AddWatcher
return fWatchingService.AddWatcher(watcher);
bool AddWatcher(BMessenger watcher);
if (clipboard && clipboard->AddWatcher(target))
if (watcher == NULL || !fWatchingService.AddWatcher(watcher)) {
status_t error = fRoster->AddWatcher(this);
if (!fWatchingService.AddWatcher(watcher))
if (!fWatchingService.AddWatcher(watcher)) {
status_t AddWatcher(Watcher* watcher);
return AddWatcher(new(nothrow) Watcher(target));
bool AddWatcher(Watcher *watcher);
bool AddWatcher(const BMessenger &target);