Column width & MVVM

[Erik]

I want to manage the width of GridViewDataColumn in my viewmodel. I can bind GridViewDataColumn.Width to a viewmodel property to set the width in the view. I also want to send the GridViewDataColumn.ActualWidth to the viewmodel, but ActualWidth is read-only so doesn't support binding. For FrameworkElements there is a solution described here: http://stackoverflow.com/questions/1083224/pushing-read-only-gui-properties-back-into-viewmodel but GridViewDataColumn is not a FrameworkElement.

Is there a way to get the ActualWidth to the viewmodel when a user resizes a column? Is there an event that is triggered when a user resizes a column?