Would be nice to have an event that fires any time columns in a Multicolumn Listbox (or table, etc.) are resized.
As described here, we can detect pane resize events and do cool things like resize the columns of a fit-to-pane listbox to maintain fixed proportions, or allocate all extra space to the last column. So that's pretty nice.
But what I want to do now is have a listbox with a fixed number of columns, and allow the user to adjust their relative sizes. So when the user moves the column separator, you end up with the same N columns visible (no more, no less), you just change how they are distributed. I would really prefer not to have to do something kludgy like this to accomplish that.
