/// <summary>
/// Register a callback for events
/// </summary>
/// <param name="eventId">String ID for event</param>
/// <param name="listener">Listener object</param>
public void RegisterCallback(string eventId, IHookListener listener)
{
if(!_callbacks.ContainsKey(eventId))
{
_callbacks[eventId] = new List<IHookListener>();
}
_callbacks[eventId].Add(listener);
}
public void Unregister(IHookListener listener)
{
if (listener == null)
throw new ArgumentNullException("listener");
UnhookWindowsHookEx(listener.HookPointer);
ThrowExceptionIfLastErrorExists();
listener.HookPointer = IntPtr.Zero;
}
private int HandleMessage(int code, IntPtr wparam, IntPtr lparam, IHookListener listener)
{
if (code == WM_HOTKEY)
{
var key = (Keys)wparam.ToInt32();
listener.HandleHookMessage(key);
return 1;
}
return CallNextHook(listener.HookPointer, code, wparam, lparam);
}
public void Register(IHookListener listener)
{
if (listener == null)
throw new ArgumentNullException("listener");
var hookPointer = SetWindowsHookEx(listener.HookId,
new MessageHandler((c, w, l) => HandleMessage(c, w, l, listener)),
IntPtr.Zero,
GetCurrentThreadId());
if (hookPointer == IntPtr.Zero)
ThrowExceptionIfLastErrorExists();
listener.HookPointer = hookPointer;
}
