text canvas over springboard

I have a springboard for some audio. I need to put some text over it.
The text is fine, the canvas causes the buttons on the springboard not to work. I've tried using the same message port as the springboard, no message port for the canvas, i can get something to happen adding a remotekeypressed with a roImageCanvasEvent, but that doesn't allow to change the buttons on the springboard.

What is the best strategy for this? Why cant you just put some text over without message ports? I dont want to talk or listen to it i just want it to show.

Thanks