MyConnection(void)
 187 {
 188   the_connection = NULL;
 189 }
 190
 191 bool MyConnection::OnAdvise(const wxString& topic, const wxString& item, char *data, int size, wxIPCFormat format)
 192 {
 193   if (the_list)
 194   {
 195     int n = the_list->FindString(data);
 196     if (n > -1)
 197       the_list->SetSelection(n);
 198   }
 199   return TRUE;
 200 }
 201
 202 bool MyConnection::OnDisconnect()
 203 {
 204     frame->Destroy();
 205
 206     the_connection = NULL;
 207     delete this;
 208
 209     return TRUE;
 210 }
 211