media sample

[wxWidgets.git] / samples / ipc / server.cpp

diff --git a/samples/ipc/server.cpp b/samples/ipc/server.cpp
index 0c91c8df457136295b81d0182662f380ab759c18..562f9bb9f2b4acdab4d7713c8ae3a4c1a038eccb 100644 (file)
--- a/samples/ipc/server.cpp
+++ b/samples/ipc/server.cpp
@@ -57,7 +57,6 @@ END_EVENT_TABLE()
 // global variables
 // ----------------------------------------------------------------------------
 
-char ipc_buffer[4000];
 MyConnection *the_connection = NULL;
 
 // ============================================================================
@@ -71,7 +70,7 @@ MyConnection *the_connection = NULL;
 bool MyApp::OnInit()
 {
     // Create the main frame window
-    (new MyFrame(NULL, "Server"))->Show(TRUE);
+    (new MyFrame(NULL, _T("Server")))->Show(true);
 
     // service name (DDE classes) or port number (TCP/IP based classes)
     wxString service = IPC_SERVICE;
@@ -83,7 +82,7 @@ bool MyApp::OnInit()
     m_server = new MyServer;
     m_server->Create(service);
 
-    return TRUE;
+    return true;
 }
 
 int MyApp::OnExit()
@@ -99,9 +98,11 @@ int MyApp::OnExit()
 
 // Define my frame constructor
 MyFrame::MyFrame(wxFrame *frame, const wxString& title)
-       : wxFrame(frame, -1, title, wxDefaultPosition, wxSize(350, 250))
+       : wxFrame(frame, wxID_ANY, title, wxDefaultPosition, wxSize(350, 250))
 {
+#if wxUSE_STATUSBAR
     CreateStatusBar();
+#endif // wxUSE_STATUSBAR
 
     // Give it an icon
     SetIcon(wxICON(mondrian));
@@ -109,22 +110,22 @@ MyFrame::MyFrame(wxFrame *frame, const wxString& title)
     // Make a menubar
     wxMenu *file_menu = new wxMenu;
 
-    file_menu->Append(SERVER_EXIT, "&Quit\tCtrl-Q");
+    file_menu->Append(SERVER_EXIT, _T("&Quit\tCtrl-Q"));
 
     wxMenuBar *menu_bar = new wxMenuBar;
 
-    menu_bar->Append(file_menu, "&File");
+    menu_bar->Append(file_menu, _T("&File"));
 
     // Associate the menu bar with the frame
     SetMenuBar(menu_bar);
 
     // Make a listbox
-    wxListBox *list = new wxListBox(this, SERVER_LISTBOX, wxPoint(5, 5));
-    list->Append("Apple");
-    list->Append("Pear");
-    list->Append("Orange");
-    list->Append("Banana");
-    list->Append("Fruit");
+    wxListBox *list = new wxListBox(this, SERVER_LISTBOX);
+    list->Append(_T("Apple"));
+    list->Append(_T("Pear"));
+    list->Append(_T("Orange"));
+    list->Append(_T("Banana"));
+    list->Append(_T("Fruit"));
 }
 
 // Set the client process's listbox to this item
@@ -134,16 +135,19 @@ void MyFrame::OnListBoxClick(wxCommandEvent& WXUNUSED(event))
     if (listBox)
     {
         wxString value = listBox->GetStringSelection();
+
+        /* Because the_connection only holds one connection, in this sample only
+           one connection can receive advise messages */
         if (the_connection)
         {
-            the_connection->Advise(IPC_ADVISE_NAME, (wxChar *)value.c_str());
+            the_connection->Advise(IPC_ADVISE_NAME, (wxChar*)value.c_str());
         }
     }
 }
 
 void MyFrame::OnExit(wxCommandEvent& WXUNUSED(event))
 {
-    Close(TRUE);
+    Close(true);
 }
 
