擅长:python、mysql、java
<p>根据@iTayb,我想到了以下几点:</p>
<pre class="lang-cpp prettyprint-override"><code>// Scale the source to the requested size with
// the KeepAspectRatio as aspectMode & SmoothTransformation as mode
*source = source->scaled(width, height, Qt::KeepAspectRatio, Qt::SmoothTransformation);
target->setPixmap(*source);
</code></pre>