Thank you for the demo. Is the use of RelativePanel, UserControl and VSM to handle textowerflow actually the way it's meant to be done, or was it just for demoing purposes?
I'm thinking, using a usercontrol with VSM for as itemtemplate seems like a huge price to pay when you just could have used a grid. I would have done something like this where you use a single grid with multiple row and col. definitions: http://pastebin.com/4Qdw1VWa But again - then you'd not demo RelativePanel. It just feels like a lot of unnecessary code to handle text overflow..