Use C style comments as per Lennart's fetish :p

src/cardwidget.cc

@@ -54,7 +54,7 @@ void CardWidget::prepareMenu() {
     int active_idx = -1;
 
     treeModel->clear();
-    //Fill the ComboBox's Tree Model:
+    /* Fill the ComboBox's Tree Model */
     for (std::map<Glib::ustring, Glib::ustring>::iterator i = profiles.begin(); i != profiles.end(); ++i) {
         Gtk::TreeModel::Row row = *(treeModel->append());
         row[profileModel.name] = i->first;

src/cardwidget.h

@@ -46,7 +46,7 @@ public:
 protected:
   virtual void onProfileChange();
 
-  //Tree model columns:
+  /* Tree model columns */
   class ModelColumns : public Gtk::TreeModel::ColumnRecord
   {
   public:
@@ -60,7 +60,6 @@ protected:
 
   ModelColumns profileModel;
 
-  //Child widgets:
   Gtk::ComboBox *profileList;
   Glib::RefPtr<Gtk::ListStore> treeModel;
 };

src/mainwindow.cc

@@ -143,7 +143,6 @@ void MainWindow::updateCard(const pa_card_info &info) {
         w->profiles.insert(std::pair<Glib::ustring,Glib::ustring>(info.profiles[i].name, info.profiles[i].description));
     }
     w->activeProfile = info.active_profile->name;
-    //w->defaultMenuItem.set_active(w->name == defaultSinkName);
 
     w->updating = false;
 

src/pavucontrol.cc

@@ -371,7 +371,7 @@ void context_state_callback(pa_context *c, void *userdata) {
             }
             pa_operation_unref(o);
 
-            // Keep track of the outstanding callbacks for UI tweaks
+            /* Keep track of the outstanding callbacks for UI tweaks */
             n_outstanding = 0;
 
             if (!(o = pa_context_get_server_info(c, server_info_cb, w))) {