The Logging Road design in a Well Logging software

Hi,everyone
Now I am accomplishing a project which is achieving a well logging software using qt.I need to design the logging road.Each logging road have three region (title area,legend area,drawing area),The logging road should have dynamically adding,moving,deleting,draging function .And there are some logging road in one canvas.The logging road is docked together one by one.Each road can move to the place between the other two logging road.In the drawing area of a logging road we can draw some curves.One method I think is to use the QSplitter.Each logging road works as a widget in a QSplitter.But when I set the QSplitter:handlewidth=0,two logging road closed in the QSplitter has a border line overlapped together.Then the overlapping line become thicker.I don't know how to solve this problem.I think this method is also not a good idea to design the logging road.Do someone have good ideas about how to achieve the logging road.
Need help!
Thank you in advance!