Generated UI Layer

What 90_Studio_Export.c owns, how it is regenerated and where product logic must not live.

Studio-managed generated code

Generated contents

—Native LVGL 9 screen and component construction
—Persisted geometry, styles and themes
—Private retained objects, state and transition helpers
—Collision-safe public Runtime SDK implementations for Standard widgets
—Fi object binding to generated 96_FiRuntime presentation state
—Genuine-user event adapters
—Image descriptor declarations and asset registration
—System Runtime presentation and internal callbacks
—Generated feature headers, runtime registration and timers

The authoritative Widget Registry decides which semantic capabilities reach this layer. Export-time feature gating keeps unused widget APIs, sources and dependencies out of the generated project.

Representative generated wiring

LV_IMAGE_DECLARE(fg_upload_three_position_left);

static fg_three_way_input_t mode = {
    .state = FG_THREE_WAY_CENTER,
    .changed_cb = FG_On_Mode_Changed,
};

lv_obj_add_event_cb(button, fg_three_way_input_event_cb,
                    LV_EVENT_CLICKED, &mode);