events.lzx

<canvas>
  <button onclick="vw.setAttribute('width', 200)">Expand Width</button>
  <button x="120" onclick="vw.setAttribute('width', 100)">Reset</button>

  <view id="vw" y="30" width="100" height="100">

    <!-- onwidth is sent anytime width is changed -->
    <handler name="onwidth">
        this.setAttribute('bgcolor', (this.width > 100 ? lz.colors.red : lz.colors.blue));
    </handler>
   </view>
</canvas>