Sandbox

<br /> #include &lt;QApplication&amp;gt;<br /> #include &lt;QPushButton&amp;gt;

int main(int argc, char *argv[])<br /> {<br /> QApplication app(argc, argv);

QPushButton hello(&quot;Hello world!&quot;);<br /> hello.resize(100, 30);

hello.show();<br /> return app.exec&amp;amp;#40;&amp;#41;;<br /> }<br />