private void InstallDelegates()
{
m_pDelLock = new External.CURLSH_LOCK_DELEGATE(LockDelegate);
m_pDelUnlock = new External.CURLSH_UNLOCK_DELEGATE(UnlockDelegate);
m_hThis = GCHandle.Alloc(this);
m_ptrThis = (IntPtr)m_hThis;
External.curl_shim_install_share_delegates(m_pShare,
m_ptrThis, m_pDelLock, m_pDelUnlock);
}