title: How to produce Capital hexadecimal digits with QString::arg() ? [QT]
body: <p>I'm trying to create a QString which is a hexadecimal number with its letter digits in Capitals instead of small caps, how can it be done?  </p>
  
  <pre><code>QString( " %1" ).arg( 15, 1, 16 )
  </code></pre>
  
  <p>yields <code>f</code> and I'd like <code>F</code></p>