 // ----------------------------------------------------------------------------
@@ -153,15 +157,23 @@ void MyFrame::OnExit(wxCommandEvent& WXUNUSED(event))
 IPCDialogBox::IPCDialogBox(wxWindow *parent, const wxString& title,
                            const wxPoint& pos, const wxSize& size,
                            MyConnection *connection)
-            : wxDialog(parent, -1, title, pos, size)
+            : wxDialog(parent, wxID_ANY, title, pos, size)
 {
     m_connection = connection;
-    (void)new wxButton(this, SERVER_QUIT_BUTTON, "Quit this connection",
+    (void)new wxButton(this, SERVER_QUIT_BUTTON, _T("Quit this connection"),
                        wxPoint(5, 5));
     Fit();
 }
 
-void IPCDialogBox::OnQuit(wxCommandEvent& event)
+IPCDialogBox::~IPCDialogBox( )
+{
+    // wxWidgets exit code destroys dialog before destroying the connection in
+    // OnExit, so make sure connection won't try to delete the dialog later.
+    if (m_connection)
+        m_connection->dialog = NULL;
+}
+
+void IPCDialogBox::OnQuit(wxCommandEvent& WXUNUSED(event))
 {
     m_connection->Disconnect();
     delete m_connection;
@@ -174,7 +186,7 @@ void IPCDialogBox::OnQuit(wxCommandEvent& event)
 wxConnectionBase *MyServer::OnAcceptConnection(const wxString& topic)
 {
     if ( topic == IPC_TOPIC )
-        return new MyConnection(ipc_buffer, WXSIZEOF(ipc_buffer));
+        return new MyConnection();
 
     // unknown topic
     return NULL;
@@ -184,12 +196,12 @@ wxConnectionBase *MyServer::OnAcceptConnection(const wxString& topic)
 // MyConnection
 // ----------------------------------------------------------------------------
 
-MyConnection::MyConnection(char *buf, int size)
-            : wxConnection(buf, size)
+MyConnection::MyConnection()
+            : wxConnection()
 {
-    dialog = new IPCDialogBox(wxTheApp->GetTopWindow(), "Connection",
-                              wxPoint(100, 100), wxSize(500, 500), this);
-    dialog->Show(TRUE);
+    dialog = new IPCDialogBox(wxTheApp->GetTopWindow(), _T("Connection"),
+                              wxDefaultPosition, wxDefaultSize, this);
+    dialog->Show(true);
     the_connection = this;
 }
 
@@ -197,41 +209,45 @@ MyConnection::~MyConnection()
 {
     if (the_connection)
     {
-        dialog->Destroy();
+        if (dialog)
+        {
+            dialog->m_connection = NULL;
+            dialog->Destroy();
+        }
         the_connection = NULL;
     }
 }
 
 bool MyConnection::OnExecute(const wxString& WXUNUSED(topic),
-                             char *data,
+                             wxChar *data,
                              int WXUNUSED(size),
                              wxIPCFormat WXUNUSED(format))
 {
     wxLogStatus(wxT("Execute command: %s"), data);
-    return TRUE;
+    return true;
 }
 
 bool MyConnection::OnPoke(const wxString& WXUNUSED(topic),
                           const wxString& item,
-                          char *data,
+                          wxChar *data,
                           int WXUNUSED(size),
                           wxIPCFormat WXUNUSED(format))
 {
     wxLogStatus(wxT("Poke command: %s = %s"), item.c_str(), data);
-    return TRUE;
+    return true;
 }
 
-char *MyConnection::OnRequest(const wxString& WXUNUSED(topic),
+wxChar *MyConnection::OnRequest(const wxString& WXUNUSED(topic),
                               const wxString& WXUNUSED(item),
                               int * WXUNUSED(size),
                               wxIPCFormat WXUNUSED(format))
 {
-    return "Here, have your data, client!";
+    return _T("Here, have your data, client!");
 }
 
 bool MyConnection::OnStartAdvise(const wxString& WXUNUSED(topic),
                                  const wxString& WXUNUSED(item))
 {
-    return TRUE;
+    return true;
 }