An update for Ultra App Kit beta on Steam is now available. This finishes the user interface scaling to support HD, 4K, 8K, and other resolutions. My original plan was to force an application restart if the scale setting was changed, but I found a way to dynamically resize the interface in a manner that gives natural results, so it now supports dynamic rescaling. That is, if the user changes the Windows DPI setting, or if a window is dragged to a monitor with a different DPI setting, the application will receive an event and rescale the interface dynamically.
Below you can see a sample interface scaled at 100% and 150%:
Ultra App Kit can be pre-ordered in our store now. You will receive the finished software when it is complete, and a Steam key now to access the beta: