On a Windows desktop, it is possible to use Ctrl + mouse scroll wheel (or Ctrl + Alt + mouse scroll wheel) to zoom in and out of an open application, including the Kahua WINUI Desktop Host and the Kahua Webhost.
Due to technical limitations, if you are using the WINUI Desktop Host and you zoom to a level other than 100%, some visuals may not display as expected. You can either return the magnification level to a value of 100% or switch to the Web Host, which uses the default browser zoom.