[@dan]
That’s how ZD Soft Screen Recorder works. The initial screen is a capture box (‘the outline of a GUI screen’ you mentioned) and a main panel (the ‘toolbar’ you mentioned) at the lower right corner of screen. This enables you to start a recording quickly by hitting the red dot button on the main panel. To open the settings panel (‘the full GUI’ you wanted), you can click the settings button (the gear button on the main panel).