I’m trying to make a window layout usable from different windows.

As you can see from image, I’ve got a logo, a left vertical progress bar and two control buttons in the bottom part of the window (plus menu bar and status bar).
Those parts should be always the same in different windows, and play/stop should be interacting run-time with the common parts but also with parts build in the middle of the window (“part in each window different”).
I can’t understand what i should use for creating a standard layout callable from each window where I need it, made in a way were I can replace for each of those windows just the middle part.
Any tips? I probably just need to understand the way to go (sad to be c# wpf newbie)!
You can use a content control and then just switch the content
Master page for regions
This link has what you need. You can put the page templates in a separate file if you will be doing lots of content switching