samples/ipc/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 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/wx.h"
  29 #endif
  30
  31 // Settings common to both executables: determines whether
  32 // we're using TCP/IP or real DDE.
  33
  34 #include "ddesetup.h"
  35
  36 #if defined(__WXGTK__) || defined(__WXMOTIF__)
  37 #include "mondrian.xpm"
  38 #endif
  39
  40 #include "client.h"
  41
  42 // ----------------------------------------------------------------------------
  43 // wxWin macros
  44 // ----------------------------------------------------------------------------
  45
  46 IMPLEMENT_APP(MyApp)
  47
  48 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  49     EVT_MENU(CLIENT_QUIT, MyFrame::OnExit)
  50     EVT_MENU(CLIENT_EXECUTE, MyFrame::OnExecute)
  51     EVT_MENU(CLIENT_POKE, MyFrame::OnPoke)
  52     EVT_MENU(CLIENT_REQUEST, MyFrame::OnRequest)
  53 END_EVENT_TABLE()
  54
  55 // ----------------------------------------------------------------------------
  56 // globals
  57 // ----------------------------------------------------------------------------
  58
  59 char ipc_buffer[4000];
  60 wxListBox *the_list = NULL;
  61
  62 MyConnection *the_connection = NULL;
  63 MyClient *my_client ;
  64
  65 // ============================================================================
  66 // implementation
  67 // ============================================================================
  68
  69 // ----------------------------------------------------------------------------
  70 // MyApp
  71 // ----------------------------------------------------------------------------
  72
  73 // The `main program' equivalent, creating the windows and returning the
  74 // main frame
  75 bool MyApp::OnInit()
  76 {
  77     wxString server = "4242";
  78 #if wxUSE_DDE_FOR_SAMPLE
  79     wxString hostName = wxGetHostName();
  80 #else
  81     wxString hostName = "localhost";
  82 #endif
  83
  84     if (argc > 1)
  85         server = argv[1];
  86     if (argc > 2)
  87         hostName = argv[2];
  88
  89     // Create a new client
  90     my_client = new MyClient;
  91     the_connection = (MyConnection *)my_client->MakeConnection(hostName, server, "IPC TEST");
  92
  93     while ( !the_connection )
  94     {
  95         if ( wxMessageBox("Failed to make connection to server.\nRetry?",
  96                           "Client Demo Error",
  97                           wxICON_ERROR | wxYES_NO | wxCANCEL ) != wxYES )
  98         {
  99             // no server
 100             return FALSE;
 101         }
 102
 103         the_connection = (MyConnection *)my_client->MakeConnection(hostName, server, "IPC TEST");
 104     }
 105
 106     if (!the_connection->StartAdvise("Item"))
 107         wxMessageBox("StartAdvise failed", "Client Demo Error");
 108
 109     // Create the main frame window
 110     (new MyFrame(NULL, "Client"))->Show(TRUE);
 111
 112     return TRUE;
 113 }
 114
 115 int MyApp::OnExit()
 116 {
 117     if (the_connection)
 118     {
 119         the_connection->Disconnect();
 120     }
 121
 122     // will delete the connection too
 123     delete my_client;
 124
 125     return 0;
 126 }
 127
 128 // Define my frame constructor
 129 MyFrame::MyFrame(wxFrame *frame, const wxString& title)
 130         : wxFrame(frame, -1, title)
 131 {
 132     panel = NULL;
 133
 134     // Give it an icon
 135     SetIcon(wxICON(mondrian));
 136
 137     // Make a menubar
 138     wxMenu *file_menu = new wxMenu;
 139
 140     file_menu->Append(CLIENT_EXECUTE, "Execute");
 141     file_menu->Append(CLIENT_REQUEST, "Request");
 142     file_menu->Append(CLIENT_POKE, "Poke");
 143     file_menu->Append(CLIENT_QUIT, "Quit");
 144
 145     wxMenuBar *menu_bar = new wxMenuBar;
 146
 147     menu_bar->Append(file_menu, "File");
 148
 149     // Associate the menu bar with the frame
 150     SetMenuBar(menu_bar);
 151
 152     // Make a panel
 153     panel = new wxPanel(this);
 154     the_list = new wxListBox(panel, CLIENT_LISTBOX, wxPoint(5, 5));
 155     the_list->Append("Apple");
 156     the_list->Append("Pear");
 157     the_list->Append("Orange");
 158     the_list->Append("Banana");
 159     the_list->Append("Fruit");
 160
 161     panel->Fit();
 162     Fit();
 163 }
 164
 165 void MyFrame::OnExecute(wxCommandEvent& event)
 166 {
 167     if (the_connection)
 168         if (!the_connection->Execute("Hello from the client!"))
 169             wxMessageBox("Execute failed", "Client Demo Error");
 170 }
 171
 172 void MyFrame::OnPoke(wxCommandEvent& event)
 173 {
 174     if (the_connection)
 175         if (!the_connection->Poke("An item", "Some data to poke at the server!"))
 176             wxMessageBox("Poke failed", "Client Demo Error");
 177 }
 178
 179 void MyFrame::OnRequest(wxCommandEvent& event)
 180 {
 181     if (the_connection)
 182     {
 183         char *data = the_connection->Request("An item");
 184         if (data)
 185             wxMessageBox(data, "Client: Request", wxOK);
 186         else
 187             wxMessageBox("Request failed", "Client Demo Error");
 188     }
 189 }
 190
 191 void MyFrame::OnExit(wxCommandEvent& event)
 192 {
 193     Close();
 194 }
 195
 196 wxConnectionBase *MyClient::OnMakeConnection()
 197 {
 198     return new MyConnection;
 199 }
 200
 201 MyConnection::MyConnection()
 202             : wxConnection(ipc_buffer, WXSIZEOF(ipc_buffer))
 203 {
 204 }
 205
 206 MyConnection::~MyConnection()
 207 {
 208     the_connection = NULL;
 209 }
 210
 211 bool MyConnection::OnAdvise(const wxString& topic, const wxString& item, char *data, int size, wxIPCFormat format)
 212 {
 213     if (the_list)
 214     {
 215         int n = the_list->FindString(data);
 216         if (n > -1)
 217             the_list->SetSelection(n);
 218     }
 219     return TRUE;
 220 }
 221
 222 bool MyConnection::OnDisconnect()
 223 {
 224     wxWindow *win = wxTheApp->GetTopWindow();
 225     if ( win )
 226         win->Destroy();
 227
 228     return TRUE;
 229 }
 230