Open Components Using (Magic xpa 4.x)
This setting lets you determine whether the component will be called from the Cabinet file or from the Project file, as set in the Cabinet File and Project File Name component properties. This setting is relevant only for Studio mode.
When you distribute your application, you will want to distribute your component as a Cabinet file. This is nice, compact, and secure way to distribute the component.
However, while you are creating and testing the component, it is more convenient to work with the actual Project files. This allows you to quickly change the component and see the changes, without re-creating the Cabinet file. Also, if you are using the Project files, you can step through the component in the Debugger.
Available values: Cabinet File, Project
Default: Cabinet File
Change Effective: Immediate
Magic.ini and Command Line Name: OpenComponentsUsing
How Do I Develop an Application Using Components Without the Need to Create a Cabinet File for Each Component?