title: QPSQL driver not loaded Qt
body: <p>I have some trouble when I want to add a database. </p>
  
  <pre><code>    _dataBase = QSqlDatabase::addDatabase("QPSQL");
  </code></pre>
  
  <p>After calling this method I have an error:</p>
  
  <pre><code>QSqlDatabase: QPSQL driver not loaded
  QSqlDatabase: available drivers: QSQLITE QMYSQL QMYSQL3 QODBC QODBC3 QPSQL QPSQL7
  </code></pre>
  
  <p>I include to <code>PATH</code> variable paths to:</p>
  
  <pre><code>PostgreSQL\9.3\bin
  PostgreSQL\9.3\lib
  PostgreSQL\9.3\include
  </code></pre>
  
  <p>Also I copy folder <code>sqldrivers</code> to <code>Debug</code> folder. Also tried to copy dlls drom this folder to <code>Debug</code>. Doesn't work either.</p>