title: How to change IconSize of QToolButton
body: <p>How to change the IconSize of QToolButton.</p>
  
  <pre><code>button1-&gt;setIcon(QIcon("download.jpg"));
  button1-&gt;setFixedSize(100,100);
  </code></pre>
  
  <p>By using above code button size is getting change but icon inside the button is not changing.</p>