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 = wxGetHostName();
  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   if (!the_connection)
  94   {
  95     wxMessageBox("Failed to make connection to server", "Client Demo Error");
  96 #ifdef __WXMSW__
  97 //    extern void wxPrintDDEError();
  98 //    wxPrintDDEError();
  99 #endif
 100     return FALSE;
 101   }
 102   the_connection->StartAdvise("Item");
 103
 104   frame->Show(TRUE);
 105
 106   return TRUE;
 107 }
 108
 109 int MyApp::OnExit()
 110 {
 111     if (my_client)
 112       delete my_client ;
 113
 114     return 0;
 115 }
 116
 117 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 118     EVT_MENU(CLIENT_QUIT, MyFrame::OnExit)
 119     EVT_MENU(CLIENT_EXECUTE, MyFrame::OnExecute)
 120     EVT_MENU(CLIENT_POKE, MyFrame::OnPoke)
 121     EVT_MENU(CLIENT_REQUEST, MyFrame::OnRequest)
 122     EVT_CLOSE(MyFrame::OnCloseWindow)
 123 END_EVENT_TABLE()
 124
 125 // Define my frame constructor
 126 MyFrame::MyFrame(wxFrame *frame, const wxString& title, const wxPoint& pos, const wxSize& size):
 127   wxFrame(frame, -1, title, pos, size)
 128 {
 129     panel = NULL;
 130 }
 131
 132 void MyFrame::OnExecute(wxCommandEvent& event)
 133 {
 134       if (the_connection)
 135         the_connection->Execute("Hello from the client!");
 136 }
 137
 138 void MyFrame::OnPoke(wxCommandEvent& event)
 139 {
 140       if (the_connection)
 141         the_connection->Poke("An item", "Some data to poke at the server!");
 142 }
 143
 144 void MyFrame::OnRequest(wxCommandEvent& event)
 145 {
 146       if (the_connection)
 147       {
 148         char *data = the_connection->Request("An item");
 149         if (data)
 150           wxMessageBox(data, "Client: Request", wxOK);
 151       }
 152 }
 153
 154 void MyFrame::OnExit(wxCommandEvent& event)
 155 {
 156   if (the_connection)
 157     the_connection->Disconnect();
 158
 159   this->Destroy();
 160 }
 161
 162 // Define the behaviour for the frame closing
 163 void MyFrame::OnCloseWindow(wxCloseEvent& event)
 164 {
 165   if (the_connection)
 166   {
 167     the_connection->Disconnect();
 168   }
 169   this->Destroy();
 170 }
 171
 172 MyClient::MyClient(void)
 173 {
 174 }
 175
 176 wxConnectionBase *MyClient::OnMakeConnection(void)
 177 {
 178   return new MyConnection;
 179 }
 180
 181 MyConnection::MyConnection(void):wxConnection(ipc_buffer, 3999)
 182 {
 183 }
 184
 185 MyConnection::~MyConnection(void)
 186 {
 187   the_connection = NULL;
 188 }
 189
 190 bool MyConnection::OnAdvise(const wxString& topic, const wxString& item, char *data, int size, wxIPCFormat format)
 191 {
 192   if (the_list)
 193   {
 194     int n = the_list->FindString(data);
 195     if (n > -1)
 196       the_list->SetSelection(n);
 197   }
 198   return TRUE;
 199 }
 200
 201 bool MyConnection::OnDisconnect()
 202 {
 203     frame->Destroy();
 204
 205     the_connection = NULL;
 206     delete this;
 207
 208     return TRUE;
 209 }
 210