aseprite/data/widgets/aseprite_update.xml

<!-- Aseprite -->
<!-- Copyright (c) 2021  Igara Studio S.A. -->
<gui>
  <window id="aseprite_update" text="@.title" minwidth="300" minheight="200">
    <box vertical="true" expansive="true">
      <hbox>
        <slider min="0" max="100" id="progress" cell_align="horizontal" expansive="true" readonly="true" />
      </hbox>
      <hbox expansive="true">
        <view expansive="true" style="workspace_view">
          <listbox id="logitems" />
        </view>
      </hbox>
      <box horizontal="true">
        <box horizontal="true" expansive="true" />
        <box horizontal="true" homogeneous="true">
          <button text="@general.ok" id="ok_button" magnet="true" minwidth="60" />
          <button text="@general.cancel" closewindow="true" />
        </box>
      </box>
    </box>
  </window>
</gui>