title: Why is CoInitialize an undeclared identifier?
body: <p>I use <code>UniDac</code> component to connect to <code>PostgreSQL</code>. My <code>Query</code> is running in a separate thread. Now when I use <code>CoInitialize</code> in the thread, I receive this compiler error:</p>
  
  <blockquote>
    <p>- [DCC Error] QryThread.pas(41): E2003 Undeclared identifier: 'CoInitialize'</p>
  </blockquote>
  
  <p>Why?</p>