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     wxString hostName = wxGetHostName();
  79
  80     if (argc > 1)
  81         server = argv[1];
  82     if (argc > 2)
  83         hostName = argv[2];
  84
  85     // Create a new client
  86     my_client = new MyClient;
  87     the_connection = (MyConnection *)my_client->MakeConnection(hostName, server, "IPC TEST");
  88
  89     while ( !the_connection )
  90     {
  91         if ( wxMessageBox("Failed to make connection to server.\nRetry?",
  92                           "Client Demo Error",
  93                           wxICON_ERROR | wxYES_NO | wxCANCEL ) != wxYES )
  94         {
  95             // no server
  96             return FALSE;
  97         }
  98
  99         the_connection = (MyConnection *)my_client->MakeConnection(hostName, server, "IPC TEST");
 100     }
 101
 102     if (!the_connection->StartAdvise("Item"))
 103         wxMessageBox("StartAdvise failed", "Client Demo Error");
 104
 105     // Create the main frame window
 106     (new MyFrame(NULL, "Client"))->Show(TRUE);
 107
 108     return TRUE;
 109 }
 110
 111 int MyApp::OnExit()
 112 {
 113     if (the_connection)
 114     {
 115         the_connection->Disconnect();
 116     }
 117
 118     // will delete the connection too
 119     delete my_client;
 120
 121     return 0;
 122 }
 123
 124 // Define my frame constructor
 125 MyFrame::MyFrame(wxFrame *frame, const wxString& title)
 126         : wxFrame(frame, -1, title)
 127 {
 128     panel = NULL;
 129
 130     // Give it an icon
 131     SetIcon(wxICON(mondrian));
 132
 133     // Make a menubar
 134     wxMenu *file_menu = new wxMenu;
 135
 136     file_menu->Append(CLIENT_EXECUTE, "Execute");
 137     file_menu->Append(CLIENT_REQUEST, "Request");
 138     file_menu->Append(CLIENT_POKE, "Poke");
 139     file_menu->Append(CLIENT_QUIT, "Quit");
 140
 141     wxMenuBar *menu_bar = new wxMenuBar;
 142
 143     menu_bar->Append(file_menu, "File");
 144
 145     // Associate the menu bar with the frame
 146     SetMenuBar(menu_bar);
 147
 148     // Make a panel
 149     panel = new wxPanel(this);
 150     the_list = new wxListBox(panel, CLIENT_LISTBOX, wxPoint(5, 5));
 151     the_list->Append("Apple");
 152     the_list->Append("Pear");
 153     the_list->Append("Orange");
 154     the_list->Append("Banana");
 155     the_list->Append("Fruit");
 156
 157     panel->Fit();
 158     Fit();
 159 }
 160
 161 void MyFrame::OnExecute(wxCommandEvent& event)
 162 {
 163     if (the_connection)
 164         if (!the_connection->Execute("Hello from the client!"))
 165             wxMessageBox("Execute failed", "Client Demo Error");
 166 }
 167
 168 void MyFrame::OnPoke(wxCommandEvent& event)
 169 {
 170     if (the_connection)
 171         if (!the_connection->Poke("An item", "Some data to poke at the server!"))
 172             wxMessageBox("Poke failed", "Client Demo Error");
 173 }
 174
 175 void MyFrame::OnRequest(wxCommandEvent& event)
 176 {
 177     if (the_connection)
 178     {
 179         char *data = the_connection->Request("An item");
 180         if (data)
 181             wxMessageBox(data, "Client: Request", wxOK);
 182         else
 183             wxMessageBox("Request failed", "Client Demo Error");
 184     }
 185 }
 186
 187 void MyFrame::OnExit(wxCommandEvent& event)
 188 {
 189     Close();
 190 }
 191
 192 wxConnectionBase *MyClient::OnMakeConnection()
 193 {
 194     return new MyConnection;
 195 }
 196
 197 MyConnection::MyConnection()
 198             : wxConnection(ipc_buffer, WXSIZEOF(ipc_buffer))
 199 {
 200 }
 201
 202 MyConnection::~MyConnection()
 203 {
 204     the_connection = NULL;
 205 }
 206
 207 bool MyConnection::OnAdvise(const wxString& topic, const wxString& item, char *data, int size, wxIPCFormat format)
 208 {
 209     if (the_list)
 210     {
 211         int n = the_list->FindString(data);
 212         if (n > -1)
 213             the_list->SetSelection(n);
 214     }
 215     return TRUE;
 216 }
 217
 218 bool MyConnection::OnDisconnect()
 219 {
 220     wxWindow *win = wxTheApp->GetTopWindow();
 221     if ( win )
 222         win->Destroy();
 223
 224     return TRUE;
 225 }
 226