For my SDT app I would need a treeview structure similar to “Editable Cells” from gtk4-demo. I was already going to create it, but then I noticed that we always get
(gtk4-demo:2231): Gtk-CRITICAL **: 18:12:25.978: gtk_css_node_insert_after: assertion ‘previous_sibling == NULL || previous_sibling->parent == parent’ failed
when we edit the text field. Seems to be a serious known issue. So should I better use GtkColumnView for GTK4? I would still have to learn about GtkColumnView, and check if it is supported well by the Nim bindings. Unfortunately GtkColumnView is not well supported by a simple example at all, I found two very complex external example programs, which may take me some time to understand and to convert to Nim when possible at all. (https://github.com/taozuhong/GtkColumnViewDemo and https://github.com/ToshioCP/Gtk4-tutorial/blob/main/gfm/sec29.md)
And can GtkColumnView give me a compact design as TreeView has. I would really need a compact one, because my data looks like
Name Num. Style Group L V Ground 0 Fat GND 0 1 Power 1 Thin P 0 1 Signal 2 Thin S 0 1 Remark 3 ANO 0 0 0
with 16 to 64 lines. The two rightmost columns are boolean checkmarks.