I think what I need is a way to specify those initial layouts that would give way to a more flexible layout as the ribbon collapses.  What I am getting from your posts is that if I specify any of the xtpButton... styles to get my initial picture as desired, then that style "sticks" to the control and leads to unsatisfactory collapse behavior.  Is there any way to get both worlds?

Try set xtpButtonIconAndCaption style for "Round" button.

 

However, note that the initial layout is different from that in my original post.  I had specified xtpButtonIconAndCaptionBelow to get that precise picture.  It is important to me to be able to do that.  What I need is more control over the collapse process.  Does that capability exist?

 

If not, here's my wish list:  I would prefer it be something static, like an initial state that gets discarded when resizing happens, or a collapse priority, or a series of properties that would apply at different sizes.  Barring that, I could possibly work with some dynamic notifications during the collapse process in which I could add/remove the properties that control the behavior.

 

 

 

Seems you manually set xtpButtonIconAndCaptionBelow style for Extrude, Cut and Resolved buttons - so they can't be collapsed.

Try to not set.

 

 

to this

 

 

when the app window changes by just a few pixels.  All that empty area seems like a big waste of space.  I'd like to have more granular control over the collapse process, and define 3 or 4 variants of "collapse" states to provide a more smooth transition during the resize.  How can I do this?