private void onStateChange(IntPtr sourceGroup, IntPtr topWeightSource, IntPtr closure)
{
int mKey = closure.ToInt32();
Cookie cookie = mRegistrations[mKey] as Cookie;
if (cookie != null && cookie.Key != 0)
{
MamaSourceStateChangeCallback mCallback = cookie.SourceStateChangeCallback;
if (mCallback != null)
{
mCallback.onStateChanged(this, new MamaSource(topWeightSource));
}
}
}
