I'm trying to implement two panels that slide and dock similar to visual studio's Solution Explorer and Properites. I was able to make them slide using splitter/slidingzone/slidingpane with a litlle tab appearing when they are hidden. I want to also be able to dock them side by side by dragging one of them next to the other one. For my search I found that it may be done using Dock but I did not find how to do it. I tried to implement it by it did not work with me and I had to revert back to the splitter code to implement other functionalities. what it did was putting the slidingzone inside the dock/dockzone/dockpane
So I you can provide a example on how to implement it.