TFrameStand is a very useful free and open source component to decouple your UI and build very modern and sophisticated user interfaces for mobile apps built with Delphi. You can now preview your stands without having to run the application each time! Simply double-click on the TFrameComponent and a form will popup. You can choose a Stand from the available ones (read from the TStyleBook, if any provided) and test both Show and Hide. Obviously I have provided a test TFrame you can use as a placeholder for your actual TFrame descendant classes.