1 files changed, 42 insertions, 0 deletions
diff --git a/src/boost/libs/signals2/example/extended_slot.cpp b/src/boost/libs/signals2/example/extended_slot.cpp
new file mode 100644
index 000000000..40699e53c
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+++ b/src/boost/libs/signals2/example/extended_slot.cpp
@@ -0,0 +1,42 @@
+// Example program for connecting an extended slot,
+// using a signal's connect_extended and extended_slot_type.
+//
+// Copyright Frank Mori Hess 2009.
+//
+// Use, modification and
+// distribution is subject to the Boost Software License, Version
+// 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// For more information, see http://www.boost.org
+
+#include <boost/signals2/signal.hpp>
+#include <iostream>
+#include <string>
+
+namespace bs2 = boost::signals2;
+
+void single_shot_slot(const bs2::connection &conn, const std::string &message)
+{
+  conn.disconnect();
+  std::cout << message;
+}
+
+int main()
+{
+  typedef bs2::signal<void (void)> sig_type;
+  sig_type sig;
+  {
+    sig_type::extended_slot_type hello(&single_shot_slot, _1, "Hello");
+    sig.connect_extended(hello);
+  }
+  sig();  // prints "Hello"
+  {
+    sig_type::extended_slot_type world(&single_shot_slot, _1, ", World!\n");
+    sig.connect_extended(world);
+  }
+  sig();  // only prints ", World!\n" since hello slot has disconnected itself
+  sig();  // prints nothing, world slot has disconnected itself
+
+  return 0;
+}
+