Add music

libs/core/control.cpp

@@ -0,0 +1,25 @@
+#include "pxt.h"
+
+namespace control {
+
+/**
+ * Announce that an event happened to registered handlers.
+ * @param src ID of the Component that generated the event
+ * @param value Component specific code indicating the cause of the event.
+ * @param mode optional definition of how the event should be processed after construction.
+ */
+//% weight=21 blockGap=12 blockId="control_raise_event"
+//% block="raise event|from %src|with value value" blockExternalInputs=1
+void raiseEvent(int src, int value) {
+    pxt::raiseEvent(src, value);
+}
+
+/**
+* Allocates the next user notification event
+*/
+//% help=control/allocate-notify-event
+int allocateNotifyEvent() {
+    return pxt::allocateNotifyEvent();
+}
+
+}