Hook proceed button to gallery's event listener

app.py

@@ -76,6 +76,7 @@ def get_selected_index(evt: gr.SelectData):
     """
     Returns the selected image from the object detection output gallery.
     """
+    proceed_button.interactive = evt.index is not None
     return evt.index
 
 
@@ -99,6 +100,7 @@ if __name__ == "__main__":
 
             with gr.Row():
                 yolos_selected = gr.Number(label="Selected Image Index")
+                proceed_button = gr.Button("To Moondream", interactive=False)
 
         with gr.Tab("Inference"):
             with gr.Row():