///     Before terminating, an application must call the UnhookWindowsHookEx function to free system resources

Remember to call UnhookWindowsHookEx using the handle returned by SetWindowsHookEx

///     The hook procedure can be in the state of being called by another thread even after UnhookWindowsHookEx

///     before <see cref="UnhookWindowsHookEx" /> returns.

static extern bool UnhookWindowsHookEx(IntPtr hhk);

Public Shared Function UnhookWindowsHookEx(ByVal hhk As IntPtr) As <MarshalAs(UnmanagedType.Bool)> Boolean

Public Declare Function UnhookWindowsHookEx Lib "user32" _