// https://stackoverflow.com/a/1916241/7003797
private void OnKeyPressed(Keys key, int position, int documentId)
{
if (KeyPressed != null)
{
var eventListeners = KeyPressed.GetInvocationList();
for (int index = 0; index < eventListeners.Length; index++)
{
var methodToInvoke = (EventHandler <KeyboardHookEventArgs>)eventListeners[index];
methodToInvoke.BeginInvoke(
this,
new KeyboardHookEventArgs(key, position, documentId),
EndOnKeyPressed,
null
);
}
}
}