Display copernicus sentinel 1 space packet headers as a table with gtkmm

I am working on a project to visualize the raw radar data of the Copernicus Sentinel 1 satellite.

The data comes in a binary format with header information. Each row in the following figure contains header information of one "space packet":

This source code parses the header information and renders the data as a table in a GTK TreeView:

 https://github.com/plops/cl-cpp-generator2/blob/b13e3afbb30a5958f8e2a6d45b35523f02d32fed/example/33_copernicus_gtk/source/vis_00_base.cpp

The column titles are quite long. In order to fit the table better on the screen I shorten the strings in the table header. The full column title is displayed as a tooltip.

 

I find it surprisingly difficult to express this in gtkmm.

 

Next I want to plot some of the data. I found a dataset that was acquired in stripmap mode and contains several good point spread functions (ships in water).